研究者データベース

長谷川 浩平(ハセガワ コウヘイ)
水産科学研究院 海洋生物資源科学部門 海洋計測学分野
助教

基本情報

所属

  • 水産科学研究院 海洋生物資源科学部門 海洋計測学分野

職名

  • 助教

学位

  • 工学博士(東京海洋大学)

J-Global ID

研究分野

  • 自然科学一般 / 大気水圏科学

研究活動情報

論文

  • 内田圭一, 小川大道, 長谷川浩平, 宮本佳則, 野呂英樹, 和田由香, 秋山清二
    日本水産学会誌 84 1 14 - 22 2018年 [査読有り][通常論文]
     
    As the resource management of bluefin tuna Thunnus orientalis is becoming increasingly important, a new technology for set-net fisheries to separate young bluefin tuna from other catches is needed. If behavioral diŠerences in a set net between bluefin tuna and other species could be detected, it would help to develop such new technology. In this study, we used an ultrasonic telemetry system to study the behavior of young bluefin tuna and yellowtail Seriola quinqueradiata in a set net. The results showed that bluefin tuna swim back and forth between the second bag net and the first bag net, while yellowtail swim all the way into the final net. These behavioral diŠerences could be used in the development of a technology to separate young bluefin tuna from other catches in set nets.
  • 長谷川浩平, 内田圭一, 宮本佳則
    海洋音響学会誌 44 1 1 - 12 2017年01月 [査読有り][通常論文]
  • 宮本佳則, 内田圭一, 甘糟和男, 長谷川浩平, Yuttana Theparoonart, Monton Anongponyoskun, 石川智士, Yap Minlee, 笹倉豊喜
    海洋音響学会誌 43 2 71 - 78 2016年04月 [査読有り][通常論文]
  • 長谷川浩平, 宮本佳則, 内田圭一
    Fisheries Science 82 2 213 - 223 2016年03月 [査読有り][通常論文]
     
    A system for real-time monitoring the depth of small fishing gear was developed using acoustic telemetry to improve the efficiency of fishing operations. The system consisted of an acoustic transmitter (pinger), an omni-directional hydrophone with a depressor, and a receiver. Using a pinger equipped with a depth sensor, a fisherman can confirm whether the fishing gear is at the intended depth. The battery of the developed pinger can be replaced easily for repeated use. The performance of the system was evaluated in a field experiment. The accuracy of measured depth was 0.4 m and was constant even if the pinger was moving. In the experiment, the system could successfully monitor the pinger depth every several second. The system was implemented in hairtail trolling to examine its effectiveness. The implementation experiments revealed some issues with the system, such as the effect of signal reflections or the installation method of the hydrophone. However, the system could monitor the depth of the fishing gear continuously in real time and it operated successfully without any problem during the fishing operation. Application of the developed system is expected to aid fishermen in adjusting the gear depth easily and accurately.
  • 長谷川浩平, 宮本佳則, 内田圭一, 柿原利治
    海洋音響学会誌 39 4 163 - 172 2012年10月 [査読有り][通常論文]

書籍

  • Guide to operation of acoustic data collection system (AQFI-1301) for shallow waters
    Y. Miyamoto, K. Uchida, Y. Theparoonrat, M. Anongponyoskun, K. Thongsila, Y. Minlee, T. Sasakura, K. Hasegawa (担当:共著)
    Research Institute for Humanity and Nature 2017年02月 (ISBN: 9784906888351)

講演・口頭発表等

  • 不規則配列を適用した送受波器のビーム特性シミュレーション  [通常講演]
    長谷川 浩平
    海洋音響学会2017年度研究発表会 2017年05月 口頭発表(一般)

その他活動・業績

教育活動情報

主要な担当授業

  • 海洋音響学
    開講年度 : 2019年
    課程区分 : 学士課程
    開講学部 : 水産学部
    キーワード : 超音波,魚群探知機,ソナー,流向流速計,海底面探査


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