Hashimoto Yuichi
| Graduate School of Humanities and Human Sciences Division of Human Sciences Department of Regional Science | Professor |
| Center for Natural Hazards Research | Professor |
Last Updated :2024/12/06
■Researcher basic information
Researchmap personal page
Home Page URL
J-Global ID
Research Keyword
■Career
Committee Memberships
- Apr. 2019 - Present
The Tohoku Geographical Association, Councilor, Society - Oct. 2018 - Present
The Human Geographical Society of Japan, Representative, Society - Oct. 2017 - Present
日本学術会議, 連携会員, Government - Jun. 2016 - Present
北海道, 北海道防災会議地震専門委員, Autonomy - Jul. 2015 - Present
北海道, 「地震防災対策における減災目標策定に関するワーキンググループ」委員, Autonomy - Apr. 2014 - Present
日本地理学会, 代議員, Society - Apr. 2010 - Present
The Hokkaido Geographical Society, General Affairs Committee Chair, Society - Sep. 2009 - Present
国土交通省国土地理院北海道地方測量部, 地理空間情報に関する北海道地区産学官懇談会, Government - Jun. 2000 - Present
北海道地理学会, 庶務委員長, Society - Apr. 2019 - Mar. 2021
The Association of Japanese Geographers Award Candidate Selection Committee, Subcommittee chair, Society - Mar. 2017 - Sep. 2017
日本学術会議, 連携会員（地域研究委員会・地球惑星科学委員会合同 地理教育分科会）, Government - Jun. 2015 - Jun. 2017
特定非営利活動法人Digital北海道研究会, 理事長, Others - Nov. 2016 - Mar. 2017
北海道, 道路管理に関する懇談会委員, Autonomy - Apr. 2015 - Mar. 2016
Hokkaido Regional Agricultural Research Institute, Agricultural Labor Force Investigation Committee, Others - Apr. 2015 - Mar. 2016
Hokkaido, Review Committee on Road Management, Autonomy
■Research activity information
Awards
- Jun. 2024, The Hokkaido Geographical Society, The Best Paper Award of The Hokkaido Geographical Society
A Multi-Agent Simulation of Evacuation Behavior toward Tsunami Shelter Buildings: A Geographical Study Conducted in Central Kushiro, Hokkaido
Hidemi FUKUDA;Yuichi HASHIMOTO - Jun. 2015, Japan Association on Geographical Space, Academic Award
HASHIMOTO Yuichi - Mar. 2011, Hokkaido University, Hokkaido University President's Award for Teaching Excellence
HASHIMOTO Yuichi
Papers
- The Impact of the Earthquake and Wide Area Blackout on Regional Population Spatiotemporal Distributions
Masami ONOZUKA, Yuichi HASHIMOTO
Papers and proceedings of the Geographic Information Systems Association, 33, 1, 4, Oct. 2024, [Last author]
Japanese, Symposium, 46998343 - Analysis of Evacuation Behaviors in unfamiliar area Using GPS
Daisuke SHIOZAKI, Yuichi HASHIMOTO
Proceedings of the General Meeting of the Association of Japanese Geographers, 106, 67, 67, Sep. 2024
Japanese, Symposium, 44557751 - Changes in Evacuation Behavior Caused by Proactive Evacuees in VR Tsunami Evacuation Training
Daisuke SHIOZAKI, Yuichi HASHIMOTO
IPSJ SIG Technical Report, 2024-IS-167, 14, 1, 4, Mar. 2024, [Last author]
Japanese, Symposium - System Development for Tsunami Evacuation Drill Using ICT and Tsunami Inundation Simulation Data
Daisuke Shiozaki, Yuichi Hashimoto
Journal of Disaster Research, 19, 1, 72, 80, Fuji Technology Press Ltd., 01 Feb. 2024, [Peer-reviewed], [Last author]
English, Scientific journal, This study aims to consider the effects and problems of a tsunami evacuation drill support system that visualizes dynamic tsunami data and evacuees’ locations. The system was developed and operated during a tsunami evacuation drill experiment. The location information application transmits evacuees’ locations in real time using the GPS and network functions of a multi-function terminal. The web application visualizes tsunami data and evacuees’ locations with animation on a web map using WebGIS. By operating the system in the tsunami evacuation experiment, the study could immediately evaluate the evacuation drills through real-time visualization of the evacuees’ actions. Feedback, including the results and evaluations of the evacuation drills, was provided to the participants. Before receiving feedback, 50% of the participants positively evaluated the drill results. However, 42.1% of the participants changed their evaluation to negative after receiving feedback. Additionally, by emphasizing the speed of action during evacuation as one of the important factors for quick evacuation, the system helped to alter participants’ disaster prevention awareness. - GIS education in Chiri-Sogo of high school: practice, evaluation, teacher training
Yuichi HASHIMOTO, Hiroshi MITSUHASHI, Takayasu OTSUKA, Ikuru ISHIBASHI, Eri KURIYAMA, Takashi TANAKA, Taizo MORI, Keiji KIMURA, Daisuke SHIOZAKI
E-journal GEO, 18, 2, 442, 445, Dec. 2023, [Lead author]
Japanese, Symposium - Analysis of climbing characteristics of indoor stair walking in a simulated tsunami evacuation building
Hidemi FUKADA, Yuichi HASHIMOTO
Proceedings of the 17th Research Conference of the Japan Society for Risk Management and Disaster Prevention, 75, 76, Nov. 2023
Japanese, Symposium - Situation and Issues in Measures against Tunami Disasters in the Chishima Trench Coastal Municipality - A Case Study of the Citiy of Kushiro, Hokkaido, Japan -
Yusuke OKUNO, Yuichi HASHIMOTO
Papers and proceedings of the Geographic Information Systems Association, 32, D6-02, Oct. 2023, [Last author]
Japanese, Symposium - Changes in Spatial Pattern of Population Distribution in a City after an Earthquake Disaster
Masami ONOZUKA, Yuichi HASHIMOTO
Papers and proceedings of the Geographic Information Systems Association, 32, F5-02, Oct. 2023, [Last author]
Japanese, Symposium - Proposal and evaluation of tsunami disaster drill support system using tablet computer
Hidemi Fukada, Yuichi Hashimoto, Miyuki Oki, Yusuke Okuno
International Journal of Information Technology, 15, 4029, 4039, Springer Science and Business Media LLC, 13 Sep. 2023, [Peer-reviewed]
English, Scientific journal - Spatial Analysis of Tsunami Evacuation Behavior in Non-Ordinary Spaces Using GPS
Daisuke SHIOZAKI, Yuichi HASHIMOTO
IPSJ SIG Technical Report, 2023-IS-165, 15, 1, 6, Aug. 2023, [Last author]
Japanese, Symposium - Estimating the Difficult-to-evacuate Population of Tsunami Disasters assuming Road Surface Conditions and Road Network Disruptions in the Snowy Cold Region: A Study of the Tsunami Inundation Zone due to the Chishima Trench Earthquake
Yuka Kudo, Yuichi Hashimoto
Geographical Studies, 97, 1, 1, 12, Hokkaido Geographical Society, 06 Feb. 2023, [Peer-reviewed], [Last author]
Japanese, Scientific journal - Change in the Difficult-to-evacuate Zone due to updated Tsunami Inundation Assumptions along the Pacific Coast in Hokkaido
Yuichi HASHIMOTO
Papers and proceedings of the Geographic Information Systems Association, 31, B-O2-4, Oct. 2022, [Lead author]
Japanese, Symposium - Analysis of Behaviors in Simulated Group Evacuations Due to Tsunamis Caused by Earthquakes in The Northern Part of The Japan Trench - A Case Study of The City of Tomakomai, Hokkaido, Japan -
Yusuke OKUNO, Yuichi HASHIMOTO
Papers and proceedings of the Geographic Information Systems Association, 31, B-O2-3, Oct. 2022, [Last author]
Japanese, Symposium - Utilization of VR Evacuation Training System using ICT and WebVR technology in geographc education for university
Daisuke SHIOZAKI, Yuichi HASHIMOTO
Papers and proceedings of the Geographic Information Systems Association, 31, B-5-5, Oct. 2022, [Last author]
Japanese, Symposium - A spatial analysis of evacuation from tsunami in Tomokomai city, Hokkaido
Nagomi MITSUI, Yuichi HASHIMOTO
Papers and proceedings of the Geographic Information Systems Association, 31, B-1-6, Oct. 2022, [Last author]
Japanese, Symposium - Spatial Characteristics of Land Use and Tsunami Disaster Risk in Hakodate City
Takeshi KAWAMURA, Yuichi HASHIMOTO
Papers and proceedings of the Geographic Information Systems Association, 31, B-1-5, Oct. 2022, [Last author]
Japanese, Symposium - Changes in Spatiotemporal Pattern of Population Distribution in a City just after an Earthquake Disaster
Masami ONOZUKA, Yuichi HASHIMOTO
Papers and proceedings of the Geographic Information Systems Association, 31, B-1-4, Oct. 2022, [Last author]
Japanese, Symposium - Implementation of disaster prevention education activities for tsunami evacuation in Hokkaido Part 2: Cooperation with Mukawa Municipal Mukawa Junior High School
Shinichi TAKEUCHI, Makoto Tomatsu, Tetsuya KATAOKA, Yuichi HASHIMOTO, Toshio KUSAKARI
Architectural Institute of Japan Hokkaido Branch Research Report, 95, 333, 336, Jun. 2022
Symposium - Blackout and Whiteout
Yuichi HASHIMOTO
Geography, 67, 2, 16, 26, Feb. 2022, [Invited], [Lead author]
Japanese, In book - Land Use Change and Tsunami Disaster Risk in Muroran City
KAWAMURA Takeshi, HASHIMOTO Yuichi
Proceedings of the General Meeting of the Association of Japanese Geographers, 2022a, 97, The Association of Japanese Geographers, 2022
Japanese, １．研究の背景と目的
港湾は国民生活と産業活動を支える重要な物流・生産基盤であり，地理学の重要な研究対象として林（2017）などの多くの研究が蓄積されてきたが，これらの研究において港湾と災害との関係に注目したものは稀である．その中で川村・橋本(2021)は北海道太平洋沿岸の代表的な港湾都市である苫小牧市，室蘭市，釧路市を対象に，日本海溝・千島海溝沿いの巨大地震による建物被害を都市計画基礎調査の建物データを用いて推計し，土地利用変化と津波災害リスクの関係の解明を試みた．しかし，分析単位として1/4地域メッシュ(1辺約250m)を使用し，小地域で整備された建物データをそのままメッシュに変換していることから，分析の精度に課題があった．特に室蘭市については過去の建物データに小地域で整備されたものを用いており，土地利用変化の分析が低い精度に留まっていた．そこで本研究では室蘭市を対象に高精度な分析を実施し，土地利用変化の空間的特徴と津波災害リスクの関係を明らかにすることを目的とする．なお，研究対象地域の概要は図１のとおりである．
２．使用データと研究方法
建物データは1994年から2015年までの都市計画基礎調査を使用し，津波浸水データは2012年と2021年に北海道から公表された津波浸水想定を使用する．都市計画基礎調査は1/10細分メッシュ(1辺約100m)に集約する．また，小地域で整備された建物データの延床面積等の数値をメッシュに面積按分する際に，国土数値情報の土地利用細分メッシュデータで建物用地であるメッシュにのみ配分することで高精度化を図る．このようにメッシュごとに集計した数値を用いて，鉄道駅や港湾からの距離で市内を区分して地域別に集計することで，室蘭市の土地利用変化の空間的特徴を確認する．次に，この結果と津波浸水データを重ね合わせ，建物構造別の津波被害率関数を適用して津波による建物被害面積を算出する．
３．分析結果と結論
室蘭市全体では，1994年から2015年まで延床面積は微増傾向にある．地域別では室蘭駅周辺ではあまり変化が無いが，臨港地区内では大きく増加している．被害面積は室蘭市全体では2001年まで増加し，以降は減少している．地域別では室蘭駅周辺や港湾と鉄道駅のいずれからも離れた地域では減少しているが，臨港地区内では増加している．室蘭市では図2のとおり無被害の地域が室蘭駅や東室蘭駅から離れた内陸部の高台に分布しており，郊外化による津波災害リスク増大は生じていない．一方で臨港地区内部や東室蘭駅周辺での開発は場所によって津波災害リスクの増大につながっている．このように，都市計画基礎調査を用いることで建築構造による被害の程度の差を踏まえて被害面積を算出し，複数の年次間の土地利用変化の空間的特徴と津波災害リスクの関係を明らかにできた． - Spatial Analysis of Tsunami Inundation Zone on the Pacific Coast Region in Hokkaido
Yuichi Hashimoto
Bulletin of the Faculty of Humanities and Human Sciences, Hokkaido University, 165, 129, 166, Dec. 2021, [Lead author]
Japanese, Research institution, 30916583 - Changes in Spatial Patterns of Land Use and Tsunami Disaster Risk of Port Cities
Takeshi KAWAMURA, Yuichi HASHIMOTO
Papers and proceedings of the Geographic Information Systems Association, 30, B30-3-6, Oct. 2021, [Last author]
Japanese, Scientific journal - Utilization of BIM / CIM with GIS and activities of GIS community in Hokkaido
Tatsuya MIYOSHI, Yuichi HASHIMOTO
Papers and proceedings of the Geographic Information Systems Association, 30, C31-3-5, Oct. 2021, [Last author]
Japanese, Scientific journal - Issues for disaster evacuation of childcare facilities in Tomakomai City, Hokkaido
Nagomi MITSUI, Yuichi HASHIMOTO
Papers and proceedings of the Geographic Information Systems Association, 30, B31-2-5, Oct. 2021, [Last author]
Japanese, Scientific journal - Spatial analysis of evacuation behavior using VR evacuation training system in tourist site
Daisuke SHIOZAKI, Yuichi HASHIMOTO
Papers and proceedings of the Geographic Information Systems Association, 30, B31-2-3, Oct. 2021, [Last author]
Japanese, Scientific journal, 30916583 - Intra-urban Population Changes in the Event of Disaster using Mobile Phone Demographics: a Case Study of the 2018 Hokkaido Eastern Iburi Earthquake
Masami ONOZUKA, Yuichi HASHIMOTO
Papers and proceedings of the Geographic Information Systems Association, 30, B31-2-2, Oct. 2021, [Last author]
Japanese, Scientific journal, 30916583 - A spatial analysis of evacuation from tsunami in the coastal area of the Sea of Japan, Hokkaido
Yuka KUDO, Yuichi HASHIMOTO
Papers and proceedings of the Geographic Information Systems Association, 30, B30-3-4, Oct. 2021, [Last author]
Japanese, Scientific journal - Analysis of Group Behaviors in Quasi tsunami Evacuations Focusing on Walking Speed
Yusuke OKUNO, Yuichi HASHIMOTO
Papers and proceedings of the Geographic Information Systems Association, 30, B30-3-3, Oct. 2021, [Last author]
Japanese, Scientific journal, 30916583 - Development of Tsunami Evacuation Simulation Using Agent Model - A Case Study of Vertical Evacuation of Tsunami Shelter Building in Kushiro City -
Hidemi FUKADA, Yuichi HASHIMOTO
Papers and proceedings of the Geographic Information Systems Association, 30, B30-3-1, Oct. 2021, [Last author]
Japanese, Scientific journal, 30916583 - Multi-Agent Simulation of Evacuation Behavior toward Tsunami Shelter Buildings: A Geographical Study Conducted in Central Kushiro, Hokkaido
Hidemi FUKADA, Yuichi HASHIMOTO
Geographical Studies, 96, 2, 7, 18, Aug. 2021, [Peer-reviewed], [Last author]
Japanese, Scientific journal, 30916583 - Resort Development and Landslide Disaster Risk in Niseko Hirafu Area
Daisuke SHIOZAKI, Yuichi HASHIMOTO
Geographical Studies, 96, 1, 1, 6, Hokkaido Geographical Society, 12 May 2021, [Peer-reviewed], [Last author]
Japanese, Scientific journal,本研究はスキーリゾート開発が著しい北海道倶知安町のひらふ地区を対象とし，開発の経緯を施設建設によって概観した後，各施設に関する土砂災害の危険性を空間的に検討することで，スキーリゾート開発と災害リスクとの関係を明らかにした。 そのために建築確認申請計画概要書から作成したデータベースで開発を年代別に分析し，当該地区の土砂災害リスクを国土数値情報の災害関連情報とあわせて検討した。ひらふ地区の開発はバブル崩壊前後と2000 年代後半に拡大した。特に海外からの不動産投資が急増した2000 年代後半からの開発では，スキー場に近接した施設建設の適地が不足したことにより，バブル期の開発に比べ，その開発範囲は河川沿いの急傾斜地にきわめて近い場所まで広がっていた。ここには高級コンドミニアムなど比較的規模の大きい建築物が複数立地しており，近年の観光施設集積地の縁辺部における大型開発が，土砂災害の危険性を高めていた。これらの結果から，対象地域では好景気の時期に開発が進んでいることや，開発の時期が新しいほど土砂災害の危険性が高い場所で施設建設が行われていることが明らかになった。
, 30916583 - Spatial analysis of ski resort development and ownership changes in the Niseko area
Shiozaki Daisuke, Hashimoto Yuichi
Proceedings of the General Meeting of the Association of Japanese Geographers, 2021, 163, 163, The Association of Japanese Geographers, 2021, [Last author]
Japanese, Research society,1．研究目的
観光は国民生活に不可欠なものとされ，観光産業は経済構造を安定的なものとし，地域の経済と文化を活性化させ地域振興に寄与するとも言われ政策の柱となった（観光政策審議会，1995）．2016年には観光先進国を目指してインバウンドツーリズムの強化を図り，2020年には訪日外国人旅行者目標を4000万人，2030年には6000万人とすることが計画されている（観光庁，2019）．
こうした中，観光庁は13地域の観光圏を設定し整備実施を計画しているが，このうち6地域はスキー場が含まれる地域であり，日本の観光の中でもスキーリゾートは重要な観光資源とされている．その観光圏の１つである北海道ニセコ観光圏におけるスキーリゾートは多くの外国人観光客を呼び込み，また現在のCOVID-19による深刻な状況下においても，リゾート施設の新規開業や開発計画が持ち上がるなど，今後も開発が見込まれる地域である．しかしこうした開発によって建築された建物の不動産所有や所有権移転に着目した研究は少ない．
そこで，本研究は北海道虻田郡倶知安町字山田北部地区を対象とし，不動産登記情報をデータベース化し分析することによって，観光地区における建物および不動産所有の実態を明らかにすることを目的とする．
2．研究対象地域及び研究方法
研究対象地域は北海道虻田郡倶知安町字山田，道道343号からグランヒラフスキー場にかけてのエリア（以後ひらふ北部地区と称す）とする．本研究はまず土地利用細分メッシュデータ及び建築確認申請登録簿より取得した建築確認申請データを用いて，ニセコエリアにおける高度経済期以降の開発過程を時系列でみていく．次に不動産登記に記載されている建物情報及び所有者情報，そして権利情報を用いて，不動産及び不動産所有の空間特性を明らかにする．
3．研究結果
ニセコエリアのアンヌプリ山麓は農業的土地利用が中心であったが，スキー場の立地が比較的早いひらふ地区及びアンヌプリスキー場周辺は，1970年代から都市的土地利用が拡大するなどの傾向が見られた．
建築確認申請概要書データから，1980年代後半のバブル経済期に観光開発が活発化したことが明らかとなった．ひらふ地区は別荘などといった小規模開発が，ひらふ南部地区や泉郷，樺山など飛び地的に拡大していった．他方で他のスキー場周辺では大規模資本による大型開発が目立つなど，地区毎の開発の差異が現れた．
2000年代後半になると，ひらふ地区ではオーストラリア資本などによるコンドミニアムの建築といった小規模開発が再び活発化した．しかし，近年では6階以上の高層建築物や専有部分が100を超える規模の大きい建築物の立地が見られるなど，開発の大規模化が進んだ．
こうした不動産の細分化が進む中，不動産取引にも変化が現れ始めた．2000年代後半にはオーストラリア資本による直接の不動産登記登録が目立ち，また専有部分もオーストラリア資本が権利を持つといった傾向が見られたが，近年では国内在住の企業が建物登記を行い，完成した建物の専有部分権利を中国やシンガポールといったアジア資本と売買する傾向が強くなった．その結果，特に中国の権利者がひらふ北部地区において多くなった（図1，図2）．また不動産権利の売買が活発に行われており，より大規模な開発が見られるようになったが，開発地は地形制約限界にまで達しており，土砂災害に対する脆弱性が増している等の課題が明らかとなった．
- Estimation of Evacuation Behavior after the Earthquake with Electric Power Failures by Using Spatial Statistics of Mobile Phones
Masami ONOZUKA, Yuichi HASHIMOTO
Papers and proceedings of the Geographic Information Systems Association, 29, P-45, Oct. 2020, [Last author]
Japanese, Symposium, 30916583 - An Analysis of Trajectory Data for Group Evacuation Behavior from Tsunami Disaster
Yusuke OKUNO, Daisuke SHIOZAKI, Yuichi HASHIMOTO
Papers and proceedings of the Geographic Information Systems Association, 29, B24-1-4, Oct. 2020, [Last author]
Japanese, Symposium - Spatial analysis of real estate in ski resort area using the real estate registration data
Daisuke SHIOZAKI, Yuichi HASHIMOTO
Papers and proceedings of the Geographic Information Systems Association, 29, D24-3-5, Oct. 2020, [Last author]
Japanese, Symposium, 30916583 - GIS community activities in Hokkaido during the COVID-19 infection period
Tatsuya MIYOSHI, Yuichi HASHIMOTO
Papers and proceedings of the Geographic Information Systems Association, 29, B25-1-3, Oct. 2020, [Last author]
Japanese, Symposium, 30916583 - A spatial analysis of difficult-to-evacuate area in a heavy snow and cold city on the complex humanitarian emergencies -A case study of Rumoi city, Hokkaido-
Yuka KUDO, Yuichi HASHIMOTO
Papers and proceedings of the Geographic Information Systems Association, 29, B24-2-3, Oct. 2020, [Last author]
Japanese, Symposium, 30916583 - Development of Tsunami Maximum Risk Assessment Method andEmpirical Deployment of Disaster Prevention Measures
Makoto Tomatsu, Takeshi Kawamura, Takuya Tsutsumi, Genki Iizumi, Akira Ishii, Gentaro Kawakami, Hajime Sato, Yuichi Hashimoto, Daisuke Shiozaki, Norio Tanaka
Research Report (Northern Regional Building Research Institute), 403, 1, 17, Mar. 2020
Japanese, Research society - Spatial analysis of tsunami evacuation behavior using VR
Daisuke SHIOZAKI, Yuichi HASHIMOTO
IPSJ SIG Technical Report, 2020-IS-151, 6, 1, 6, Feb. 2020, [Last author]
Japanese, Symposium - Spatial analysis of real estate in the northern Niseko-Hirafu using the real property registration data
Shiozaki Daisuke, Hashimoto Yuichi
Proceedings of the General Meeting of the Association of Japanese Geographers, 2020, 301, 301, The Association of Japanese Geographers, 2020
Japanese,1．研究目的
高度経済成長期以降，日本では大規模リゾート施設や大型保養地が各地で開発され，北海道や東北，本州内陸部といった積雪地域ではスキー場を中心としたスキーリゾート開発が進められた．しかしバブル経済の崩壊とともに，スキーリゾート地域は長らく低迷の時代を迎えた（呉羽，2017）．しかし，2000年代後半から一部スキー場は外国人からの注目を集め，スキー場周辺の再開発が見られるようになった．北海道虻田郡倶知安町に位置するニセコグランヒラフスキー場もその一つである．グランヒラフスキー場が位置する倶知安町字山田はバブル経済とともに開発が活発化し，また開発エリアも泉郷や樺山といった隣接エリアにまで拡大していった．しかしバブル経済の崩壊とともに開発行為が停滞し，2000年代後半から外国人による開発が急拡大した（塩崎・橋本，2017）．
現在では6階以上の高層階を有する分譲型の建物が建築されているが，こうした不動産の実態は未だ不明である．そこで本研究は不動産登記情報をもとに，ニセコヒラフ地区における建物および不動産所有の実態を明らかにし，空間特性および課題を議論することを目的とする．
2．研究対象地域及び研究方法
研究対象地域は北海道虻田郡倶知安町字山田，道道343号からグランヒラフスキー場にかけてのエリア（以後ヒラフ北部地区と称す）とする．本研究はまず，不動産の登記情報723件をデータベース化する．登記情報を収集するにあたっては，ZENRIN住宅地図の2017年度版に記載されているヒラフ北部地区の建物を対象とした．次に登記に記載されてある建物情報及び所有者情報から，不動産及び不動産所有の実態を明らかにする．さらに建物の立地及び建物情報，所有者情報からニセコヒラフ地区における現在の不動産及び不動産所有の空間特性を議論する．最後に当該地区の不動産と災害リスクについて考察し、これらの分析結果を総合し本研究はニセコエリアにおける地域開発を議論する。
3．研究結果
まず登記情報を集計した結果，ヒラフ北部地区の専有部種類は12種類登録されており，最も多いのが「居宅」で451件であった．次いで多いのが「ホテル」で114件であり，「物置」47件，「店舗」27件と続いた．建物毎に集計すると，建物内に50件以上の「居宅」を有する建物は４棟存在した．これらの建物は一般的な宿泊予約サイトにも掲載されており，「居宅」で登録された部屋が宿泊施設としても利用されている．
次に各専有部の所有者の変化を見ると，表題部に記載された所有者の所在が，倶知安町で236件と最も多かった．次に札幌市が213件と多く，東京都が85件，オーストラリアが85件，神奈川県が49件，マレーシアが４件であった．しかし売買などを経た最終的な所有者は，最も多いのが中華人民共和国で210件，次にオーストラリアが101件，シンガポールが82件とアジア圏の所有者が増加している一方で，倶知安町が32件，札幌市が19件と激減している．これにより北海道のディベロッパーがヒラフ北部地区を開発し，専有部をアジア圏の富裕層に販売している実態が明らかとなった．
各建物の立地時期を年代別に分けて表示すると，多くの建物が2010年代に開発されたものということが見てわかる（図1）．また西側から南側にかけて沢が存在するが，この沢に沿う形で建物が並んでいる様子もわかる．もともとヒラフスキー場は沢に挟まれた狭矮な土地であり，地形的制約から開発が拡大しにくいため，飛び地的に泉郷や樺山エリアが開発されてきた．しかし近年ではこの沢付近でも開発が行われる傾向があり，そうして開発された建物を多くの外国人が所有する実態が明らかとなった．
こうした地形は災害リスクも伴う．ヒラフ地区は沢地形のような急傾斜地が多いため，土砂災害エリアが設定されており，図1で示された多くの建物がこのエリア内に存在する．またこれらの建物には外国人オーナーはもちろん，宿泊施設としても多くの外国人が来る．こうした人たちに災害情報をどのように伝達するのか，また災害発生時にどのようにアプローチするべきなのかを検討する必要があると考えられる．
- "Chiri Sogo" and the utilization of GIS
AKIMOTO Hiroaki, HASHIMOTO Yuichi, KAWAI Toyoaki
学術の動向, 24, 11, 18, 22, Nov. 2019, [Invited]
Japanese, Research society - Special analysis of the building location situation and the evacuation possibility from tsunamis of a port city in a cold and heavy snow area
Takeshi KAWAMURA, Yuichi HASHIMOTO, Makoto TOMATSU, Shinichi TAKEUCHI
Proceedings of the Geographic Information System Association, 28, D-5-2, Oct. 2019
Japanese, Symposium - Estimation of Areas People Live with Shopping Difficulty in Japan
ONOZUKA Masami, HASHIMOTO Yuichi
Proceedings of the Geographic Information System Association, 28, D-1-3, Oct. 2019, [Last author]
Japanese, Symposium - Development of GIS community in Hokkaido
Tatsuya MIYOSHI, Yuichi HASHIMOTO
Proceedings of the Geographic Information System Association, 28, E-1-1, Oct. 2019, [Last author]
Japanese, Symposium - Analysis of Group Evacuation Behaviors for Tsunamis and Other Disasters Arising from Tsunamis and Landslides - A Case Study for Wakkanai City in Hokkaido, Japan –
Yusuke OKUNO, Daisuke SHIOZAKI, Yuichi HASHIMOTO
Proceedings of the Geographic Information System Association, 28, D-5-2, Oct. 2019, [Last author]
Japanese, Symposium - Development and Utilization of the Tsunami Evacuation Visualization System
Yuichi HASHIMOTO, Daisuke SHIOZAKI
Proceedings of the Geographic Information System Association, 28, D-5-4, Oct. 2019, [Lead author]
Japanese, Symposium - The difficulties in accessing grocery stores and the role of mobile sales vehicles in northern Hokkaido
Onozuka Masami, Hashimoto Yuichi
Proceedings of the General Meeting of the Association of Japanese Geographers, 2019a, 96, The Association of Japanese Geographers, 2019
Japanese, 本研究は、北海道北部を事例に2015年国勢調査と2014年商業統計の2分の1メッシュ統計を用いて食料店への近接性から見た対象地域の全国における位置づけを明らかにした。調査の結果、北海道北部の一部地域において移動販売車による買い物が日常的に行なわれおり、移動販売車が利用者の住宅を週に1回から3回程度訪問することで、食料品店への近接性の低さを補完していることが明らかになった。 - The change of facilities location in a tsunami inundation area of a port city
KAWAMURA Takeshi, HASHIMOTO Yuichi, TOMATSU Makoto, TAKEUCHI Shinichi
Proceedings of the General Meeting of the Association of Japanese Geographers, 2019a, 56, The Association of Japanese Geographers, 2019
Japanese, １．研究の背景と目的
港湾および港湾都市の内部構造を取り扱った研究として，酒井（2002）は釧路港における港湾機能の郊外移転と周辺の再開発の状況を明らかにし，その要因として埠頭の専門化等の港湾側の要因の他，背後圏の産業構造や輸送手段の変化を挙げている．
このような港湾都市の変化と災害の関係について，川村・橋本（2017）は積雪寒冷地の港湾都市である苫小牧市を対象に建築物の立地状況と津波浸水想定の分析を行い，港湾周辺の工場立地や住宅の郊外化が特に冬季の津波災害リスクの増大に影響を与えている事を明らかにした．
そこで本研究は，北海道東部の中心都市であり津波災害の発生が想定される釧路市のうち，阿寒町・音別町と合併する前の旧釧路市域を対象に，港湾や背後地の都市で想定される津波被害の解明に向け，津波浸水想定地域内の都市や港湾の開発過程を明らかにする．
２．使用データと研究方法
施設立地の変化をみるため，建築物は「都市計画基礎調査」，港湾設備は「港湾計画図」を使用する．建築物や港湾設備の都市の中心部や海岸からの近接性，建築・設置年代ごとの立地状況等から，釧路市・釧路港の開発過程を概観する．次に，これらの結果と「津波遡上データ」との重ね合わせにより，津波浸水想定地域内の建築物や港湾設備の立地状況とその変化を明らかにする．
３．分析結果と結論
歴史的に釧路市街は市域の東部から次第に西部に拡大し，また港湾も東港・西港の順に整備された．併せて西港周辺で工場や倉庫の集積がみられ，津波浸水想定地域内で建築物や港湾設備の立地が進展した．他方，釧路駅周辺の中心市街地においては津波からの避難に活用できる高層・堅牢な建物の立地が進んでいる．
釧路川以西の地域は大部分が津波浸水想定地域となっているが，以上のような開発の結果，中心市街地周辺は津波避難に活用できる建築物が多く立地する一方で，西港周辺等の郊外ではそのような建築物が少ない状況にあることが明らかとなった．
参考文献
酒井多加志 2002．釧路港における港湾空間の発達過程．地学雑誌，111（1）, 100-117
川村 壮，橋本雄一 2017．津波浸水の時間経過を考慮した建物ごとの避難可能性の時空間分析−北海道苫小牧市を事例として−．地理情報システム学会講演論文集，26，CD-ROM - Development of a pseudo tsunami evacuation drill system using WebVR
Daisuke SHIOZAKI, Yuichi HASHIMOTO
IPSJ SIG Technical Report, 2018-IS-146, 4, 1, 6, Dec. 2018, [Last author]
Japanese, Symposium - A spatial analysis about difficult-to-evacuate area of tsunami disaster in a heavy snow and cold city: A case of Kushiro city, Hokkaido
NAITO Takehiro, HASHIMOTO Yuichi
Proceedings of the Geographic Information System Association, 27, B-5-3, Oct. 2018, [Last author]
Japanese, Symposium - Analysis of Quasi Evacuation of Groups in Tsunamis Using GNSS - A Case Study for Kushiro City and Akkeshi Town in Hokkaido, Japan -
OKUNO Yusuke, SHIOZAKI Daisuke, HASHIMOTO Yuichi
Proceedings of the Geographic Information System Association, 27, B-5-5, Oct. 2018, [Last author]
Japanese, Symposium - Utilization of VR Tsunami Evacuation System using ICT and WebVR technology
SHIOZAKI Daisuke, HASHIMOTO Yuichi
Proceedings of the Geographic Information System Association, 27, B-5-4, Oct. 2018, [Last author]
Japanese, Symposium - Utilization of pseudo evacuation system considering the time evolution of tsunami
Daisuke SHIOZAKI, Yuichi HASHIMOTO
IPSJ SIG Technical Report, 2018-IS-145, 4, 1, 6, Sep. 2018, [Last author]
Japanese, Symposium - ＜特集 北海道 暮らしと産業のいま＞津波防災の自治体・住民の対応
橋本 雄一
地理, 63, 8, 60, 68, Aug. 2018, [Invited]
Japanese, Scientific journal - Visualization and information sharing of real-time tsunami simulation using Web applications
Daisuke SHIOZAKI, Yuichi HASHIMOTO, Yuichiro, TANIOKA
IPSJ SIG Technical Report, 2018-IS-143, 6, 1, 6, Mar. 2018
Japanese, Symposium - Development system for evacuation drills using ICT and WebGIS
Shiozaki Daisuke, Hashimoto Yuichi
Proceedings of the General Meeting of the Association of Japanese Geographers, 2018, 143, 143, The Association of Japanese Geographers, 2018
Japanese, 本研究は避難訓練時の移動軌跡データをリアルタイムで収集し、災害情報と合わせた可視化を行う避難訓練システムを開発することを目的とし、その利活用法の検討を行う。研究方法は、まず避難訓練参加者の多機能端末にインストールする位置情報収集アプリと、位置情報及び災害情報を格納し可視化するWebアプリケーションからなる避難訓練システムを開発する。大学生39人を対象とし、疑似津波集団避難訓練を行う。訓練後に津波浸水データと移動軌跡データを利用した振り返り学習を行い、システム運用結果及び事前事後それぞれのアンケート結果から、システムの利活用法の検討を行う。研究対象地域は北海道釧路市とした。釧路市は市街地の大部分が津波浸水エリアに指定されており、また浸水開始までの時間が35分と短いことが特徴として挙げられる。
システムを運用した結果、位置情報の収集及び可視化に関しては概ね良好であった。位置情報を正確に測位するまでの時間には、端末ごとにタイムラグが生じたものの、実験開始時には誤差5メートル程度で収集でき、リアルタイムでサーバーに格納された。避難訓練者に対するフィードバック学習では、事前に格納されていた津波浸水データと合わせて可視化し、その結果を訓練参加者に提示することができ、参加者の訓練結果に対する意識を変化させるなどの効果があることが明らかとなった。 - Issues of snow removal vehicle position information system using ICT in local governments
Daisuke SHIOZAKI, Yuichi HASHIMOTO
IPSJ SIG Technical Report, 2016-IS-138, 12, 1, 6, Dec. 2017, [Last author]
Japanese, Symposium - Time Development Visualization of Tsunami using Open Source Library
SHIOZAKI Daisuke, HASHIMOTO Yuichi
Papers and proceedings of the Geographic Information Systems Association, 26, B-6-2, Oct. 2017, [Last author]
Japanese, Symposium - An Analysis of Trajectory Data for Quasi Group Evacuation from Tsunami Disaster in Tourist City
Yusuke OKUNO, Daisuke SHIOZAKI, Yuichi HASHIMOTO
Papers and proceedings of the Geographic Information Systems Association, 26, B-4-1, Oct. 2017, [Last author]
Japanese, Symposium - Simulating behavior during evacuation, including ascending stairs in a building serving as a tsunami shelterSimulating behavior during evacuation, including ascending stairs in a building serving as a tsunami shelter
Hidemi FUKADA, Yuichi HASHIMOTO, Miyuki OKI
Papers and proceedings of the Geographic Information Systems Association, 26, B-4-2, Oct. 2017
Japanese, Research institution - Visualization and utilization of time evolution related to tsunami inundation by open source library
Daisuke SHIOZAKI, Yuichi HASHIMOTO
IPSJ SIG Technical Report, 2017-IS-141, 10, 1, 6, Aug. 2017, [Last author]
Japanese, Symposium - A spatial analysis on building location and evacuation behavior from a tsunami of port city in the cold and heavy snow area
KAWAMURA Takeshi, HASHIMOTO Yuichi
Proceedings of the General Meeting of the Association of Japanese Geographers, 2017, 100150, 100150, The Association of Japanese Geographers, 2017
Japanese, 本研究は，建物立地状況と津波到達範囲に加え，津波到達時間と避難行動を分析に加え，避難可能性の面から苫小牧市における津波災害リスクを明らかにすることを目的とする．研究方法としては，まず都市計画基礎調査や各種人口データ等により苫小牧市の都市構造を概観する．続いて，津波の到達時間を考慮した避難行動分析を行い，津波到達範囲内に立地する建物から避難可能かどうか検討することにより，津波災害リスクを明らかにする．最後に，避難行動分析と都市構造分析の結果を統合し，都市構造が津波災害リスクに与える影響について考察を行う．結果，港湾周辺地域の都市化や，郊外型の住宅や商業の立地等の都市構造の変容が津波災害リスクを高める要因となっている． - A Survey of Geographical Studies in Japan, 2015: Mathematical / Metric / Geographic Information
Yuichi HASHIMOTO
Japanese Journal of Human Geography, 68, 3, 317, 320, The Human Geographical Society of Japan, Oct. 2016, [Invited], [Lead author]
Japanese, Scientific journal - An Analysis of Trajectory Data for Group Evacuation Behavior from Tsunami Disaster using GNSS
Yusuke OKUNO, Daisuke SHIMOZAKI, Yuichi HASHIMOTO
Papers and proceedings of the Geographic Information Systems Association, 25, C-3-5, Oct. 2016, [Last author]
Japanese, Symposium - Evaluation and Subject of the Snowplow Positioning System using ICT in Niseko Town
Daisuke SHIAZAKI, Yuichi HASHIMOTO
Papers and proceedings of the Geographic Information Systems Association, 25, D-2-3, Oct. 2016, [Last author]
Japanese, Symposium - 津波避難における個人行動シミュレーション分析の試み
深田 秀実, 橋本 雄一, 沖 観行
日本災害情報学会第18回学会大会予稿集, A5-3, 46, 47, Oct. 2016
Japanese, Symposium - Let's strengthen regional disaster prevention capabilities by utilizing open data and GIS !
Yuichi HASHIMOTO
The journal of survey, 33, 3, 4, 5, Mar. 2016, [Lead author]
Japanese, Research society - A geographical study of the development in the Niseko area using the application of building confirmation
SHIOZAKI DAISUKE, HASHIMOTO YUICHI
Proceedings of the General Meeting of the Association of Japanese Geographers, 2016, 100291, 100291, The Association of Japanese Geographers, 2016
1．研究目的
日本は高度経済成長期以降、地方においては大型保養地やゴルフ場などといったリゾート施設と一体となった開発が進められた。そうした中で本州内陸部や東北地方、北海道といった積雪地域においてはスキーリゾート開発が積極的に進められてきた。しかしバブル崩壊以降、日本は長期間の不況期に陥り、その間にスキー観光の停滞、衰退が進んだことが指摘されている（呉羽，2009）。こうした状況の中、北海道内でも有数の大型スキー場が複数立地する北海道ニセコエリアにおいては、2000年以降外国人観光客、いわゆるインバウンドの増加が顕著になったことが明らかとなった（市岡ほか，2009）。しかし、ニセコエリアを対象とする研究では、この外国人観光客が増加を始めた2000年以降の研究が目立ち、その対象地域も特に開発の多い倶知安町字山田に着目した研究が多く、ニセコエリア全体の開発に関する研究は少ない。そこで本研究は建築確認申請データを用いてニセコエリアにおける開発の時空間構造を明らかにすることを目的とする。
2．研究方法及び資料
本研究の対象地域は北海道虻田郡倶知安町及びニセコ町である。本研究を行うにあたって、1995年から2015年における倶知安町及びニセコ町の建築確認申請建築計画概要書に記載されている、新規建築計画2,251件をデータベース化する。このデータベースを用いて新規建築の件数及び面積から開発の経年変化を分析する。次にニセコエリアにおける新規建築の分布変化をみることにより、ニセコエリアにおける開発の動向を分析する。最後に、これらの分析結果を総合し、ニセコエリアにおける開発の時空間構造を考察する。
3．研究結果
(1)ニセコエリア全体の開発は大きく3つの期間に区分することができた。まず1995年から2004年にかけては総件数が増加と減少を繰り返しながらも、全体としては減少傾向にある期間である。その間に敷地・建築・延べ面積に関しても値を上下させながら、2004年には低い水準であった。次に2005年から2008年にかけて、総件数は増加傾向にあり、2008年には対象とした21年間で最も件数が多かった。最後に2009年以降、総件数は大きく減少し、2012年には逆に最も値が低くなった。 (2)地区別に見た場合、先に区分した2004年以前では、倶知安町市街地、次いでニセコ町市街地の開発件数及び開発面積の値が大きかった。しかし2004年には倶知安町ひらふ地区の開発件数及び面積がニセコ町市街地と逆転し、2006年には倶知安町市街地を抜いて最も開発が多い地区となった。2009年以降件数においては、倶知安町市街地、ひらふ地区、ニセコ町市街地が多いものの、開発面積では花園地区やビレッジ地区などで突出した値を示すなど、開発が広範囲に広がっていることが明らかとなった。 (3)建物階が地上6階以上の高層階を有する建築物は24棟あり、内23棟がひらふ地区に集中した。また大型商店といった大規模低層建物は倶知安町市街地に多く見られた。 (4)建築主の所在に着目したところ、1995年以降始めて国外在住の建築主が現れたのは2004年であった。その後2008年までオーストラリア在住の建築主による開発が増え、遅れてシンガポールやマレーシア、中国といった東アジア在住の建築主による開発が増加した。
4．結論
以上のことから、1995年以降は国内在住の個人や企業といった建築主による開発が、ニセコエリアの開発を占めており、また開発の中心も倶知安町やニセコ町の中心市街地であった。2004年以降は外国人による開発が始まったことにより、その構造が大きく変化した。特にひらふ地区は外国人建築主による開発が進み、土地の高度利用が図られるようになった。しかし2008年以降、特にオーストラリア在住の建築主による開発が減少したことにより、ひらふ地区の開発が停滞、加えてそれまでひらふ地区に集中していたリゾート開発が、花園やビレッジ地区、アンヌプリ地区に流れたと考えられる。 - Tsunami Group Evacuations of Nursery Schools in Cold, Snowy Areas : Case Study of Licensed Nursery Schools in Kushiro, Hokkaido
Ryunosuke MOGAMI, Yuichi HASHIMOTO
Geographical Review of Japan Series A, 88, 6, 571, 590, 日本地理学会 ; 2009-, Nov. 2015, [Peer-reviewed], [Last author]
Japanese, Scientific journal - Experiment with Group Evacuation from Tsunami Disaster using GNSS and Analysis of Trajectory Data
Yusuke OKUNO, Daisuke SHIOZAKI, Yuichi HASHIMOTO
Papers and proceedings of the Geographic Information Systems Association, 24, E-7-2, Oct. 2015, [Last author]
Japanese, Symposium - Development and Application of the Snowplow Positioning System using ICT and WebGIS
Daisuke SHIOZAKI, Yuichi HASHIMOTO
Papers and proceedings of the Geographic Information Systems Association, 24, D-6-5, Oct. 2015, [Last author]
Japanese, Symposium - Spatial analysis of tsunami disaster risk of port city in cold and heavy snow area using city planning basic survey data
Takeshi KAWAMURA, Yuichi HASHIMOTO
Papers and proceedings of the Geographic Information Systems Association, 24, E-7-1, Oct. 2015, [Last author]
Japanese, Symposium - Spatial analysis using of population census mesh data and fire station location data
Tatsuya MIYOSHI, Yuichi HASHIMOTO
Papers and proceedings of the Geographic Information Systems Association, 24, C-6-1, Oct. 2015, [Last author]
Japanese, Symposium - A Geographical Study of Ski Resort Development, in Niseko Area, Hokkaido
SHIOZAKI DAISUKE, HASHIMOTO YUICHI
Proceedings of the General Meeting of the Association of Japanese Geographers, 2015, 92, The Association of Japanese Geographers, Sep. 2015, [Last author]
Japanese, Symposium, 1．研究目的
日本の積雪寒冷地における代表的な地域開発としてスキーリゾート開発があげられるが、バブル期以降のスキー観光の停滞、衰退が著しいことが指摘されている（呉羽，2009）。こうした状況の中、北海道ニセコ地域では外国人観光客の取り込みを図り、特に北海道ニセコひらふ地区においては外国人向けコンドミニアムの建築など開発が盛んな地域として注目され、小澤ほか（2011）や呉羽（2014）など多くの知見が得られてきた。しかし、これまでのニセコ地域を対象とする研究では、特に開発が盛んであるひらふ地区に着目した研究が多く、ニセコ地域全体の開発に関する蓄積は少ない。そこで本研究は建築計画概要書データを用いてニセコ地域における開発の変化を明らかにすることを目的とする。
2．研究方法及び資料
本研究の対象地域は北海道虻田郡倶知安町及びニセコ町である。本研究を行うにあたって、倶知安町及びニセコ町の建築確認申請概要書に記載されている新規建築計画680件の建築確認申請概要書をデータベース化する。このデータベースを用いて新規建築の件数及び面積から開発行動の経年変化を分析し、ニセコ地域全域の開発の実態を明らかにする。次にニセコ地域における新規建築の分布変化をみることにより、ニセコ地域における開発の動向を分析する。最後にこれらの分析結果を総合し、本研究は積雪寒冷地におけるリゾート地域における開発の時系列変化を考察する。
3．研究結果
（1）ニセコ地域の新規建築の件数及び面積の時系列変化をみることにより、地方地域の開発行動が景気の影響を受けて変化していることが明らかとなった。2006年以降、ニセコ地域全域の新規建築確認申請件数は119件から174件まで増加した。しかし2009年には107件と2006年の件数を下回った。これはリーマンショック後の世界的な金融危機の影響が表れていると考えられる。
（2）2006年から2010年までのニセコ地域の新規建築物の分布変化をみると、2006年には倶知安町ひらふ地区に開発が集中しており、2008年には樺山地区が新たに開発されるなど開発エリアの拡大がみられた（図1）。また2009年にニセコ町字曽我に大規模な開発計画が存在したが、未だ着工はされていない。ニセコ町アンヌプリスキー場周辺では温泉資源が有効活用されており、より高付加価値を求めた企業がニセコ町において開発計画を立てたが、景気の悪化に伴い計画が中断したと考えられる。
（3）新規建築の建築主に着目してみると、日本以外では特にオーストラリアと中国香港の建築主が多く、そのほとんどがひらふ地区で開発を行うという動向が明らかとなった。またひらふ地区では企業と個人の双方が開発を進めていたが、樺山地区やニセコ町では企業による開発が目立った。これはヒラフ地区がすでに開発され土地も細分化されており、企業がより大きい開発地の一括取得を目指した結果であると考えられる。 - An Analysis of Trajectory Data for Quasi Tsunami Evacuation in a Heavy Snow and Cold Area
Yusuke OKUNO, Yuichi HASHIMOTO
Theory and Applications of GIS, 23, 1, 11, 20, Geographic Information Systems Association of Japan, 30 Jun. 2015, [Peer-reviewed], [Last author]
Japanese, Scientific journal - Tsunami group evacuation of nursery schools in snowy cold area.
MOGAMI Ryunosuke, HASHIMOTO Yuichi
Proceedings of the General Meeting of the Association of Japanese Geographers, 2015, 100052, 100052, The Association of Japanese Geographers, 2015
1.目的と方法 本研究は，積雪寒冷地における保育施設の津波集団避難の対策と課題や自治体の災害対策支援について検討を行う． 対象地域は北海道で津波浸水想定域内の人口が最多となる北海道釧路市であり(橋本2014)，津波浸水深4.0m以上の地域にある認可保育園(13園)と認可外保育園(4園)に対して，現在の津波避難対策および懸念に関して聞取り調査や質問紙調査を行う．この結果から，津波災害対策やその課題を保育施設の集団避難時の移動面と災害対策等の運営面に分けてまとめる．さらに，認可保育園と認可外保育園の災害対策や懸念に関する差異を検討する．
2.保育施設と自治体の災害対策と課題 保育施設の課題と対策をみると(図1)，冬季にみられる課題が多く，特に移動面の課題である歩行速度の低下や避難効率の低下への対策が不十分だと推測される．また，避難施設の増設や暖房設備の設置など，避難施設の質や量の充実が必要だとわかる．
3.認可保育園と認可外保育園の災害対策における差異 認可保育園と認可外保育園の災害対策をみると，認可保育園より認可外保育園のほうが介助者となる保育士や職員が少ない傾向がみられる．これは，認可外保育園のほうが認可保育園よりも緩い職員配置基準が採用されていることが要因と考えられる．
4.結論 本研究では以下のことが明らかになった． 1)冬季の低温を考慮した暖房設備の設置が進んでおらず，避難施設の量的拡充に加えて，今後は質的向上が自治体の支援として求められる． 2)介助者不足の時間帯は認可保育園，認可外保育園双方にみられ，近隣住民の災害時支援を自治体が開く地域合同避難訓練等で促進する必要がある． 3)認可外保育園のほうが認可保育園よりも災害時の介助者が少ない傾向にあると考えられる． 以上より，福祉施設の災害対策における課題は自然環境や，福祉政策，住民との共助関係などの背景から発生しており，国や自治体の減災政策に加えて，保育施設や住民による自助や共助を最適化する支援や災害を考慮した福祉政策の実現が重要となるであろう． - マイクロジオデータからみた積雪寒冷地の都市変化と災害リスク (2014年大会特別研究発表 : 報告・討論の要旨および座長の所見)
橋本 雄一, 藤井 正, 碓井 照子
人文地理, 67, 1, 87, 91, 人文地理学会 ; 1948-, 2015
Japanese - Problems of Tsunami Evacuation Viewed from Activities by Voluntary Organizations for Disaster Prevention in Kushiro City
NIHEI Takaaki, HASHIMOTO Yuichi
Bulletin of the Hokkaido Geographical Society, 90, 1, 1, 14, The Hokkaido Geographical Society, 2015, [Peer-reviewed], [Last author]
Japanese, Scientific journal, According to the new assumptions about tsunami inundation that were modified after the Great East Japan Earthquake in 2011, it is estimated that 13 million people live in the likely tsunami inundation area in Kushiro, a city on the Pacific Ocean coast of eastern Hokkaido. This number, 70％ of the cityʼs population, is the largest among the cities on Hokkaido. The urban center of Kushiro is also subject to adverse conditions for tsunami evacuation, as it faces the ocean, and is surrounded by rivers and railways. This study examines the problems of tsunami evacuation in Kushiro City, by analyzing the current state of disaster prevention activities carried out by voluntary organization for disaster prevention. The primary method of enquiry is analysis of quantitative data obtained from interviews with the United Councils for Promoting Disaster Prevention, the Neighborhood Associationsʼ Union, neighborhood associations, and City Hall. We paid particular attention to the activities of the United Councils for Promoting Disaster Prevention, which cover evacuation drills for multiple neighborhood associations. The results demonstrate that effective evacuation drills should take account of the distance from and route to evacuation facilities （such as schools, public buildings, and evacuation apartments）, the impact of traffic congestion on travel by car, the time and place of any ice on the roads, the age profile of local residents, and any connections between residents. Several problems are apparent, such as the lack of the successors to community organization leaders, who are aging, and a lack of concern by residents about the"rules"of tsunami evacuation. In future, disaster drills must be carried out on the assumption of winter evacuation, and evacuation facilities that are not exposed to the open air must be acquired. - A study of the population presumption on tsunami hazard zone in Hokkaido, Japan
Yuichi Hashimoto
The Annual Report on Cultural Science, 144, 144, 31, 65, 北海道大学文学研究科, Nov. 2014, [Lead author]
Japanese, Research institution - A spatial analysis of tsunami inundation risk in the coastal area of Hokkaido (3)
MOGAMI Ryunosuke, HASHIMOTO Yuichi
Proceedings of the General Meeting of the Association of Japanese Geographers, 2014, 57, 57, The Association of Japanese Geographers, 2014
本研究は認可保育園(以下、保育園)を対象に乳幼児の津波集団避難行動における課題を明らかにすることが目的である。分析の結果、明らかになった点は以下の通りである。(1)避難先の変更に伴い避難先階数は上昇したが、避難施設機能の低い場所への避難が増え、冬季には二次災害が懸念される。(2)避難先選定は保育園の周辺環境が工業地・住宅地である場合、困難となる。(3)介助者が少ない散歩・登園時・降園時は避難が困難となる可能性がある。以上により、都心部の保育園よりも周辺部の保育園の方が津波災害リスクは大きい事、また都心部・周辺部ともに冬季積雪期には災害リスクが高まる傾向にある事が分かった。 - A spatial analysis of tsunami disaster risk in the coastal area of Hokkaido (1)
Hashimoto Yuichi
Proceedings of the General Meeting of the Association of Japanese Geographers, 2014, 55, 55, The Association of Japanese Geographers, 2014
This research aimed to clarify the tsunami risk of coastal area in Hokkaido. Therefore, the research presumed the population on the tsunami hazard zone. As a result, the night-time population and the daytime population were decreasing in this zone. However, many people were distributed in the zone and the important risks remained in several districts. - A spatial analysis of tsunami disaster risk in the coastal area of Hokkaido (2)
KAWAMURA Takeshi, HASHIMOTO Yuichi
Proceedings of the General Meeting of the Association of Japanese Geographers, 2014, 56, 56, The Association of Japanese Geographers, 2014
This research aimed to clarify relations of the tsunami disaster risk and the urban structure of the port city in the cold and heavy snow area. The study area is Otaru city and Tomakomai city in Hokkaido. As a result of analysis, in Tomakomai city, the disaster risk is high because of the agglomeration of the port function. However, population who refuge difficult has decreased by many shelters. On the other hand, in Otaru city, the disaster risk is small, but shelters are not enough. From these, it was clarified that urban structure transformation by the urban development in costal area affected the tsunami disaster risk. - A Geographical Study of the Change in Urvan Development in Sapporo City
Shiozaki Daisuke, Hashimoto Yuichi
Proceedings of the General Meeting of the Association of Japanese Geographers, 2014, 18, 18, The Association of Japanese Geographers, 2014
本研究は、開発許可制度に着目して地方都市における中規模開発の変化を時系列的に明らかにすることを目的とする。本研究では事例地域として札幌市を取り上げる。2,226件の開発行為を分析した結果、地方都市の都市開発は、景気の動向に大きく影響を受けて変化しており、特に景気減退期ではまず開発行為の規模が縮小し、その後、開発エリアが縮小するという傾向が明らかとなった。 - Creation of Independent Tsunami Hazard Maps by Local Governments: An Examination of the use of Project Management Techniques
FUKADA HIDEMI, HASHIMOTO YUICHI
Papers and proceedings of the Geographic Information Systems Association, 23, C-2-3, 2014, [Last author]
Japanese, Symposium - Development and Application of the Snowplow Positioning System using ICT
SHIOZAKI DAISUKE, HASHIMOTO YUICHI
Papers and proceedings of the Geographic Information Systems Association, 23, E-4-3, 2014, [Last author]
Japanese, Symposium - A State Analysis of Evacuation Routes in a Heavily Snow Covered and Cold Area Using Quasi Evacuation Trajectory Data: A Geographical Study of Niseko Town, Hokkaido
OKUNO YUSUKE, HASHIMOTO YUICHI
Papers and proceedings of the Geographic Information Systems Association, 23, C-1-5, 2014, [Last author]
Japanese, Symposium - Spatial analysis using of population census mesh data and shelter data
MIYOSHI TATSUYA, HASHIMOTO YUICHI
Papers and proceedings of the Geographic Information Systems Association, 23, C-5-2, 2014, [Last author]
Japanese, Symposium - Spatiotemporal analysis of urban structure and tsunami disaster of port city in cold and heavy snow area
KAWAMURA TAKESHI, HASHIMOTO YUICHI
Papers and proceedings of the Geographic Information Systems Association, 23, C-2-2, 2014, [Last author]
Japanese, Symposium - Spatial analysis about location of nursery school and tsunami refuge in Kushiro
MOGAMI RYUNOSUKE, HASHIMOTO YUICHI
Papers and proceedings of the Geographic Information Systems Association, 23, D-3-2, 2014, [Last author]
Japanese, Symposium - A Study on the Application of Fuzzy AHP for the Regional Characteristics Analysis in Tourist Area
KAWAMURA SHIN'YA, FUKADA HIDEMI, HASHIMOTO YUICHI
Papers and proceedings of the Geographic Information Systems Association, 23, B-7-4, 2014, [Last author]
Japanese, Symposium - Proposal of tsunami evacuation support system using a tablet PC
FUKADA HIDEMI, HASHIMOTO YUICHI, AKABUCHI AKIHIRO, OKI MIYUKI, OKUNO YUSUKE
Multimedia, Distributed, Collaborative and Mobile (DICOMO2013) Symposium, 2013, 2, ROMBUNNO.8E-4, 1944, 03 Jul. 2013
Japanese, Symposium - Spatial analysis of tsunami evacuation during the snowy season in Hokkaido coastal cities using GIS
Yuichi HASHIMOTO
Journal of the Hokkaido Development Association, 600, 54, 58, 北海道開発協会, Jul. 2013, [Invited], [Lead author]
Japanese, Research society - Geographical study on evacuation during tsunami disaster during snowy season in Hokkaido coastal cities using GIS
Yuichi HASHIMOTO
Hokkaido Development Association 2012 Granted Research Papers, 163, 183, 2013, [Lead author]
Japanese, Research institution - Spatial analysis of hospitals for the rural medical issues
Tatsuya MIYOSHI, Yuichi HASHIMOTO
Papers and proceedings of the Geographic Information Systems Association, 22, B-6-1, 2013, [Last author]
Japanese, Symposium - A Spatial Analysis by Network Voronoi Tessellations for the Tsunami Evacuation Region in the Snow in the Snow Coverage Term on the Hokkaido Pacific Coast Zone
Yuichi HASHIMOTO
地理情報システム学会講演論文集(CD-ROM), 22, D-4-4, 2013, [Lead author]
Japanese, Symposium - A Spatial Analysis of Tsunami Refuge Behavior Using GPS Log Data in a Heavy Snow and Cold Area : a Geographical Study in Kushiro, Hokkaido
Yusuke OKUNO, Yuichi HASHIMOTO, Hidemi FUKADA
Papers and proceedings of the Geographic Information Systems Association, 22, F-1-2, 2013
Japanese, Symposium - Evaluation of Tsunami Refuge Support System using mobile GIS with offline capability －Taking Otaru City, Hokkaido as the experimental field－
Hidemi FUKADA, Yuichi HASHIMOTO, Akihiro AKABUCHI, Miyuki OKI, Yusuke, OKUNO
Papers and proceedings of the Geographic Information Systems Association, 22, D-1-4, 2013
Japanese, Symposium - 都市内部における観光情報と土地利用情報の統合データベース構築―北海道小樽市を事例として―
奥野祐介, 橋本雄一, 深田秀実, 川村壮
情報処理学会シンポジウム論文集, 2012, 7, 5, 10, 10 Nov. 2012, [Peer-reviewed], [Invited]
Japanese, Symposium - Applications of Quantum GIS for Developments of Tsunami Hazard Maps in Hokkaido
Yuichi HASHIMOTO
The Annual Report on Cultural Science, 137, 137, 137, 219, 北海道大学大学院文学研究科, Sep. 2012, [Lead author]
Japanese, Research institution - Analyses of Impact of the Great East Japan Earthquake and Tsunami Risk in Hokkaido by utilizing the Basic Geo-spatial Information of Japan
Yuichi HASHIMOTO
Bulletin of the Faculty of Humanities and Human Sciences, Hokkaido University, 136, 141, 203, 北海道大学, Mar. 2012, [Lead author]
Japanese, Research institution - Proposal of Technique for 3D Visualization of Behavioral Data on Scenic Walk using Geographic Information System
Hidemi FUKADA, Yusuke OKUNO, Akira Otsu, Yuichi HASHIMOTO
Tourism and Information: Journal of Society for Tourism Informatics, 8, 1, 51, 66, 観光情報学会, 2012, [Last author]
Japanese, Symposium, 近年，観光分野では.GPS受信機の普及に伴い，小型で軽量なGPSロガーを用いた観光行動調査が行われるようになってきた.この調査で得られるGPSログデータの可視化手法のひとつとして.GISを用いたカーネル密度推定がよく知られている.しかし，この手法では，単一の行動データに対して，観光者のおおまかな行動範囲や長時間滞留している場所を可視化できるが，行動軌跡や時間経過に伴う滞留場所の変化を把握することは難しい.そこで，本研究では，観光者の歩行速度に着目し.GPSロガーで取得した観光歩行行動データに対する可視化手法のひとつとして.GIS:lS::用いた3次元可視化手法を提案する.小樽市を訪れた観光者の歩行行動GPSログデータに対して，本提案手法を適用したところ，観光者の行動軌跡を可視化することができ，滞留している場所やその時間帯といった観光行動に関する情報を抽出できる可能性があることがわかった. - The Change of Land Use in Tsunami Inundation Zone Urban Area: A Case of Otaru City
Takeshi KAWAMURA, Yuichi HASHIMOTO
Papers and proceedings of the Geographic Information Systems Association, 21, C-2-3, 2012, [Last author]
Japanese, Symposium - Creation of Independent Tsunami Hazard Maps by Local Governments: A Discussion of the use of Project Management Techniques
Hidemi FUKADA, Yuichi HASHIMOTO
Papers and proceedings of the Geographic Information Systems Association, 21, C-4-1, 2012, [Last author]
Japanese, Symposium - "Population centripetal movements" phenomenon using GIS and spatiotemporal analysis of evacuation in the event of a disaster
Yuichi HASHIMOTO
Docon Report, 191, 2, 7, Jan. 2012, [Invited], [Lead author]
Japanese, Research society - Land Use Change in the Condominium Construction Place in Central Sapporo: A Spatial Analysis of Detailed Housing Data during the Population Growth Period
ASADA HAJIME, HASHIMOTO YUICHI
Geographical Studies, 87, 2, 14-25, 2012, [Peer-reviewed], [Last author]
Japanese, Scientific journal - Use of GIS and Fundamental Geospatial Data for disaster prevention
Yuichi HASHIMOTO
Docon Report, 190, 2, 7, Sep. 2011, [Lead author]
Japanese, Research society - Development of laws on geospatial information in Japan
Yuichi HASHIMOTO
Docon Report, 189, 2, 7, Jun. 2011, [Lead author]
Japanese, Research society - Developments of 3D Teaching-materials for Geology Information using GIS and Virtural Reality
Yuichi HASHIMOTO, Takeshi KAWAMURA
The Annual Report on Cultural Science, 133, 155, 205, Hokkaido University, Mar. 2011, [Lead author]
Japanese, Research institution - Urban developments in a local city: a geographical study of Sapporo City
SHIOZAKI DAISUKE, HASHIMOTO YUICHI
Proceedings of the General Meeting of the Association of Japanese Geographers, 2011, 26, 26, The Association of Japanese Geographers, 2011
Japanese, 1. はじめに わが国では高度経済成長期以降、都市部への人口流入と経済的発展を背景として、都市とその周辺で多くの宅地開発が行われてきた。特にバブル期には経済的要因から、全国的に都市開発が活発化し、またマクロスケールでは大都市圏から非大都市圏へ、ミクロスケールでは地方中核都市とその周辺に開発が集中する傾向が明らかにされている。しかし、これまでこういった全国的な都市開発の動向と地方における都市開発の詳細な動向が比較・考察されることは少なかった。本研究の目的は、全国の動向を背景に、地方の都市における開発行為の時系列変化を明らかにすることである。2. 研究方法 まず都市計画法に基づき、開発事業主から札幌市に申請された開発行為が全て記載されてある『開発許可申請登録簿』のデータ（計2285件）を整理する。そのデータを基に（1）札幌市における開発行為の時系列変化を分析し、事業件数と推移から開発行為の動向を把握するとともに、先行研究によって論じられた全国の都市開発の動向と比較・考察を行う。（2）札幌市市街化区域内において、開発行為の分布を分析し、札幌市における都市開発の時系列変化を明らかにする。（3）札幌市において行われた開発行為を事業主別に分類する。そして開発行為を本州資本の企業と、道内資本の企業とに分類し、その分布及び開発規模の時系列変化を分析することによって、本州資本の企業の企業が地方の都市開発に及ぼす影響を明らかにする。3. 研究結果 本研究の結果は以下の通りである。（1）札幌市における開発行為の件数及び面積は、1980～1986年に減少し、1987～1994年に増加傾向に転じる。そして1995年から再び減少傾向転じ、全国の都市開発の動向と同様の傾向を示した。（2）全国の都市開発は3大都市圏から非大都市圏へ開発が移動するのに数年のタイムラグがあったが、地方中核都市では、3大都市圏とほぼ同時期に開発が集中していた。（3）札幌市市街化区域内ではバブル景気の影響を受け、開発行為が都市域全体に広がっていった。その後バブル経済の崩壊から約5年後に、開発行為が拡大から縮小に転じ、2000年代に入るといわゆる都心部での開発が見られるようになった。（4）本州資本の企業が郊外地域において大規模開発行為を行い、開発が行われた地域の道路区画やインフラの整備が整う。そこに道内企業の中・小規模開発が集中する傾向が見られた。（5）本州資本の企業は好景気時に札幌市において開発行為を行うが、不況期には地方における開発を控えるといった傾向が明らかとなった。またバブル経済の崩壊後、本州資本の企業のうち宅地開発を中心とする企業は継続的に開発行為を行うが、商業ビルなどを手掛ける企業は開発許可申請の間隔が10年以上開くようになった。道内資本の企業はバブル経済の崩壊後も継続的に開発行為を続けており、バブル経済期よりも開発面積を増加させている企業も見られた。 以上のように本研究では、開発許可制度を利用することで、地方における開発行為の詳細な時系列変化を明らかにした。また全国の都市開発の動向と併せて、地方の都市開発を考察した。 - Spatial Analysis of Agriculture with GIS and GPS
Takaaki NIHEI, Yuichi HASHIMOTO
Geographical Studies, 86, 1, 115, 126, Hokkaido Geographical Society, 2011, [Peer-reviewed], [Last author]
Japanese, Scientific journal - 基盤地図情報による被災状況の分析
地理, 56, 6, 28, 34, 2011 - A Change in the Location of Hotel Industry in Sapporo City: An Analysis by the New-Entry/Discontinuance Application
Arisa IMAI, HASHIMOTO Yuichi
Geographical Studies, 86, 1, 10, 23, Hokkaido Geographical Society, 2011, [Peer-reviewed], [Last author]
Japanese, Scientific journal - 観光歩行行動のマイクロジオデータに対する３次元可視化分析方法の検討
観光情報学会研究発表会講演論文集, 4, 41, 48, 2011 - Welfare for the Elderly in Urban Space from the Viewpoint of Varnerability in Snowy and Cold Areas-Analysis of Walking Space Using Geographical Space Information-
Yuichi HASHIMOTO
Journal of Hokkaido Development Association, 567, 10, 14, 北海道開発協会, Oct. 2010, [Invited], [Lead author]
Japanese, Research society - 室蘭市南部における高齢者の歩行空間分析
Shinya KAWAMURA Yuichi HASHIMOTO
Geographical Studies, 85, 75, 76, 30 Sep. 2010, [Last author]
Japanese, Research society - 積雪寒冷地域における高齢者の生活環境分析―室蘭市南部を事例地域として―
Sinya KAWAMURA, Yuichi HASHIMOTO
Geographical Studies, 85, 81, 30 Sep. 2010, [Last author]
Japanese, Research society - Spatio-temporal Analysis of Urban Development and Geology Information in Sapporo
KAWAMURA Takeshi, HASHIMOTO Yuichi
Proceedings of the General Meeting of the Association of Japanese Geographers, 2010f, 72, 72, The Association of Japanese Geographers, 2010
Japanese, _I_ 目的と方法
本研究は，寒冷地に多く分布する軟弱地盤である泥炭地が開発されてきた歴史を持つ札幌市を対象とし，都市部における地質と土地利用の相関関係を明らかにし，都市開発における問題点を検討することを目的とする．
本研究で用いる地質情報に関しては，札幌地盤図（2006）を参考に，札幌市の地質を盛土，泥炭，粘土，シルト，砂，砂礫，粘土混じり砂礫，岩盤，火山灰質砂，火山灰の10種類に分類し，電子化された地質図を作成する．
土地利用情報に関しては，2000年及び2007年の都市計画基礎調査を用いて，建物密度（延床面積／建物面積）及び高層化指数（2007年建物密度－2000年建物密度）を算出する．なお，土地利用の種類は専用住宅（戸建住宅等），共同住宅（マンション等），専門商業施設，店舗施設，都市運営施設，工場施設の6種類を抽出し，それぞれ延床指数（任意の建物用途の延床面積／地区面積）及びその変化（2007年延床指数－2000年延床指数）を算出する．
以上のような地質情報と土地利用情報を空間的に結合させ，地質別の土地利用変化を明らかにする．最後に，この結果を用いて都市開発における問題点を検討する．
_II_ 札幌市の地質
札幌市における代表的な軟弱地盤である泥炭地は主に豊平川の氾濫原である北東部に分布しており，地盤の不等沈下の影響が出ている地域もある．また，盛土は主に南東部に局所的に分布しているが，これは宅地造成等のために谷が埋め立てられた結果として形成されたものである．2003年の十勝沖地震の際には，札幌市においても盛土の分布域の一部で液状化現象が発生している．
_III_ 地質別の土地利用変化の関係
地質情報と土地利用情報を空間的に結合させ，地質別の土地利用変化を分析した結果，建物密度と高層化指数は，いずれの年次においても砂礫や粘土の分布地域で高く，地質条件の良い中心部において建物の高層化・稠密化が進んでいると考えられる．しかし，高層化指数は泥炭と盛土でプラスの値を示しており，当該に地域において建物の高層化・緻密化が進行していることを表している．
次に，建物用途別の延床面積と地質の関係をみると，専用商業施設，専用住宅施設，共同住宅施設は砂礫や粘土の分布地域に立地する割合が高いものの，いずれも泥炭で延床面積が増加している．特に専用住宅と共同住宅が大きく増加しているが，これは地質などの自然条件以外の経済的な理由が建物立地に大きく影響しているためであると考えられる．
_IV_ 結論
本研究は，寒冷地の都市内部における地質情報と土地利用情報とを統合して時空間分析を行い，両者の関係を明らかにした．その際，本研究は，寒冷地の特徴的な地質である泥炭に注目して分析を行った．
その結果，泥炭が存在する地域には，専用住宅や都市運営施設が多く立地しているが，2000年以降には共同住宅の立地が進むといった動向がみられた．この結果には，近年札幌市においてマンション供給の飽和状態が指摘される中で，より安価なマンションの供給を行うため，土地取得の容易な地域での共同住宅開発が行われていることも影響していると考えられる．
泥炭地における共同住宅開発は，住環境維持のためのコストの肥大化，地震をはじめとする自然災害に対する脆弱性の増大などが伴う可能性がある．こうしたコストやリスクの増大を防ぐためには，地質情報などの自然条件に関する情報と，土地利用に関する情報を統合的に管理し，両者の関係について継続してモニタリングしていく必要がある． - Regional analysis using GIS and geospatial information-Approach from geography-
Yuichi HASHIMOTO
The journal of survey (Annual Report of Hokkaido Branch of Japan Surveying Association), 61, 29, 35, 2010, [Invited], [Lead author]
Japanese, Research society - Spatio-temporal Analysis of Shelter Capacity in Heavy Snow City using Network Voronoi Diagrams
Fumi TERAYAMA, Yuichi HASHIMOTO
Papers and proceedings of the Geographic Information Systems Association, 19, 5G-2, 2010, [Last author]
Japanese, Symposium - Spatio-temporal Analysis of Medical Institution Territory in Hokkaido using Network Voronoi Diagram
Yoshiya UMETSU, Yuichi HASHIMOTO
Papers and proceedings of the Geographic Information Systems Association, 19, 3G-1, 2010, [Last author]
Japanese, Symposium - A Study on the Application of Fuzzy AHP for Living Environmental Data
KAWAMURA Shin'ya, HASHIMOTO Yuichi
地理情報システム学会講演論文集 = Papers and proceedings of the Geographic Information Systems Association, 18, 545, 548, 15 Oct. 2009
Japanese - Basic Act and Basic Plan on the Advancement of Utilizing Geospatial Information
Hashimoto Yuichi
The annual report on cultural science, 127, 左59, 左86, Hokkaido University, 25 Feb. 2009, [Lead author]
Japanese, Research institution - Living Environment Analysis for Elderly in Muroran City
Kawamura Shin'ya, Hashimoto Yuichi
Proceedings of the General Meeting of the Association of Japanese Geographers, 2009f, 75, 75, The Association of Japanese Geographers, 2009
Japanese, 1.はじめに
日本では，高齢者人口の急速な増加が都市部においても顕著であり，それに伴い高齢者を支える社会福祉の研究も盛んである．北海道においても小樽市や室蘭市などの都市で高齢者人口が多く，これらの都市では市街地の大部分が傾斜地に位置していることから．路面凍結が起きる冬季には日常的な歩行行動に多大な困難が伴う．しかし，そうした積雪寒冷地の都市環境と生活行動とを関連づけた研究事例は極めて少ない．そこで本研究では，室蘭市を対象地域とし，まず高齢者の歩行行動を空間的に把握し，そして歩行空間をベースとした生活空間の解析により，高齢者の視点に立った都市の生活環境特性を解明することを目的とする．
2.研究方法
室蘭市から対象地区として，南部の傾斜地に位置する2地区を選定し，それらの地区に居住する高齢者に聞き取り調査を実施した（2007年12月〜2008年1月）．上述の2地区は，傾斜地がきつく，行動の地理的制約が大きいと考えられる．調査した項目は，(1)日常生活における行動パターン，(2)歩行空間に関する評価，(3)家族構成・居住年数・年齢の3つである． (2)の歩行空間に関する評価に関し，都市施設には，a）施設の特性・魅力，b）施設の雰囲気・施設内におけるコミュニティ，c）居住地からの利便性，歩行路には，d）ルートの自動車交通量，e）街灯などのルートの雰囲気，f）坂や階段等の物理的な障害という評価項目を設定し，項目間の1対比較行列をつくり，AHP（階層分析法）を用いて解析を行う．さらにファジィ理論をAHPに適応させ，高齢者の日常生活における生活環境を総合的に検討する．
本研究では，65歳以上の高齢者の日常生活で，外出時に使用される都市施設（商業施設，医療施設）と歩行路の評価に関してファジィAHPを試みる．AHPに非加法性を許容するファジィ測度を用いることにより，施設や歩行路の長所を重視するMM評価，短所を重視するMN評価，さらにウェイトの平均値を加算するN評価の3つの評価を算出することにより，極めて酷似した評価基準の導入によって生じる評価の逆転現象の解消や，多様な評価結果も解釈を得ることが可能である．そこで本研究では高齢者の生活環境調査のデータを基にファジィAHPを行い，都市の生活環境特性を解明するために，ファジィAHPの結果を空間分析に適応させることとする．
3.結果
本研究の分析結果で，都市施設に関しては，以下の通りである．当該地域の高齢者はバスや自家用車等に頼らなければ，医療施設や商業施設へ到達することができず，居住地付近では最寄りのバス停までの歩行が日常生活行動の大半を占める．高齢者を65歳から74歳までの前期高齢者，75歳以上の後期高齢者にわけて，それぞれの結果を検証すると，医療施設と商業施設の両方で，前期高齢者と後期高齢者が「利便性」を高く重視し，より身近で便利な場所に都市施設設置への要望が高いと考えられる．ファジィAHPによる医療施設の評価では，MM評価で「総合病院」の評価得点が高く，これはバスと歩行によるアクセスを重視した結果であると考えられる．商業施設の評価では，居住地からバスで25分ほどの「スーパー」への評価得点が高いが，前期高齢者ではバスで45分ほどかかる「百貨店」の評価得点も，ある程度の高さの評価の高さをもち，後期高齢者に比べて選好範囲や行動範囲の広いことが分析により明らかである．
歩行路に関する分析では，評価項目での重要度は，夏季と冬季で異なり，前期高齢者は冬季に物理的障害が，後期高齢者では冬季にルートの雰囲気の項目の値が高まる．これは冬季の日暮れの早さが影響していると考えられ，後期高齢者は，坂や階段とともに薄暗い歩行路を避ける傾向があるように思われる．ファジィAHP で解析すると，両地区で冬季の歩行路の評価で得点差の値の差が全ての評価で小さくなる．これは冬期間に歩行路上を覆う雪や氷が影響していると考えられる．しかし，前期高齢者で「近隣ルート」の評価値がMM評価やMN評価で夏季よりも高くなることから，前期高齢者は後期高齢者に比べて，雪や氷の影響を受けにくいことがわかる．
このように聞き取り調査とファジィAHPによる空間解析を行ったことにより，「近隣ルート」等の居住地から身近な歩行路において，前期高齢者と後期高齢者の評価の違いが明らかになるなど，高齢者の視点に立った生活環境特性が解明された． - Temporal and Spatial Analysis of Land Use Information and Geology Information in Cold Urban Area
HASHIMOTO Yuichi, KAWAMURA Takeshi
地理情報システム学会講演論文集 = Papers and proceedings of the Geographic Information Systems Association, 17, 529, 534, 23 Oct. 2008, [Lead author]
Japanese, Symposium - Reconcentration of population and dwelling space in Sapporo City: temporal and spatial analysis using geo-information and GIS
Yuichi HASHIMOTO
開発こうほう, 543, 1, 5, 北海道開発協会, Oct. 2008, [Lead author]
Japanese, Symposium - The Organization of Integrated Database using GIS for the Road Management and Driving Behavior after Spraying the Antifreezing Agent
HASHIMOTO YUICHI, KAGAYA SEIICHI, HAGIWARA TOORU
Geographical Studies, 83, 83, 3, 11, The Hokkaido Geographical Society, 31 Jul. 2008, [Peer-reviewed], [Lead author]
Japanese, Scientific journal, This paper aims at creating the integrated database using GIS for road management and driving behavior after spraying the antifreezing agent in Sapporo City, Hokkaido. By this database, the study clarified the relation between the behavior of automobile driver and the road condition in winter. Furthermore, this paper considered the conditions in the case of becoming easy to slide immediately after spraying of an antifreezing agent. In the method, the Antifreeze Spraying Data and AMeDAS Data link to the Road Management Survey Data. As the result, it became clear of analysis that the road condition, the maximum temperature, the lowest temperature, and the daylight hours influenced the slip level of winter road. During two hours from antifreeze spraying, when the road condition was the black-ice-burn, especially the automobile is easy to slip on the road. From this research, it is considered that the compatibility between databases creates the beneficial information for road administrators, traffic administrators, and road users. - Spatio-temporal Structure of Buildings and Reconcentration of Dwelling Space in Sapporo City
HASHIMOTO Yuichi
Journal of Geography (Chigaku Zasshi), 117, 2, 491, 505, Tokyo Geographical Society, 25 Apr. 2008, [Peer-reviewed], [Invited], [Lead author]
Japanese, Scientific journal, This study clarifies the spatio-temporal structure of buildings in Sapporo City and the reconcentration of dwelling space in the central area. The data used in the analysis are gross floor area ratio (gross floor area of each building use [m2]/district area [m2]), and the data sources are the basic survey data for city planning of Sapporo City in 1980, 1986, 1991, 1996 and 2001. First, this research applies the quasi three-mode factor analysis to a three-dimensional matrix (3,934 districts×14 building uses×5 years), and considers the spatio-temporal structure of the buildings in Sapporo City. Next, it analyzes the locations of houses, apartments, and commercial establishments by direction from the central area, and accessibility to railroad and subway stations. The main results are as follows. Regarding the spatio-temporal structure of buildings in Sapporo City, commercial establishments predominate in the central area, and houses and apartment houses occupy most of the surrounding area. The density of buildings is greater along the subway line. Apartment houses increase in density as opposed to commercial establishments or houses near stations around the central area. It is thought that reconcentration of this dwelling space in the central area is a phenomenon observed during the period of this research, and accelerated from the second half of the 1990s. Moreover, GIS is a useful tool for creating map data with a new boundary line, as well for calculating attribute data accompanying boundary changes in the analyses. - 積雪寒冷地の都市内部における人口の都心再集中に関する分析
（財）北海道開発協会平成18年度助成研究論文集, 133, 158, 2007 - Development of Three-dimensional Materials for Geographical Education by Virtual Reality and Animation
HASHIMOTO YUICHI
北海道地理, 2006, 81, 1, 18, The Hokkaido Geographical Society, 31 Jul. 2006
Japanese, This study clarified the education effect by utilizing GIS and virtual reality (VR) tools in geographical education. For this purpose, this research created the two type materials for geographical education, 'operation-type materials' and 'appreciation-type materials', and compared those effects. These teaching materials were made using 3D data, GIS, and VR technology, and the materials had the functions of perpendicular viewpoint movement, horizontal viewpoint movement, angle change, and map element change. The operation-type materials and the appreciation-type materials were used in the lecture of a university and a high school and this study argued the difference of the education effects between the two materials. As a result, the operation-type materials were suitable to make a student discover something and raise interest, and the appreciation-type materials were suitable to transmit knowledge to a student efficiently for a short time. If the operation-type and appreciation-type teaching materials are used together, we can increase the search volition of geographical knowledge from a student besides. The accumulation of geographical knowledge heightens the spatial reasoning capacity of student each. Furthermore, the improvement in spatial reasoning capacity enlarges the search volition. The 3D teaching materials created by GIS and VR have high effects in the geographical education in order to make the above circulation during session of a school. - Applications of Network Voronoi Diagrams for Spatial Analyses
Emi, SOMA Yuichi, HASHIMOTO
Annals of the Hokkaido Geographical Society, 81, 81, 29, 37, The Hokkaido Geographical Society, Jul. 2006, [Peer-reviewed], [Last author]
Japanese, Scientific journal, This study discusses applications of Network Voronoi diagrams for spatial analyses. I compared Network Voronoi diagrams with plane Voronoi diagrams. This method does not make network cells on the line of the network, but makes areas using network distance. In this method, a plane Voronoi region is made for every node on a street network. The nodes have the nearest shelter point from them by network distance, and the shelter point holds the area of those nodes and makes one region, a Network Voronoi region. This method can overlay the point data on a plane and a network, and we represent moving by the nearest street. As a case study, I calculate the shortage of shelters' capacity using Network Voronoi diagrams. The study area is central Sapporo city. In this case, a Network Voronoi region represents the area that residents move to near shelters on street. This result shows applications of this method, Network Voronoi diagram for spatial analyses. - The Change in the Land Use in Noboribetsu Spa Area, Hokkaido
Naomi MEGA, Yuichi HASHIMOTO
Annals of the Hokkaido Geographical Society, 81, 81, 39, 44, The Hokkaido Geographical Society, Jul. 2006, [Peer-reviewed], [Last author]
Japanese, Scientific journal - The Application of Network Voronoi Diagram for the Analysis of Shelter-covered Districts
SOMA Emi, HASHIMOTO Yuichi
地理情報システム学会講演論文集 = Papers and proceedings of the Geographic Information Systems Association, 14, 443, 448, 30 Sep. 2005
Japanese - Development of Educational Package for the Regional Study with GIS : Volcano Area Study by Cooperation of School and Museum
HASHIMOTO Yuichi, KOSUGI Yasushi, ABE Tetsushi, SOMA Emi
地理情報システム学会講演論文集 = Papers and proceedings of the Geographic Information Systems Association, 14, 409, 414, 30 Sep. 2005
Japanese - Application of 3D-Index System for the Archaeology Information
ABE Tetsushi, KOSUGI Yasushi, HASHIMOTO Yuichi, SOMA Emi
地理情報システム学会講演論文集 = Papers and proceedings of the Geographic Information Systems Association, 14, 415, 418, 30 Sep. 2005, [Lead author]
Japanese, Symposium - Temporal and Spatial Structure of Retail Activities in Sapporo City
KYOKAME Satoshi, HASHIMOTO Yuichi
地理情報システム学会講演論文集 = Papers and proceedings of the Geographic Information Systems Association, 14, 13, 18, 30 Sep. 2005
Japanese - 『事例で学ぶGISと地域分析－ArcGISを用いて－』<高橋重雄，井上 孝，三條和博，高橋朋一編>
古今書院, 2005 - A Spatial Analysis of Road Surface Condition and The Driver's Behavior in Snowy and Cold Regions : A Case Study on the Database for the Winter Road Surface Management
HASHIMOTO Yuichi, KAGAYA Seiichi, HAGIWARA Toru, KAWAMURA Shin'ya, KYOKAME Satoshi
地理情報システム学会講演論文集 = Papers and proceedings of the Geographic Information Systems Association, 13, 1, 5, 30 Sep. 2004
Japanese - The Three-dimensional Archives of the remains on the Digital Earth
HASHIMOTO Yuichi, KOSUGI Yasushi, ABE Tetsushi, SOMA Emi, YAHASHI Junichiro, KOMATSU Tominari, TSUKADA Takashi
The three-dimensional archives of the remains on the Digital Earth, 13, 297, 302, 30 Sep. 2004, [Lead author]
Japanese, Symposium - Construction of DGI System Applying 3D Mapping Software : A Case Study on the Web Database for the Winter Road Surface Management
HASHIMOTO Yuichi, KAGAYA Seiichi, HAGIWARA Toru, KAWAMURA Shin'ya, KYOKAME Satoshi
地理情報システム学会講演論文集 = Papers and proceedings of the Geographic Information Systems Association, 13, 7, 12, 30 Sep. 2004
Japanese - Migration and Housing Location in Hakodate City
NUMATA Naoya, HASHIMOTO Yuichi
日本地理学会発表要旨集 = Proceedings of the General Meeting of the Association of Japanese Geographers, 66, 157, 157, 10 Sep. 2004
Japanese - The spatial structure of intra-urban shelter in the snowy area -A geographical study in Central Sapporo-
Emi SOMA, Shinya KAWAMURA, Yuichi HASHIMOTO
地理情報システム学会講演論文集, 13, 91, 96, 2004, [Last author]
Japanese, Symposium - The Application of GIS for the Spatial Analysis of Agricultural Census
Yuichi HASHIMOTO, Shin'ya KAWAMURA
Annals of the Hokkaido Geographical Society, 79, 79, 51, 68, The Hokkaido Geographical Society, 2004, [Peer-reviewed], [Lead author]
Japanese, Scientific journal - The Transformation of Intra-urban Structure by the Building Use Changes::The Application of Quasi Three-mode Factor Analysis for Temporal and Spatial Structure in Sapporo City
HASHIMOTO Yuichi
Geographical Studies, 78, 78, 23, 50, The Hokkaido Geographical Society, 2004
Japanese, This study clarified the transformation of intra-urban structure by the building use changes. Fig. 2 showed the study area, which is constituted 3090 districts. The data for analysis was the gross floor area ratio (gross floor area of each building use [m2]/district area [m2]), and the data source was the basic survey data for city planning of Sapporo City in 1980, 1986, and 1991. This study creates the three-dimensional matrix (3090 districts×15 building uses×3 years), and applied the quasi three-mode factor analysis (Fig. 3). The element of matrix was standardized as a formula (1), however i was a unit district (i=1, 2,...,1), j was a building use (j=1, 2,...,m), k was a year (k=1,...,n), xijk was a gross floor ratio in year k, district i and building use j, zijk was a standardized ratio in year k, district i and building use j, l was a total number of districts (l=3, 090), m was a total number of building use items (m=15), n was a total number of years (n=3). The main results were as follows.
At the first analysis, this study calculated the common building use factors in three years (Table 1 and Fig. 7) and the building use factors in each year (Table 2 and Fig. 8). It is considered that the building use factors in each year are the common zone factors in three years. Then, the core matrix was calculated as the correlation matrix between the common building use factors and the common zone factors in three years (Table 3). Consequently, it was clarified that the store combined with residence, and the restaurant combined with residence, the store combined with residence and the restaurant combined with residence were expanding the range from the urban core to the surrounding area along the main transportation networks, and that the residence and the apartment were dispersing to the suburb area. So, it became clear that regional differentiation of urban functions was progressing in Sapporo City (Figs. 9, 10).
At the second analysis, this study investigated the building use changes around the JR stations and the subway stations, that had considerable influence upon the transformation of intra-urban structure in Sapporo City. The districts for this analysis were included in the buffer of the radius r (r=100m, 200, 300m, 400, 500m) centering on a station (Figs. 11, 12). This study calculated the common building use (Figs. 13, 14) and the zone factors (Figs. 15, 16) in three years of the buffer area. Then, it was calculated the core matrix of the buffer area. Consequently, it was clarified that the building uses without the residence increased around the subway stations, and that the building uses were rapidly accumulated near the subway station (Figs. 17-21).
In this study, the two mentioned results were united and considered. When the mechanism for the transformation of intra-urban structure as the results is discussed, it can explain by uniting the urban land use theory and the central place theory that the D. I. D. and the functional accumulation area were expanded from the urban core to the surrounding area, and that the sub-centers formed along the subway lines and main roads. On the simplified conditions, it is thought that it can interpret by uniting both theories for the argument about a dynamic mechanism(Fig. 22). - Development of Teaching Materials in Geography by GIS and Animations
HASHIMOTO Yuichi
地理情報システム学会講演論文集 = Papers and proceedings of the Geographic Information Systems Association, 12, 201, 205, 30 Sep. 2003, [Lead author]
Japanese, Symposium - The problems of energy education in the high school textbooks on geography
Yuichi HASHIMOTO
The annual report on cultural science, 110, 左159, 左217, Hokkaido University, 31 Jul. 2003, [Lead author]
Japanese, Research institution - 北海道における社会資本ストックの集積と産業クラスターの形成
北海道開発協会開発調査総合研究所平成14年度助成研究論文集, 227, 321, 2003 - Application of Boolean Analysis for Qualitative Comparative Studies of Agricultural Settlements
HASHIMOTO Yuichi
Theory and Applications of GIS, 10, 2, 35, 47, Geographic Information Systems Association, 30 Sep. 2002, [Peer-reviewed], [Lead author]
Japanese, Scientific journal, This study tried to apply the Boolean Analysis for qualitative comparative studies of agricultural settlements. The study area is the Tokachi Plain in eastern Hokkaido, Japan. This study clarified how the peculiar properties of farm labor and acreage under cultivation of each farms effect on their cultivation plan by analyzing Agricultural Settlement Data (1970-95). In this study, Boolean Analysis was valid for the formulated description of the relationship between spatial factors in the qualitative data. Especially, the Quine-McCluskey Technique for the minimization of qualitative data was the useful method as the tool of GIS in the case of analyzing of secondary documents. - Development of Cluster for Knowledge Based Industry in Malaysia
Yuichi HASHIMOTO
Bulletin of the Faculty of Humanities and Human Sciences, Hokkaido University, 107, 107, 113, 169, 北海道大学文学研究科= The Faculty of Letters, Hokkaido University, Aug. 2002, [Lead author]
Japanese, Research institution - Application of Agricultural Census Settlement Data for Geographical Information System
Yuichi HASHIMOTO
Annals of the Hokkaido Geographical Society, 76, 76, 25, 36, The Hokkaido Geographical Society, 30 Apr. 2002, [Peer-reviewed], [Lead author]
Japanese, Scientific journal - 1. 北海道における人口高齢化の地域差 : GISを用いた空間分析(東日本地域部会(2001年11月17日/札幌市),地域部会報告要旨)
羽田野 正隆, 橋本 雄一, 川村 真也
人口学研究, 30, 124, 124, 日本人口学会, 2002
Japanese - Prospects for the transportation in Hokkaido
HASHIMOTO Yuichi
日本地理学会発表要旨集 = Proceedings of the General Meeting of the Association of Japanese Geographers, 60, 20, 20, 2001
Japanese - 『図説 大都市圏』<富田和暁・藤井 正編>
古今書院, 2001 - The Applications of Geographical Information System for Commercial Geography
Yuichi HASHIMOTO
Bulletin of the Faculty of Humanities and Human Sciences, Hokkaido University, 102, 102, 203, 227, 北海道大学文学研究科= The Faculty of Letters, Hokkaido University, Dec. 2000, [Lead author]
Japanese, Research institution - Commercial Geography and GIS
HASHIMOTO Yuichi
日本地理学会発表要旨集 = Proceedings of the General Meeting of the Association of Japanese Geographers, 57, 78, 79, 2000
Japanese, Symposium - 『GIS－地理学への貢献』<高阪宏行・村山祐司編>
古今書院, 2000 - Enactment of Intellectual Property Law caused by Establishments of Foreign Corporations in malaysia
HASHIMOTO Yuichi
Proceedings of the General Meeting of the Association of Japanese Geographers, 55, 50, 51, Mar. 1999, [Lead author]
Japanese, Symposium - Exports of Malaysian primary commodities in the Higher Economic Growth Era
Yuichi HASHIMOTO
Bulletin of the Faculty of Humanities and Human Sciences, Hokkaido University, 47, 3, 125, 178, 北海道大學文學部 = The Faculty of Letters, Hokkaido University, Dec. 1998, [Lead author]
Japanese, Research institution - Maritime Development in Malaysia
HASHIMOTO Yuichi
Proceedings of the General Meeting of the Association of Japanese Geographers, 54, 38, 39, Sep. 1998, [Lead author]
Japanese, Symposium - The Organization of Database for Building Use in Sapporo City
Yuichi HASHIMOTO
Proceedings of the General Meeting of the Association of Japanese Geographers, 53, 22, 23, Mar. 1998, [Invited], [Lead author]
Japanese, Symposium - Central Place System
Yuichi HASHIMOTO
Bulletin of the Faculty of Humanities and Human Sciences, Hokkaido University, 93, 247, 300, Mar. 1998, [Lead author]
Japanese, Research institution - Arc/Infoによる空間情報データベースの構築 (文部省S)
橋本雄一
持続的農業経営システムの確立と食糧供給力への影響予測 平成9年度 No.09356006, 82, 96, 1998
Japanese - Application of GIS for Three Dimensional Analysis of Intra Urban Structure
HASHIMOTO Y.
Proceedings of International Workshop on Urban Multi-Media/3D Mapping Systems: 'Geographic Information systems: Present and Future', 151, 156, 1998 - Agricultural Land Use and Environmental Factors in the Tokachi Plain
Yuichi HASHIMOTO, Keiji KIMURA
Theory and Applications of GIS, 5, 1, 19, 28, Geographic Information Systems Association of Japan, Feb. 1997, [Peer-reviewed], [Lead author]
Japanese, Scientific journal, This study attempts to quantitatively investigate the relatinship between agricultural land use and environmental factors through synthsizing various types of spatial data. The study area is the Tokachi Plain in eastern Hokkaido, Japan. In this analysis, data were transformed from raster data to vector data, creating a synthesizing data bank. Next, this study clarified the relationship between several types of spatial data in detail. In this study, agricultural land use was classified into rice, wheat, root crops and beans, crops for industrial processing, vegetables, feed crops, and horticulture. Environmental factors included altitude, slope angle, slope aspect, geomorphology, surface geology, soil type, temperature during the summer, and precipitation during the summer. In the overlay analysis of agricultural land use and these environmental factors, it was clarified that the land use type was determined by the geomorphology, the surface geology, and the temperature during summer in the Tokachi Plain. In future, agricultural planning will have to rely more and more upon data banks synthesized from various data sources. Correspndingly, the development of synthesizing techniques is of great importance for decision making. - Spatial chain patterns of intra-urban migration
Yuji Murayama, Takashi Inoue, Yuichi Hashimoto
Geographia Polonica, 69, 150, 152, 1997
English, Scientific journal, This research analyzes quantitatively the track of individual chain-type migration of many residents to determine how they move in response to changes in their lives, i.e., whether there is spatial regularity on the chain patterns of intra-urban migration. The study area for this research is the industrial city of Yokkaichi, Japan. The study helps us to understand the state of intra-urban migration at the non-aggregate level for all residents during a 15-year period. Special attention is given to the age at which a resident relocates, and to the interval between two successive movements, i. e., the stationary period. - 国別通商政策研究事業報告書－マレイシア－<アジア経済研究所>
アジア経済研究所, 1997 - 国別通商政策研究事業報告書－マレイシア－<アジア経済研究所>
アジア経済研究所, 1997 - Attempt to construct a joint database using a geographic information system
Yuichi HASHIMOTO
Proceedings of the General Meeting of the Association of Japanese Geographers, 49, 98, 99, 29 Mar. 1996, [Invited], [Lead author]
Japanese, Symposium - Consideration on the integration of vector data and raster data : Using the analysis of agricultural land use in the Tokachi Plain and the surrounding natural environment as an example
Keiji KIMURA, Yuichi HASHIMOTO
Proceedings of the General Meeting of the Association of Japanese Geographers, 49, 100, 101, Mar. 1996, [Invited], [Last author]
Japanese, Symposium - Analysis of Climate Data using Geographical Information System: A Case Study of Hokkaido Snow Depth Data
Kazutaka IWASAKI, Yuichi, HASHIMOTO
Annals of the Hokkaido Geographical Society, 69, 69, 39, 48, The Hokkaido Geographical Society, 30 Apr. 1995, [Peer-reviewed], [Last author]
Japanese, Scientific journal - The spatial structure of population in the Nagoya metropolitan area by age and gender
Science reports of the Institute of Geoscience, University of Tsukuba. Section A, 16, 69, 89, 1995 - The changes in accessibility space in Koriyama
Yuichi HASHIMOTO, Masashi HAMASATO
Annals of the Japan Association of Economic Geographers, 41, 3, 54, 72, The Japan Association of Economic Geography, 1995, [Peer-reviewed], [Lead author]
Japanese, Scientific journal, The purpose of this study was to examine changes in accessibility spaces in terms of public transportation between 1977 and 1987 in Koriyama, Fukushima Prefecture. In this study, accessibility space was defined as one of the functional regions in which several districts are closely linked together with high accessibility. Accessibility data were employed in this study. The accessibility data had information about the number of a public transportation (bus and railroads) services between zones in a day. This study had three main analysis. First, in order to specify the convenience of public transportation in each zone, accessibility scores were calculated using on the accessibility data. Second, in order to find the accessibility spaces and their changes in Koriyama, the accessibility data both in 1977 and 1987 were analyzed using quasi three-mode factor analysis. Finally, in order to show the spatial structure of public transportation network which contained the accessibility spaces, multidimensional scaling (MDS) was applied to analysis of the accessibility data. This study employed Kruskal's method which was one of the MDS models. Findings were summarized as follows. 1. The zone including Koriyama station had the highest accessibility score in both 1977 and 1987 (Fig. 5). Fig. 5 also showed that the accessibility scores gradually decreased from the Koriyama station outwards. However, there was a difference in the decline of accessibility score between the zones to the east of the Koriyama station and the zones to the west of that. The accessibility scores decline more steeply in the zones to the east of the Koriyama station than the zones to the west of that. Furthermore, zones with high accessibility scores increased around the Koriyama station from 1977 to 1987 (Fig. 6). 2. Core matrix derived from the quasi three-mode factor analysis revealed several accessibility spaces (Figs. 7, 8 and 9). The accessibility spaces in 1977 were found along the Ban-etsu Tosen, the Ban-etsu Saisen, the Suigun line, and eastern, western and south-western roads to the Koriyama station, and in the central area of Koriyama. The accessibility spaces in 1987 were found along the Ban-etsu Tosen, the Ban-etsu Saisen, the Suigun line, and eastern roads to the Koriyama station, and in the central area of Koriyama. These accessibility spaces exhibited a sectorial pattern in both 1977 and 1987. However, the accessibility spaces along the western and the south-western roads to the Koriyama station were not found in 1987. These accessibility spaces contained long distance connectivity. This result indicated that long distance connectivity had decreased from 1977 to 1987. 3. While the western, eastern and south-eastern zones in 1987 were located closer to the Koriyama station than those in 1977, the north-eastern and north-western zones in 1987 were situated farther from the Koriyama station than those in 1977 (Figs. 11 and 12). In general, changes in accessibility spaces were caused by the changes in public transportation network responding to changes in demands for its services. In other words, the changes in demands for public transportation service caused the changes in accessibility spaces. Therefore, it seems that the changes in demands caused the decrease in the long distance connectivity and the changes in distance between the Koriyama station and other zones of Koriyama from 1977 to 1987. The changes in demands for the public transportation services were related to increasing population in the western and southern zones of Koriyama. - 東京大都市圏外縁部における地方財政の空間構造
日本の三大都市圏, 93, 118, 1994 - Spatial Structure of Local Government Finance in Ibaraki Prefecture, Japan
Nobuo TAKAHASHI, Yuichi HASHIMOTO, Hiroshi KASHIMA
Geographical Review of Japan Series A, 67A, 5, 289, 310, The Association of Japanese Geographers, 1994, [Peer-reviewed]
Japanese, Scientific journal, The purpose of this paper is to elucidate the spatial structure of local government finance, through the investigation of regional differences and their effect on local government financial assistance to cities, towns and villages. Ibaraki Prefecture, which was selected as the study area, is located on the fringe of the Tokyo metropolitan area and has been urbanizing rapidly.
Data employed in this paper include the amount of annual expenditures and revenues for each municipality and other items during the three fiscal years 1970, 1930, and 1990. First, we will examine the composition of annual expenditures and revenues in each municipality, for a general view of regional differences and changes within Ibaraki Prefecture. Rural areas show higher dependence on the national or prefectural government as a source of revenue, while urban areas have a higher percentage of independent sources of revenue. In the southern part of this prefecture, urbanization being rapid, the ratio of independent sources of revenue has increased gradually (Fig. 3). The rate of non-votable expenditures presents a contrast between urban and rural areas (Fig. 4). The rate of investment expenditures shows a higher value in the southern part of this prefecture and in the mountainous northern area (Fig. 5). Regional variation in the composition of annual expenditures has tended to decline.
Second, to examine regional differences and their influence on municipal finance within this prefecture over 3 fiscal years, we prepared a data matrix consisting of three modes, which includes 88 municipalities (Fig. 1), 44 items of annual expenditures and revenues (Table 1), and the 3 fiscal years of 1970, 1930, and 1990. We conduct a quasi three-mode factor analysis, in an attempt to describe factorial change among years, for this data matrix (Fig. 2).
Eight factors were identified: two were explained as rural and urban regions, while the others were interpreted as localized factors (Fig. 6). Next, 6 item factors were identified: each factor was characterized as either a dependent source of revenue and non-votable expenditure, an independent source of revenue and investment expenditure, or higher dependence on local bonds in terms of sources of revenue, and so on (Table 3). Furthermore, correspondent relationships between areal factors and item factors were examined according to a core matrix (Table 4). There are two basic dimensions to a the spatial structure of local government finance in Ibaraki Prefecture: one is an urban region which is noted for its independent sources of revenue and level of non-votable expenditures ; the other is a rural region which is prominent for dependent sources of revenue and level of investment expenditures. These 2 dimensions were stable through our research period of 3 fiscal years. However, there was a tendency to depend on local bonds to cover shortages of revenue. Such a tendency was particularly noteworthy in the southern part of this prefecture and the mountainous northern area. The former reflects an absolute increase in the demand for sources of revenue in connection with rapid urbanization; the latter, a relative decrease in the independent sources of revenue which accompany a decrease in population. As a result, the spatial structure of local government finance shows, over and above the traditional framework of urban-rural contrast, a new contrast between regions within- and outside the Tokyo metropolitan area. - Applications of ARC/INFO in Geographical Analyses
HASHIMOTO Y.
Proceedings of the International Symposium on Geographic Information Systems : 'Geographic Information systems : Present and Future', 1994, 3, 197, 222, United Nations Center for Regional Development, 1994 - Spatial structure of fiscal finance in Ibaraki Prefecture
Nobuo TAKAHASHI, Yuichi HASHIMOTO, Hiroshi KASHIMA
Proceedings of the General Meeting of the Association of Japanese Geographers, 44, 124, 125, Oct. 1993
Japanese, Symposium - Accessibibity space in Niigata prefecture by public transportation network
Yuichi HASHIMOTO
地域調査報告, 15, 39, 47, 筑波大学, 1993, [Lead author]
Japanese, Research institution - Spatio-temporal structure of retail industry in the Tokyo metropolitan area
Yuichi HASHIMOTO
Proceedings of the General Meeting of the Association of Japanese Geographers, 42, 22, 23, Oct. 1992
Japanese, Symposium - Transformation of the Central Place System in Miura Peninsula.
HASHIMOTO YUICHI
Geographical Review of Japan Series A, 65, 9, 665, 688, The Association of Japanese Geographers, Sep. 1992, [Peer-reviewed], [Lead author]
Japanese, Scientific journal, This study attempts to investigate the transformation of the central place system in Miura Peninsula, located on the fringe of the Tokyo metropolitan area. The study area includes Kamakura-shi, Zushishi, Yokosuka-shi, Miura-shi and Hayama-mdchi in Miura Peninsula (Fig. 1). Three hundred eightythree districts are selected as analytical units in order to clarify the distribution of central functions.In this study, retail activities are defined as central functions.
Data employed in this paper are in the form of central function scores. The formula for the central function score is
Eij{nRi/n∑j=1Rj}
(j=1, 2, 3, …n),
where Cij is the central function score of function j in central place i, Eij is the number of the establishments serving function j, Rj; is the annual amount of sale of function j per establishment, and n is the number of the central functions. The central functions are the 53 activities shown in Table 1. Eij is derived from the yellow pages, and R; from the Census of Commerce. In this paper, an attempt is made to elucidate the transformation process of the intra-urban central place system from 1972 to 1985.
The major results of this study are summarized as follows:
(1) Central functions are classified by similarity of the distribution pattern. For 1972, central functions are classified into five function groups (Table 2): the high (Fa1), middle (Fa2), middle-low (Fa3), low (Fa4) and non-order functions (Fa5) Fa5 is made up of motor vehicle and motorcycle stores. For 1985, central functions are also classified into five functional groups (Table 3): the high (Fb1), middle (Fb2), low (Fb3) and two non-order functions (Fb4 and Fb5). Group Fb4 is constituted of motor vehicle stores, motorcycles stores and gasoline stations. Group Fb5 includes dress materials, secondhand and accessories stores. The six high-order functions in 1972 moved to the middle in 1985, and the seven middle-low order functions in 1972 moved into the low category in 1985 (Fig. 4).
(2) To investigate the central places, cluster analysis (Ward's method) is applied to the standardized central function scores calculated for each functional group. For 1972, analytical unit districts are classified into eight groups (Fig. 2): the highest (Ca1), high (Ca2), middle (Ca3), middle-low (Ca4), low (Ca5), and non-hierarchical central place groups (Ca6 and Ca7) and non-center group (Ca8). For 1985, analytical unit districts are classified into seven groups (Fig. 3) the highest (Cb1) high (Cb2), middle (Cb3), low (Cb4) and non-hierarchical central place groups (Cb5 and Cb6), and noncenter groups (Cb7). In terms of Ca6 and Cb5, there are also self-sufficient high-order functions such as department stores and large supermarkets. Groups Ca7 and Cb6 contain many motor vehicle stores.In both 1972 and 1985, the highest and high-level central places are located near railroad stations. This means that the central place system in Miura Peninsla is formed around the railroad station as a core. For 1972, the highest and high-level central places are surrounded with middle, middle-low and low-level central places in order of proximity. In 1985, by contrast, the low-level central places are dispersed along main roads, suggesting that central functions were accumulated in the districts located along the main roads.
(3) New functional groups (Fc1-Fc5) are established in order to examine changes in the distribution of central functions (Fig. 5). - Characteristics of population migration in Tsukuba City
Yuichi HASHIMOTO, Hiroshi KASHIMA
Proceedings of the General Meeting of the Association of Japanese Geographers, 41, 210, 211, Apr. 1992, [Lead author]
Japanese, Symposium - Geographical Characteristics of population in Tsukuba
Syuichi SHINOHARA, Yuichi, HASHIMOTO, Hiroshi KASHIMA, Atsushi TAIRA
Annals of Human and Regional Geography, 14, 9, 23, 筑波大学, 1992
Japanese, Research institution - The attributional, regional, and temporal dimensions of Iwate Prefecture : an application of three-mode factor analysis
Okuno Takashi, Inoue Takashi, Hashimoto Yuichi
Science reports of the Institute of Geoscience, University of Tsukuba. Section A, Geographical sciences, 13, 35, 58, University of Tsukuba, 1992
Japanese - The Transformation of Accessibility Spaces in terms of Public Transport in Iwate Prefecture
Yuichi HASHIMOTO
Annals of the Japan Association of Economic Geographers, 38, 3, 211, 228, 1992, [Peer-reviewed], [Lead author]
Japanese, Scientific journal - Transformation of retail centers on the periphery of metropolitan areas : Case study of Miura Peninsula, Kanagawa Prefecture
Yuichi HASHIMOTO
Proceedings of the General Meeting of the Association of Japanese Geographers, 39, 244, 245, Apr. 1991
Japanese, Symposium - The Attributional, Regional, and Temporal Dimensions of Iwate Prefecture: Consideration based on the concept of homogeneous region
Takashi OKUNO, Takashi INOUE, Yuichi HASHIMOTO
Annals of Human and Regional Geography, 13, 1, 22, 筑波大学, Mar. 1991, [Last author]
Japanese, Research institution - Iwate-ken niokeru basu koutsuu no henka
Hashimoto Yuuichi
Annals of Human and Regional Geography, 13, 125, 137, University of Tsukuba, 1991, [Lead author]
Japanese - Regional Characteristics of the Migration by Sex and Age Classes in Aichi Prefecture
Yuichi HASHIMOTO, Yuji MURAYAMA
Annals of the Tohoku Geographical Association, 43, 2, 122, 138, THE TOHOKU GEOGRAPHICAL ASSOCIATION, 1991, [Peer-reviewed], [Lead author]
Japanese, Scientific journal, This paper attempts to clarify the migration pattern by sex and age classes in Aichi Prefecture (Fig. 1), using the migration data in 1988 collected by the Bureau of Statistics, Aichi prefectural office. These data consist of origin and destination matrices between 103 areas classified by sex (male and female) and age classes (0-14, 15-19, 20-29, 30-64 and 65 and over).
Three mode factor analysis is conducted to find the migration structure of the complex O-D patterns (Fig. 3). First, as a result of factor analysis on destinated areas based upon Equations 2 to 5, eight factors are derived (Table 1). Five factors show the movement in the marginal part in Nagoya-shi and its surrounding areas, and two factors show the movement within the urban areas in Nishimikawa region, central part in the prefecture, One more factor shows the movement around Komaki-shi located in the northern part of Nagoya-shi.
Second, as a result of factor analysis on origins based upon Equations 6 to 11, nine factors are derived (Table 2). Two factors show the movement in the central part in Nagoya-shi, four factors in the marginal part in Nagoya-shi and its surrounding areas, one factor in the areas around Komaki-shi and two factors in the Nishimikawa region.
Finally, as a result of factor analysis based upon sex and age classes, three factors are derived: the factor indicating the migration of male infant, boys and middle-aged generations, the factor indicating the migration of female infant, boys, young and middle-aged generations and the factor indicating the migration of female old-aged generation and young male generation (Table 3). Fig. 6 shows the migration pattern of each factor based upon the core matrix calculated by Equations 18 and 19. All three factors indicate the movement from the central part to the surrounding areas. However, the directions of movement are quite different by each factor. For the infant, boys and middle-aged generations, the migration from the central part to the east of the city is dominant. For the young generation, the migration from the central part to the southwest and south of the city is prevailing. The migration by the old-aged generation is strong between the central part and the east and southwest of the city. - Transformation of the central place in Miura Peninsula, Kanagawa Prefecture
Yuichi HASHIMOTO
Proceedings of the General Meeting of the Association of Japanese Geographers, 37, 164, 165, Apr. 1990
Japanese, Symposium - 水海道市における商業の地域構造 (平成元年度筑波大学学内プロジェクト研究助成研究「首都圏における農業・農村の工業化に関する地域生態論的研究」報告書)
高橋 伸夫, 山下 宗利, 平 篤志, 橋本 雄一, 松村 公明
地域調査報告, 12, 187, 214, 筑波大学, 1990
Japanese - Nodule structure of public transportation network in Koriyama city
Yuichi HASHIMOTO
Annals of Human and Regional Geography, 11, 27, 39, 筑波大学, 1989, [Lead author]
Japanese, Research institution - Central Place System in Miura Peninsula, Kanagawa Prefecture
Yuichi HASHIMOTO
Proceedings of the General Meeting of the Association of Japanese Geographers, 33, 300, 301, Apr. 1988, [Lead author]
Japanese, Symposium
Other Activities and Achievements
Books and other publications
- Economic Development in Southeast Asia and the Global Financial Crisis: From the Asian Currency Crisis to the Coronavirus Shock
Yuichi HASHIMOTO
Kokon Shoin, Dec. 2024, 9784772253598, Japanese, Scholarly book, [Single work] - High School Geography and GIS Education: Basics, Practice and Evaluation
Yuichi HASHIMOTO
Kokon Shoin, Sep. 2023, 9784772253482, v, 111p, 図版 [4] p, Japanese, [Editor] - GIS and Geo-spatial Information: Applications of ArcGIS Pro 3.0, 6th Edition
Yuichi HASHIMOTO
Kokon Shoin, 31 Oct. 2022, 4772242295, 164, Japanese, [Editor] - 地理空間情報を活かす授業のためのGIS教材 改訂版
地理情報システム学会教育委員会, 第14章 国土数値情報を利用したハザードマップ作成
古今書院, Nov. 2021, 9784772253413, iii, 94p, 図版 [8] p, Japanese, [Contributor] - GIS and Geospatial Information, 5th edition
HASHIMOTO Yuichi
Kokon Shoin, Sep. 2019, 9784772242134, 188, Japanese, Scholarly book, 無料でダウンロードできるデータを事例としてArcGISおよびArcGIS Proの活用を解説した技術書である。四訂版の内容にArcGIS Proとジオデータベースの解説を追加した。これまでArcMapのみで解説していた基盤地図情報,e-Stat,国土数値情報などダウンロードデータの地図化や,座標変換,バッファー作成,オーバーレイなどGISの基礎的技能などを,最新版のArcGIS Proでも説明している。, [Editor] - GIS teaching materials for lessons utilizing geospatial information
地理情報システム学会教育委員会編, 第14章 国土数値情報を利用したハザードマップの作成
Kokon Shoin, Oct. 2017, [Contributor] - 空間に遊ぶ (北大文学研究科ライブラリ)
田山 忠行, 林寺 正俊, 浅沼 敬子, 佐藤 健太郎, 佐々木 亨, 竹内 修一, 加藤 重広, 橋本 雄一, 川端 康弘, 田山 忠行
北海道大学出版会, 22 Jun. 2016, 4832933957, 280, [Joint work]
- 北海道南西沖地震・津波と災害復興－激甚被災地 奥尻町の20年
関 孝敏, 松田光一編, 第10章 災害とGIS
北海道大学出版会, May 2016, [Contributor] - Basics of QGIS and Utilization for Disaster Prevention
HASHIMOTO Yuichi
Kokon Shoin, 03 Oct. 2015, 4772231730, 192, [Editor]
- The changing Japanese Metropolitan Area under the Post-Growth Society
HINO Masateru, KAGAWA Takashi eds, 第4章 積雪寒冷都市・札幌における人口の都心回帰
Nakanishiya, Feb. 2015, [Contributor] - Geographical study of winter disaster evacuation in coastal cities using GIS and geo-micro data
Yuichi HASHIMOTO
Dai-ichi Life Foundation, Apr. 2013, [Single work] - 『新版 図説 大都市圏』<富田和暁・藤井 正編>
古今書院, 2010 - 『経済地理学の成果と課題 第VII集』<経済地理学会編>
日本経済評論社, 2010 - Basic Theory and Application of Geo-spatial Information
Kokon Shoin, 2009 - 『GISの理論』<村山祐司，柴崎亮介編>
古今書院, 2008 - Regional System in Tokyo Metropolitan Area
2001
Lectures, oral presentations, etc.
- The Impact of the Earthquake and Wide Area Blackout on Regional Population Spatiotemporal Distributions
Masami ONOZUKA Yuichi HASHIMOTO
The 33th Annual Meeting of the Geographic Information System Association, 27 Oct. 2024, Japanese, Oral presentation
26 Oct. 2024 - 27 Oct. 2024 - Analysis of Evacuation Behaviors in unfamiliar area Using GPS
Daisuke SHIOZAKI, Yuichi HASHIMOTO
2024 The general meeting of the Association of Japanese Geographers, 15 Sep. 2024, Japanese, Oral presentation
14 Sep. 2024 - 16 Sep. 2024, 44557751 - Disaster prevention research in snowy and cold regions
Yuichi HASHIMOTO
Urban Geography/Urban Policy Study Group 19th Seminar, 26 Jan. 2024, Japanese, Public discourse
26 Jan. 2024 - 26 Jan. 2024 - Utilization and challenges of geospatial information and GIS in high school “Chiri Sougo (geography)”
Yuichi HASHIMOTO
Ministry of Land, Infrastructure, Transport and Tourism Geospatial Information Authority of Japan Hokkaido Regional Survey Department Reiwa 5 2nd Information Sharing Meeting, 30 Nov. 2023, Japanese, Invited oral presentation
30 Nov. 2023 - 30 Nov. 2023, [Invited] - Analysis of climbing characteristics of indoor stair walking in a simulated tsunami evacuation building
Hidemi FUKADA, Yuichi HASHIMOTO
Japan Emergency Management Assosiation 17th Research Conference, 04 Nov. 2023, Japanese, Oral presentation
04 Nov. 2023 - 04 Nov. 2023 - Situation and Issues in Measures against Tsunami Disasters in the Chishima Trench Coastal Municipality - A Case Study of the City of Kushiro, Hokkaido, Japan -
Yusuke OKUNO, Yuichi HASHIMOTO
The 32th Annual Meeting of the Geographic Information System Association, 29 Oct. 2023, Japanese, Oral presentation
28 Oct. 2023 - 29 Oct. 2023 - Changes in Spatial Pattern of Population Distribution in a City aftre an Earthquake Disaster
Masami ONOZUKA, Yuichi HASHIMOTO
The 32th Annual Meeting of the Geographic Information System Association, 28 Oct. 2023, Japanese, Oral presentation
28 Oct. 2023 - 29 Oct. 2023 - Tsunami evacuation issues on the Pacific coast of Hokkaido seen using GIS and geospatial information
Yuichi HASHIMOTO
2nd Challenge Field Hokkaido Symposium “Disaster-related research in Hokkaido (1) ~Thinking about evacuation~”, 15 Feb. 2023, Japanese, Nominated symposium
15 Feb. 2023, [Invited] - Tsunami evacuation and GIS
Yuichi HASHIMOTO
2020 Symposium on Resilient Society and Community Co-creation "Damage Assumption and Mitigation of Trench Earthquakes", 02 Nov. 2022, Japanese, Nominated symposium
02 Nov. 2022 - 02 Nov. 2022, [Invited] - Utilization of VR Evacuation Training System using ICT and WebVR technology in geographc education for university
Daisuke SHIOZAKI, Yuichi HASHIMOTO
The 31th Annual Meeting of the Geographic Information System Association, 30 Oct. 2022, Japanese, Oral presentation
29 Oct. 2022 - 30 Oct. 2022 - CHANGES IN SPATIOTEMPORAL PATTERN OF POPULATION DISTRIBUTION IN A CITY JUST AFTER AN EARTHQUAKE DISASTER -A case study on Sapporo after the Hokkaido Eastern Iburi earthquake -
Masami ONOZUKA, Yuichi HASHIMOTO
The 31th Annual Meeting of the Geographic Information System Association, 29 Oct. 2022, Japanese, Oral presentation
29 Oct. 2022 - 30 Oct. 2022 - Spatial Characteristics of Land Use and Tsunami Disaster Risk in Hakodate City
Takeshi KAWAMURA, Yuichi HASHIMOTO
The 31th Annual Meeting of the Geographic Information System Association, 29 Oct. 2022, Japanese, Oral presentation
29 Oct. 2022 - 30 Oct. 2022 - A spatial analysis of evacuation from tsunami in Tomokomai city, Hokkaido
Nagomi MITSUI, Yuichi HASHIMOTO
The 31th Annual Meeting of the Geographic Information System Association, 29 Oct. 2022, Japanese, Oral presentation
29 Oct. 2022 - 30 Oct. 2022 - nalysis of Behaviors in Simulated Group Evacuations Due to Tsunamis Caused by Earthquakes in The Northern Part of The Japan Trench - A Case Study of The City of Tomakomai, Hokkaido, Japan -
Yusuke OKUNO, Yuichi HASHIMOTO
The 31th Annual Meeting of the Geographic Information System Association, 29 Oct. 2022, Japanese, Oral presentation
29 Oct. 2022 - 30 Oct. 2022 - Change in the Difficult-to-evacuate Zone due to updated Tsunami Inundation Assumptions along the Pacific Coast in Hokkaido
Yuichi HASHIMOTO
The 31th Annual Meeting of the Geographic Information System Association, 29 Oct. 2022, Japanese, Oral presentation
29 Oct. 2022 - 30 Oct. 2022 - Land use change and tsunami disaster risk in Muroran City
Takeshi KAWAMURA, Yuichi HASHIMOTO
The General Meeting of the AJG Autumn 2022, 24 Sep. 2022, Japanese, Oral presentation
23 Sep. 2022 - 25 Sep. 2022 - GIS education of “Chiri-sogo (Geography)” as a high school subject
Yuichi HASHIMOTO
The General Meeting of the AJG Autumn 2022, 24 Sep. 2022, Japanese, Nominated symposium
23 Sep. 2022 - 25 Sep. 2022, [Invited] - Geospatial study of population distribution changes in cities after a disaster using mobile phone demographics Case of the 2018 Hokkaido Eastern Iburi Earthquake
Masami ONOZUKA, Yuichi HASHIMOTO
2022年度 北海道地理学会 春季学術大会, 26 Jun. 2022, Japanese, Oral presentation
26 Jun. 2022 - 26 Jun. 2022 - Tsunami disaster caused by a huge earthquake along the Japan Trench and Chishima Trench assumed in Tomakomai City
Takaeshi KAWAMURA, Yuichi HASHIMOTO
2022年度 北海道地理学会 春季学術大会, 26 Jun. 2022, Japanese, Oral presentation
26 Jun. 2022 - 26 Jun. 2022 - Science for tsunami evacuation due to a huge earthquake along the Kuril Trench
Yuichi HASHIMOTO
2021 Earthquake and Volcano Research and Observation Center Symposium: Giant Earthquake and Tsunami-Preparing for a Giant Earthquake along the Chishima Trench-, 21 Mar. 2022, Japanese, Nominated symposium
21 Mar. 2022 - 21 Mar. 2022 - A spatial analysis of evacuation from tsunami in the coastal area of the Sea of Japan, Hokkaido
Yuka KUDO, Yuichi HASHIMOTO
The 30th Annual Meeting of the Geographic Information System Association, 30 Oct. 2021, Japanese, Oral presentation
31 Oct. 2021 - 31 Oct. 2021 - Utilization of BIM / CIM with GIS and activities of GIS community in Hokkaido
Tatsuya MIYOSHI, Yuichi HASHIMOTO
The 30th Annual Meeting of the Geographic Information System Association, 31 Oct. 2021, Japanese, Oral presentation
30 Oct. 2021 - 31 Oct. 2021 - Development of Tsunami Evacuation Simulation Using Agent Model - A Case Study of Vertical Evacuation of Tsunami Shelter Building in Kushiro City -
Hidemi FUKADA, Yuichi HASHIMOTO
The 30th Annual Meeting of the Geographic Information System Association, 30 Oct. 2021, Japanese, Oral presentation
30 Oct. 2021 - 31 Oct. 2021 - Analysis of Group Behaviors in Quasi tsunami Evacuations Focusing on Walking Speed
Yusuke OKUNO, Yuichi HASHIMOTO
The 30th Annual Meeting of the Geographic Information System Association, 30 Oct. 2021, Japanese, Oral presentation
30 Oct. 2021 - 31 Oct. 2021 - Intra-urban Population Changes in the Event of Disaster using Mobile Phone Demographics: a Case Study of the 2018 Hokkaido Eastern Iburi Earthquake
Masami ONOZUKA, Yuichi HASHIMOTO
The 30th Annual Meeting of the Geographic Information System Association, 30 Oct. 2021, Japanese, Oral presentation
30 Oct. 2021 - 31 Oct. 2021 - Spatial analysis of evacuation behavior using VR evacuation training system in tourist site
Daisuke SHIOZAKI, Yuichi HASHIMOTO
The 30th Annual Meeting of the Geographic Information System Association, 30 Oct. 2021, Japanese, Oral presentation
30 Oct. 2021 - 31 Oct. 2021 - Issues for disaster evacuation of childcare facilities in Tomakomai City, Hokkaido
Nagomi MITSUI, Yuichi HASHIMOTO
The 30th Annual Meeting of the Geographic Information System Association, 30 Oct. 2021, Japanese, Oral presentation
30 Oct. 2021 - 31 Oct. 2021 - Changes in Spatial Patterns of Land Use and Tsunami Disaster Risk of Port Cities
Takeshi KAWAMURA, Yuichi HASHIMOTO
The 30th Annual Meeting of the Geographic Information System Association, 30 Oct. 2021, Japanese, Oral presentation
30 Oct. 2021 - 31 Oct. 2021 - Preparing for a huge earthquake along the Japan Trench and the Kuril Trench using geospatial information
Yuichi HASHIMOTO
Hokkaido Industry-Academia-Government Research Forum 9th Disaster Prevention and Mitigation Seminar, 19 Oct. 2021, Japanese, Keynote oral presentation
19 Oct. 2021, [Invited] - Utilization of GIS in disaster prevention classes
Yuichi HASHIMOTO
Hokkaido Geographical Society 2021 Autumn Meeting (Symposium "Thinking about the handling of GIS and disaster prevention in high school geography synthesis"), 17 Oct. 2021, Japanese, Invited oral presentation
17 Oct. 2021, [Invited] - Issues of evacuation of childcare facilities in the event of a disaster in Tomakomai City
Nagomi MITSUI, YuichiHASHIMOTO
Hokkaido Geographical Society 2021 Spring Meeting, 27 Jun. 2021, Japanese, Oral presentation
27 Jun. 2021 - 27 Jun. 2021 - Spatial analysis of evacuation during a compound disaster in Rumoi City
Yuka KUDO, Yuichi HASHIMOTO
Hokkaido Geographical Society 2021 Spring Meeting, 27 Jun. 2021, Japanese, Oral presentation
27 Jun. 2021 - 27 Jun. 2021 - Spatial analysis of ski resort development and ownership changes in the Niseko area
Daisuke Shiozaki, Yuichi Hashimoto
The General Meeting of the Association of Japanese Geographers, Spring 2021, 28 Mar. 2021, Japanese, Oral presentation
26 Mar. 2021 - 28 Mar. 2021, 30916583 - Issues of evacuation movement during the snowy season as seen by GIS
Yuichi HASHIMOTO
2020 Disaster Prevention and Japan Revitalization Symposium, 24 Nov. 2020, Japanese, Invited oral presentation
24 Nov. 2020 - 24 Nov. 2020, [Invited] - GIS community activities in Hokkaido during the COVID-19 infection period
Tatsuya MIYOSHI, Yuichi HASHIMOTO
The 29th Annual Meeting of the Geographic Information System Association, 25 Oct. 2020, Japanese, Oral presentation
23 Oct. 2020 - 25 Oct. 2020 - A spatial analysis of difficult-to-evacuate area in a heavy snow and cold city on the complex humanitarian emergencies -A case study of Rumoi city, Hokkaido-
Yuka KUDO, Yuichi HASHIMOTO
The 29th Annual Meeting of the Geographic Information System Association, 24 Oct. 2020, Japanese, Oral presentation
23 Oct. 2020 - 25 Oct. 2020 - Spatial analysis of real estate in ski resort area using the real estate registration data
Daisuke SHIOZAKI, Yuichi HASHIMOTO
The 29th Annual Meeting of the Geographic Information System Association, 24 Oct. 2020, Japanese, Oral presentation
23 Oct. 2020 - 25 Oct. 2020 - An Analysis of Trajectory Data for Group Evacuation Behavior from Tsunami Disaster
Yusuke OKUNO, Daisuke SHIOZAKI, Yuichi HASHIMOTO
The 29th Annual Meeting of the Geographic Information System Association, 24 Oct. 2020, Japanese, Oral presentation
23 Oct. 2020 - 25 Oct. 2020 - Estimation of Evacuation Behavior after the Earthquake with Electric Power Failures by Using Spatial Statistics of Mobile Phones
Masami ONOZUKA, Yuichi HASHIMOTO
The 29th Annual Meeting of the Geographic Information System Association, 24 Oct. 2020, Japanese, Oral presentation
23 Oct. 2020 - 25 Oct. 2020 - Spatioan analysis of real estat in the northern Niseko-Hirafu using the real property registration data
Daisuke SHIOZAKI, Yuichi HASHIMOTO
The general meeting of the Association of Japanese Geographers, 27 Mar. 2020, Japanese, Oral presentation
27 Mar. 2020 - 28 Mar. 2020 - Issues of evacuation movement during the snowy season as seen by GIS
Yuichi HASHIMOTO
Earthquake / Volcano Eruption Prediction Research Council Planning Promotion Subcommittee Disaster Prevention Literacy Subcommittee Research Results Report Meeting, 21 Feb. 2020, Japanese, Others
21 Feb. 2020 - 21 Feb. 2020 - 北海道北部における買い物困難圏と移動販売車の果たす役割
小野塚仁海, 橋本雄一
2019年度日本地理学会秋季学術大会, 21 Sep. 2019, Japanese, Oral presentation
新潟大学（五十嵐キャンパス）, [Domestic Conference] - 港湾都市の津波浸水想定地域 における施設立地の変化
川村 壮, 橋本 雄一, 戸松 誠, 竹内 慎一
2019年度日本地理学会秋季学術大会, 21 Sep. 2019, 新潟大学（五十嵐キャンパス）, Japanese, Oral presentation
[Domestic Conference] - 汎用・基盤的 データの存続と地理教育
橋本 雄一
2019年度日本地理学会春季学術大会, 21 Mar. 2019, Japanese, Nominated symposium
専修大学（生田キャンパス）, [Domestic Conference] - GISとマイクロジオデータによる 積雪寒冷地の人文地理学的研究
橋本 雄一
北海道大学電子科学研究所附属社会創造数学研究センター 公開シンポジウム 〜数理連携（知のオープンファシリティ）の現状と未来〜, 24 Aug. 2018, Japanese, Invited oral presentation
[Invited], [International presentation] - Spatiotemporal analysis of evacuation possibility of the inhabitants every building considered arrival time for tsunami -A case of Tomakomai city, Japan -
KAWAMURA Takeshi, HASHIMOTO Yuichi
7th August 2018, IGU Regional Conference, Quebec City, Canada, 08 Aug. 2018, English, Oral presentation
[International presentation] - A population change in difficult-to-evacuate areas of tsunami disaster in a heavy snow and cold city
NAITO Takehiro, HASHIMOTO Yuichi
7th August 2018, IGU Regional Conference, Quebec City, Canada, 07 Aug. 2018, English, Oral presentation
[International presentation] - A geographical study of ski resort development and land use change in Niseko area, Japan
SHIOZAKI Daisuke, HASHIMOTO Yuichi
7th August 2018, IGU Regional Conference, Quebec City, Canada, 07 Aug. 2018, English, Oral presentation
[International presentation] - 高校地理における防災GISの活用
橋本 雄一
G空間EXPO 北海道地理空間フォーラムin札幌, 21 Jul. 2018, Japanese, Invited oral presentation
[Invited], [Domestic Conference] - 北海道の津波防災へのGISの挑戦
橋本 雄一
G空間EXPO 北海道地理空間フォーラムin札幌, 19 Jul. 2018, Japanese, Invited oral presentation
[Domestic Conference] - 地理空間情報を用いた 防災の人文地理学的研究
橋本 雄一
対流型国土に向けたジオ・エデュケーション研究会, 25 May 2018, Japanese, Invited oral presentation
[International presentation] - Utilization of geospatial information in tsunami evacuation research in snowy and cold region
Yuichi HASHIMOTO
Hokkaido / Disaster Prevention and Disaster Mitigation Relay Symposium-Disaster Prevention and Mitigation for New Stages-, 28 Nov. 2016, Japanese, Public discourse
28 Nov. 2016 - 28 Nov. 2016, [Invited] - Tsunami evacuation and GIS
Yuichi HASHIMOTO
Hokkaido / Disaster Prevention / Disaster Mitigation Relay Symposium 2015-Considering Disaster Prevention / Mitigation for Sudden Disasters- (Program C / Kushiro City Venue), 23 Oct. 2015, Japanese, Keynote oral presentation
23 Oct. 2015 - 23 Oct. 2015, [Invited] - A Geographical Study of Ski Resort Development in Niseko Area, Hokkaido
Daisuke SHIOZAKI, Yuichi HASHIMOTO
Proceedings of the General Meeting of the Association of Japanese Geographers, 18 Sep. 2015, Japanese, Oral presentation
18 Sep. 2015 - 20 Sep. 2015 - マイクロジオデータからみた積雪寒冷地の都市変化と災害リスク (2014年大会特別研究発表 : 報告・討論の要旨および座長の所見)
橋本 雄一, 藤井 正, 碓井 照子
人文地理, 2015, Japanese - Welfare for the elderly in cities from the perspective of disaster risk in snowy and cold regions
Yuichi HASHIMOTO
Hokkaido Development Association 10th Grant Research Presentation "Snow Economy and Volunteer System", 09 Dec. 2014, Japanese, Invited oral presentation
09 Dec. 2014 - 09 Dec. 2014, [Invited] - 北海道沿岸における津波災害リスクに関する空間分析(2)―積雪寒冷地における港湾都市の津波災害に関する地理学的研究―
川村壮, 橋本雄一
日本地理学会発表要旨集, 10 Sep. 2014, Japanese - The Temporal and Spatial Structure of Retail Activities in Sapporo City : 1976-2002
KYOKAME Satoshi, HASHIMOTO Yuichi
日本地理学会発表要旨集 = Proceedings of the General Meeting of the Association of Japanese Geographers, 10 Mar. 2006, Japanese - Commercial Geography and GIS
HASHIMOTO Yuichi
日本地理学会発表要旨集 = Proceedings of the General Meeting of the Association of Japanese Geographers, 29 Mar. 2000, Japanese, Nominated symposium
26 Mar. 2000 - 29 Mar. 2000, [Invited] - Developing an intellectual property system in line with the expansion of multinational companies: The case of Malaysia
Yichi HASHIMOTO
The General Meeting of The Association of Japanese Geographers 1999, 27 Mar. 1999, Japanese, Oral presentation
26 Mar. 1999 - 27 Mar. 1999 - Maritime Development in Malaysia
HASHIMOTO Yuichi
日本地理学会発表要旨集 = Proceedings of the General Meeting of the Association of Japanese Geographers, 26 Sep. 1998, Japanese, Nominated symposium
25 Sep. 1998 - 28 Sep. 1998 - The Organization of Database for Building Use in Sapporo City.
Yuichi HASHIMOTO
Japanese Geographical Society 1998 Spring Academic Conference, 29 Mar. 1998, Japanese, Nominated symposium
28 Mar. 1998 - 29 Mar. 1998, [Invited] - Consideration on the integration of vector data and raster data : Using the analysis of agricultural land use in the Tokachi Plain and the surrounding natural environment as an example
KIMURA Keiji, HASHIMOTO Yuichi
The general meeting of the Association of Japanese Geographers, 29 Mar. 1996, Japanese, Nominated symposium
28 Mar. 1996 - 30 Mar. 1996 - Attempt to construct a joint database using a geographic information system
Yuichi HASHIMOTO
The general meeting of the Association of Japanese Geographers, 29 Mar. 1996, Japanese, Nominated symposium
28 Mar. 1996 - 30 Mar. 1996, [Invited] - Spatial structure of fiscal finance in Ibaraki Prefecture
Nobuo TAKAHASHI, Yuichi HASHIMOTO, Hiroshi KASHIMA
The General Meeting of The Association of Japanese Geographers 1993, 10 Oct. 1993, Japanese, Oral presentation
10 Oct. 1993 - 11 Oct. 1993 - Spatio-temporal structure of retail industry in the Tokyo metropolitan area
Yuichi HASHIMOTO
The general meeting of the Association of Japanese Geographers and The Tohoku Geographical Society 1992, 10 Oct. 1992, Japanese, Oral presentation
10 Oct. 1992 - 13 Oct. 1992 - Characteristics of population migration in Tsukuba City
Yuichi HASHIMOTO, Hiroshi KASHIMA
The General Meeting of The Association of Japanese Geographers 1992, 02 Apr. 1992, Japanese, Oral presentation
01 Apr. 1992 - 04 Apr. 1992 - Transformation of retail centers on the periphery of metropolitan areas : Case study of Miura Peninsula, Kanagawa Prefecture
Yuichi HASHIMOTO
The General Meeting of The Association of Japanese Geographers 1991, 04 Apr. 1991, Japanese, Oral presentation
03 Apr. 1991 - 06 Apr. 1991 - Transformation of the central place in Miura Peninsula, Kanagawa Prefecture
Yuichi HASHIMOTO
The general meeting of the Association of Japanese Geographers 1990, 02 Apr. 1990, Japanese, Oral presentation
02 Apr. 1990 - 05 Apr. 1990 - Central Place System in Miura Peninsula, Kanagawa Prefecture
Yuichi HASHIMOTO
The General Meeting of The Association of Japanese Geographers 1988, 05 Apr. 1988, Japanese, Oral presentation
04 Apr. 1988 - 06 Apr. 1988
Affiliated academic society
Research Themes
- 港湾都市における津波率先避難の行動モデル構築とシミュレーション分析
科学研究費助成事業
01 Apr. 2023 - 31 Mar. 2026
深田 秀実, 橋本 雄一
日本学術振興会, 基盤研究(C), 小樽商科大学, 23K00969 - Model building for tsunami evacuation of the Kuril Trench Earthquake during blackout and whiteout
Grants-in-Aid for Scientific Research
01 Apr. 2022 - 31 Mar. 2025
橋本 雄一, 深田 秀実, 塩崎 大輔
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C), Hokkaido University, 22K01040 - Construction and Simulation Analysis of Decision Making Model for Tsunami Initiative Evacuation in Port City
Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
01 Apr. 2020 - 31 Mar. 2023
深田 秀実, 橋本 雄一
日本政府の観光立国政策により，国内外の観光者数は増加傾向にある．一方，近年，地震や台風等による自然災害が連続して発生しており，観光者が被災している．そのため，観光分野においても，防災・減災対策が重要となっている．
そこで，本研究では，北海道を代表する港湾観光都市である小樽市の運河周辺エリアを研究フィールドとして，津波に対する率先避難行動に着目し，地理不案内な観光者の津波避難行動意思決定モデルを構築して，そのモデルをもとに，エージェント・シミュレーション分析を用いて，観光従事者の率先避難行動が，観光者の津波避難行動に対して，どのような影響を及ぼすのか，その効果や課題を明らかにすることを目的とする．
具体的には，観光地の地理を理解している地元店舗の観光従事者が，津波に伴う率先避難を行った場合，地理不案内な観光者の行動に対して，どのような影響を及ぼすのか，その効果や課題をマルチ・エージェント・シミュレーション（Multi-Agent Simulation：以下，MAS）を用いて明らかにしたい．ここで率先避難とは，「津波警報等の危険情報に接したとき，自ら率先して危険を避ける行動を起こすこと．その行動によって，周囲の人にも同様の行動を促し，危険回避行動を起こさせること」と定義する．
令和3年度は，港湾観光地への旅行経験者（N=499：近年大地震が比較的少ない日本海側に居住）を対象に，Web調査を用いて，港湾観光地における津波避難に関する意識調査を行った．その結果，観光中の津波警報発表時において，地元商店の店員や警官等の「声がけ」により避難率が向上する傾向があることが分かった．
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C), Otaru University of Commerce, 20K12394 - Tsunami evacuation model and geospatial information system related the earthquake around Chishima Trench
Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
01 Apr. 2019 - 31 Mar. 2022
Hashimoto Yuichi
This study assumes a tsunami caused by a huge earthquake whose epicenter is the Kuril Trench, which has been pointed out to be highly dangerous, and constructs an information integration system for modeling tsunami evacuation behavior in coastal cities using GIS and micro-geodata. moreover the issues related to disaster prevention were clarified. For that purpose,(1) Optimal distribution model of evacuation information, (2) Decision-making model for accepting evacuation information and selecting evacuation destinations, (3) Empirical space model for horizontal movement to evacuation sites (including evacuation buildings), (4) Simulation model for vertical movement in the evacuation building, (5) Stay model inside the evacuation site, and considered them in cooperation with each other. In addition, since the target area is a snowy cold region where the cold in winter is severe, seasonal differences were taken into consideration in the analysis.
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C), Hokkaido University, 19K01166 - 連鎖複合型災害現象のメカニズムと人口急減社会での適応策
Grants-in-Aid for Scientific Research
Apr. 2018 - Mar. 2021
OSANAI Nobutomo
Japan Sciety for the Promotion of Science, Competitive research funding - 観光空間との相互作用を考慮した観光回遊モデルの構築とシミュレーション分析
Grants-in-Aid for Scientific Research
Apr. 2017 - Mar. 2020
FUKADA Hidemi
Japan Sciety for the Promotion of Science, Competitive research funding - 津波による最大リスク評価手法の開発と防災対策の実証的展開
重点研究
Jun. 2018 - Mar. 2019
田中 義克
北海道立総合研究機構建築研究本部北方建築総合研究所, Competitive research funding - マイクロジオデータを用いた観光行動モデルの構築とシミュレーション分析
Grants-in-Aid for Scientific Research
Apr. 2014 - Mar. 2017
FUKADA Hidemi
Japan Sciety for the Promotion of Science, Competitive research funding - Geographical study on evacuation during tsunami disaster during snowy season in Hokkaido coastal cities using GIS
Hokkaido Development Association Research Grant
Apr. 2015 - Mar. 2016
Hokkaido Development Association, Granted research, Hokkaido Development Association, Principal investigator - 持続可能な都市空間の形成に向けた都市地理学の再構築
Grants-in-Aid for Scientific Research
Apr. 2012 - Mar. 2015
HINO Masateru
Japan Sciety for the Promotion of Science, Competitive research funding - GISを援用した北海道沿岸都市における積雪期の津波災害時避難に関する地理学的研究
研究助成金
Apr. 2012 - Mar. 2013
橋本 雄一
北海道開発協会, Principal investigator, Competitive research funding - GISとジオマイクロデータを用いた臨海都市における冬季災害時避難の 地理学的研究
研究助成金
Apr. 2012 - Mar. 2013
橋本 雄一
一般財団法人 第一生命財団 都市のしくみとくらし研究所, Principal investigator, Competitive research funding - ジオマイクロデータを用いた積雪寒冷地都市内部における冬季災害時避難の地理学的研究
Grants-in-Aid for Scientific Research
Apr. 2011 - Mar. 2013
HASHIMOTO Yuichi
Japan Sciety for the Promotion of Science, Principal investigator, Competitive research funding - 積雪寒冷地域のヴァルネラビリティからみた都市空間の高齢者福祉－地理空間情報を援用した歩行空間の分析－
研究助成金
Apr. 2009 - Mar. 2010
橋本 雄一
一般財団法人 北海道開発協会, Principal investigator, Competitive research funding - 火湾北岸縄文エコ・ミュージアム構想とサテライト形成
Grants-in-Aid for Scientific Research
Apr. 2006 - Mar. 2010
KOSUGI Yasushi
Japan Sciety for the Promotion of Science, Competitive research funding - 学校教育・社会教育における地理情報システムの利用に関する研究
Grants-in-Aid for Scientific Research
Apr. 2004 - Mar. 2008
ITO Satoru
Japan Sciety for the Promotion of Science, Competitive research funding - 凍結防止剤使用環境下における交通施設構造物のLCC低減技術に関する研究
Grants-in-Aid for Scientific Research
Apr. 2004 - Mar. 2007
UEDA Tamon
Japan Sciety for the Promotion of Science, Competitive research funding - 社会資本ストックの蓄積と産業クラスターの形成からみた北海道経済の空間構造
Grants-in-Aid for Scientific Research
Apr. 2002 - Mar. 2005
HASHIMOTO Yuichi
Japan Sciety for the Promotion of Science, Principal investigator, Competitive research funding - わが国の初等・中等教育における地理情報システムの活用に関する研究
Grants-in-Aid for Scientific Research
Apr. 2001 - Mar. 2005
ITO Satoru
Japan Sciety for the Promotion of Science, Competitive research funding - Development of Highway Maintenance System using Deterministic Model for Structure Degradation in Cold Region
Grants-in-Aid for Scientific Research
2002 - 2004
KAGAYA Seiichi, OBATA Takashi, NAWA Toyoharu, SATO Yasuhiko, HASHIMOTO Yuichi, HAGIWARA Toru
The influences from dispersion of antifireezing admixture, toward function of road transport and toward deterioration of road facilities, are analyzed in this study. This study aimes for the enhancement of systems of operation and maintenance for dealing with the influences. Firstly, an examination on the technologies of operation and maintenance for road network which support transport system is made. Then, a Web-based database system which can capture the real road traffic situation in winter, both temperaly and spatialy, is developed. Finally, an examination on the optimal amount of antifreezing admixture dispersion problem considering the changes in modal shares made by passengers is also carried out. An efficient usage of antifreezing admixture will be brought out by both technologies regarding the effective road maintenance, and regarding the control of passengers' travel behaviors determined by characteristics of transport network.
A detailed mechanism of deterioration in concrete structure caused by antifreezing admixture is captured. An examination on the strengthening resistibility to penetration of sodium into cement, which is known as main material of concrete, is carried out, new tangible method for that is then developed. An examination on priority decision making system for maintenance and repair works is carried out by taking steel structure as an example. Furthermore, a development of diversification risk system targeted to destruction of structure, by taking disaster as am example, is made an attemp. Those works will make it possible to develop both structures which are hard to be deteriorated by sodium, and well-designed structure management system.
Some important achievements, which could contribute to a development of road management system, have been made in this study by assuming usage of antifreezing admixture. However, a development of comprehensive management system comprised of technologies mentioned above are intended for in the first stage, only indication on the direction toward the comprehensive system is made against our objectives. Some examinations on what kinds of effects are botained by organizing the technologies dealt with in the present study will be made in the fixture.
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (A), HOKKAIDO UNIVERSITY, 14208038 - Sustainable Farming System and the Effect on the Potential of Food Supply
Grants-in-Aid for Scientific Research
1997 - 1999
KUROKAWA Isao, IIZAWA.RIICHIRO, KONDO Takunri, OSANAMI Fumio, HASHIMOTO Yuuichi, SHIGA Eiichi
There exists many Farms and Agricultural Cooperatives which have been practiced or introduced partly organic farming for a long time. The purpose of this study is to investigate the typical farms among those and evaluate them from the point of farm managerial economics . The evaluation from the point of pesticide and fungicide control, energy input-output analysis and environmental externality was conducted cooperated with the specialist.
In case of dairy farming, Low-output dairy farming which utilize grazing grass land is most sustainable system. The farm survey shows that rice farming has more possibility to improve the sustainability by developing the substitution farm labor to farm machinery in weeding and pesticide, and by lowering the price of 'organic' input which substitute for agricultural chemical. In case of Upland-farming, whose farm size is larger, precision farming method helped to manage farm land, especially in the area where the traditional cropping rotation system affected by introduction of more intensive crops such as vegetables.
Information technology such as crop disease forecasting system is very effective to reduce use of agricultural chemicals GIS has proved to be a very effective to monitor the effects of the farmer's activity on environment and to accumulate the information of sustainable farming system. The effectiveness of regulation for the organic farm products standard and other economic policy means such as tax and subsidy to promote sustainable agriculture are also discussed.
It is still discussing matter how much the sustainable farming system affect on the food supply, because it depend rather on the market situation. Not-utilized farm resource such as paddy straw, forestry land and new information technology are worth to consider as "new" resources to increase food production possibility.
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (A), HOKKAIDO UNIVERSITY, 09356006 - 地理情報システムGISを活用した非集計データの時空間分析
科学研究費助成事業
1997 - 1997
村山 祐司, 張 長平, 橋本 雄一, 篠原 秀一, 森本 健弘, 須山 聡
本研究の目的は,非集計ミクロデータとGIS(地理情報システム)をリンクさせ一体的に計量分析を行う有効性を地理学的観点から検討することにある.
この課題を達成するため,6人の地理学者が,(1)「時空間データベースの構築とその利用」,(2)「GISによる時空間解析」,(3)「インターネットGISの実現」の3グループに分かれて研究を行った.
(1)のグループは,既存の公表統計・集計資料だけでなく,アンケート,聞き取り,観察などによって得られた未公表,あるいは私的な量的・質的データを体系的に整理し,地理行列化する手順について検討するとともに,それを用いて実証分析を行った.
(2)のグループは,GISを援用して,ミクロ統計データを用いた都市内部建物利用の時空間データベースを作成し,それに分析・表示用ツールを付加することによって,都市政策決定のための支援システムを構築した.さらに,町丁・字のような,自由な境界線をもつ不規則な小地区データの空間的自己相関分析を通して,ミクロデータの空間単位の最適な設置問題にアプローチした.このグループの最終目的は,GISによる時空間解析のモデュール化であった.
(3)のグループでは,入手が困難な小地域統計とその地図データベースをネットワークで提供し,ユーザが自在に時空間分析できるシステムの構築をめざした.本年度は実験的にインターネット上で明治時代の地域統計を地図化するOpen-GISを作成した.
日本学術振興会, 重点領域研究, 筑波大学, 09206101 - 大都市圏中心部における土地利用の変化-札幌の事例
科学研究費助成事業
1995 - 1995
橋本 雄一
本研究は,大都市圏中心部における内部構造の変容を解明することを目的とした.そのために,高度経済成長期以降に生起した土地利用の時系列的変化を明らかにた上で,人口分布との関連について解析を行った.本研究の対象地区は札幌市のDIDであり,1980年,1985年,1991年の3年次を研究対象年次とした.まず,土地利用の指標として建物用途別床面積を取り上げ分析を行った結果,商業施設や事務所の増加地帯が中心部から周辺部へ向かって拡大していることが明らかになった.それに伴い,都心周辺地区に位置する住宅地区では事務所併用住宅や商業施設併用住宅が増加しており,当該地区では機能混在化の様相を呈していた.しかし,都心から離れた住宅地区では,このような変化は見られず,単一機能に特化した地区を構成していた.次に,この建物利用変化に対して,建物構造種別床面積のデータを重ね合わせた結果,建物変化の著しい都心周辺部では木造建築物が耐火建築物へと変化しているのに対し,都心から離れた住宅地では木造建築物の比率が比較的高いままであった.このことから,大都市圏中心部においては,都心から周辺に向かって建物の新陳代謝が緩やかになっていることが分かった.最後に,これらの変化と人口との関連について考察すると,当該変化は人口の集積域が縁辺へと拡大するのを追いかけるように起こっていることが明らかになった.上記結果の内容は従来の研究でも報告されていたが,本研究ではそれを今までになく高い精度で解明した.本研究のように行政データを地理情報システムで解析することにより,都市構造の把握を迅速かつ高精度に行うことが可能である.
日本学術振興会, 奨励研究(A), 北海道大学, 07780119 - 東京大都市圏における中心地システムの変容:1969-1991
科学研究費助成事業
1994 - 1994
橋本 雄一
本研究は、高度経済成長期以降、東京大都市圏において都市内部の中心地が遂げた変化を,小売業機能の分布から明らかにすることを目的とする。そのために,二つのスケールにおいて分析を行う。第一の分析では,市町村を地区単位として,大都市圏全体における小売業の立地変動を明らかにする。第二の分析では,大都市圏周辺部に位置する市町村を対象地域とし,機能階次と中心地階層の変化を明確にする。最後に,事例市町村間に見られる小売業中心地の再編過程の違いを,大都市圏全体の小売業機能の時空間構造と結び付けて考察することにより,大都市圏における中心地システムの変化についてのメカニズムを解明する。
分析の結果,まず大都市圏に関しては,中心部への近接性によって各市町村の保有する相対的中心性に差が存在するものの,機能集積域が大都市圏中心部から周辺部へ進行したことにより,その差は平均化の方向に向かっていることが明らかになった。次に,事例市町村に関しては,いずれの中心地システムも,機能集積に伴い機能階次および中心地階層の再編が行われており,それは最高位中心地を核とした機能集積域の拡大によるものであることが判明した。この中心地システムの再編成には,大都市圏中心部への近接性に応じたタイムラグが認められ,大都市圏中心部への近接性が高い市町村内部ほど,機能集積域の拡大が顕著に進行していた。
以上の分析から,機能集積域の拡大が,市町村間でも市町村内部でも進行しており,その結果,大都市圏における小売業格差は縮小していることが明らかになった。当該動向を中心地動態論の立場で解釈すると,大都市圏内部における中心地システムは周辺地域で生じる超過利潤を消滅させるように変化すると考えられる。
日本学術振興会, 奨励研究(A), 北海道大学, 06780127
Educational Organization
- Bachelor's degree program, School of Humanities and Human Sciences
- Master's degree program, Graduate School of Humanities and Human Sciences
- Doctoral (PhD) degree program, Graduate School of Humanities and Human Sciences
