研究者データベース

PODOLSKIY EVGENY(ポドリスキ エブゲニ)
北極域研究センター
助教

基本情報

通称等の別名

    Podolskiy Evgeny

所属

  • 北極域研究センター

職名

    助教

学位

  • 理学博士 (名古屋大学)

メールアドレス

    eメール:    e.podolskiy@arc.hokudai.ac.jp

科研費研究者番号

  • 80775536

ORCID ID

  • 0000-0002-3050-4897

研究キーワード

  • Patagonia   Antarctica   Himalaya   Greenland   雪氷   雪   雪崩   氷河   氷河地震   

研究分野

  • 環境学 / 環境動態解析 / glaciology, natural hazards, environment

職歴

  • 2019年04月 - 現在  The CryosphereEditor
  • 2015年12月 - 現在  Hokkaido UniversityArctic Research CenterAssistant Professor, Group Sub Leader
  • 2015年04月 - 2015年11月  Hokkaido UniversityInstitute of Low Temperature ScienceJSPS Research Fellow
  • 2012年06月 - 2014年06月  Joseph Fourier UniversityIRSTEAMarie Curie Research Fellow
  • 2011年01月 - 2012年05月  Joseph Fourier UniversityIRSTEAPostdoctoral Scholar
  • 2010年08月 - 2010年12月  Nagoya UniversityGraduate School of Environmental ScienceResearcher

学歴

  • 2008年10月 - 2010年06月   Nagoya University   Graduate School of Environmental Studies   Ph.D.
  • 2003年09月 - 2005年06月   Moscow State University   Faculty of Geography   M.Sc.
  • 1999年09月 - 2003年06月   Moscow State University   Faculty of Geography   B.Sc.
  • 1996年09月 - 1999年06月   Lyceum of Information Technology #1533

研究活動情報

論文

  • Minowa M., Podolskiy E., Sugiyama S.
    Annals of Glaciology 60 (79) n/a - n/a 2019年05月 [査読有り][通常論文]
     研究論文(学術雑誌)
  • Podolskiy Evgeny
    Journal of Geophysical Research 124 n/a - n/a 2019年05月 [査読有り][通常論文]
     研究論文(学術雑誌)
  • Minowa, M., E.A. Podolskiy, G. Jouvet, Y. Weidmann, D. Sakakibara, S. Tsutaki, R. Genco, S. Sugiyama
    Earth and Planetary Science Letters 515 283 - 290 2019年04月 [査読有り][通常論文]
     研究論文(学術雑誌)
  • European Journal of Mechanics / A Solids 74 26 - 33 2018年10月 [査読有り][通常論文]
     研究論文(学術雑誌)
  • Geophysical Research Letters 45 9699 - 9709 2018年08月 [査読有り][通常論文]
     研究論文(学術雑誌)
  • Journal of Glaciology 64 (245) 362 - 376 2018年04月 [査読有り][通常論文]
     研究論文(学術雑誌)
  • Sugiyama, S., Tsutaki, S., Sakakibara, D., Saito, J., Ohashi, Y., Katayama, N., Podolskiy, E., Matoba, S., Funk, M., and Genco, R.
    Low Temperature Science 75 1 - 13 2017年03月 [査読無し][通常論文]
     研究論文(大学,研究機関紀要)
  • Podolskiy Evgeny
    Low Temperature Science 75 15 - 36 2017年03月 [査読無し][招待論文]
     研究論文(大学,研究機関紀要)
  • Podolskiy Evgeny
    Reviews of Geophysics 54 (4) 708 - 758 2016年10月 [査読有り][招待論文]
     研究論文(学術雑誌)
  • Podolskiy Evgeny
    Geophysical Research Letters 43 2036 - 2044 2016年03月 [査読有り][通常論文]
     研究論文(学術雑誌)
  • Evgeny A. Podolskiy, Valentina A. Lobkina, Yuri V. Gensiorovsky, Emmanuel Thibert, Emmanuel Thibert
    Cold Regions Science and Technology 114 44 - 60 0165232X 2015年06月 [査読有り][通常論文]
     研究論文(学術雑誌) 
    © 2015. Systematic snow disposal from street cleaning operations may create large anthropogenic snow/ice bodies. Such man-made cryospheric objects may be considered as complex geophysical interfaces between the atmosphere, landscape, soils and hydrosphere. Urban snow patches not only produce large amounts of meltwater (and therefore a risk of flooding), but also serve as multiphase chemical reactors due to highly polluted mixture of snow/ice with various materials and water inclusions. However, the exact roles of snow patches in the environment and the factors driving their temporal evolution remain unclear. They are nevertheless of major importance for informed decision making and sustainable disposal operations. Here we present the results of a 4-year monitoring program concerning two artificial snow patches near the town of Yuzhno-Sakhalinsk (Russia) and the results of numerical modeling inferring the main corresponding processes, i.e. melting and water discharges. The temperature-based index method proved adequate to assess the evolution of the two snow patches. Constant ablation factors of about 0.45-0.58 and 0.27-0.31cmw.e.d-1°C-1, respectively, were found to be appropriate for a first order approximation of snow patch melt dynamics. However, twice lower melt rates were found for one of the two closely located snow patches. This suggests that other factors, such as debris content, likely play a role. This difference in melting can be accounted for by modulating the ablation factor according to debris properties. In terms of peak daily water discharge, snow patch melting produces about 5-15cmw.e.perday, comparable to rain rates during regional typhoons. This study represents a starting point that should be followed by a more detailed monitoring program and the application of a more complex numerical model of snow disposal sites, to allow optimization of their maintenance. For example, marginal melting or the combined influence of debris and soils on surface runoff should be further investigated. Moreover, better constrained and formulated chemical processes will allow a more reliable estimate of the local environmental impact of regular snow disposal.
  • E. A. Podolskiy, G. Chambon, M. Naaim, J. Gaume
    Natural Hazards and Earth System Sciences 15 119 - 134 15618633 2015年01月 [査読有り][通常論文]
     研究論文(学術雑誌) 
    © 2015 Author(s). Snowpack weak layers may fail due to excess stresses of various natures, caused by snowfall, skiers, explosions or strong ground motion due to earthquakes, and lead to snow avalanches. This research presents a numerical model describing the failure of "sandwich" snow samples subjected to shaking. The finite element model treats weak layers as interfaces with variable mechanical parameters. This approach is validated by reproducing cyclic loading snow fracture experiments. The model evaluation revealed that the Mohr-Coulomb failure criterion, governed by cohesion and friction angle, was adequate to describe the experiments. The model showed the complex, non-homogeneous stress evolution within the snow samples and especially the importance of tension on fracture initiation at the edges of the weak layer, caused by dynamic stresses due to shaking. Accordingly, a simplified analytical solution, ignoring the inhomogeneity of tangential and normal stresses along the failure plane, may incorrectly estimate the shear strength of the weak layers. The values for "best fit" cohesion and friction angle were ‰1.6 kPa and 22.5-60°. These may constitute valuable first approximations in mechanical models used for avalanche forecasting.
  • E. A. Podolskiy, M. Barbero, F. Barpi, G. Chambon, M. Borri-Brunetto, O. Pallara, B. Frigo, B. Chiaia, M. Naaim
    Cryosphere 8 1651 - 1659 19940416 2014年09月 [査読有り][通常論文]
     研究論文(学術雑誌) 
    © Author(s) 2014. CC Attribution 3.0 License. Natural sintering in ice is a fundamental process determining mechanical properties of various ice forms. According to the literature, limited data are available about the complex subjects of snow sintering and bond formation. Here, through cold laboratory mechanical tests with a new shear apparatus we demonstrate time-dependent effects of isothermal sintering on interface strengthening at various normal pressures. Measurements showed that interfacial strength evolved rapidly, conforming to a power law (mean exponent ≈ 0.21); higher pressure corresponded to higher initial strength and sintering rates. Our findings are consistent with observations on homogeneous snow, provide unique records essential for slope stability models and indicate the significant importance of normal load on data interpretation.
  • Evgeny A. Podolskiy, Kaoru Izumi, Vladimir E. Suchkov, Vladimir E. Suchkov, Nicolas Eckert
    Journal of Glaciology 60 409 - 430 00221430 2014年01月 [査読有り][通常論文]
     研究論文(学術雑誌) 
    The analysis of historical avalanche data is important when developing accurate hazard maps. The record of snow-avalanche disasters on Sakhalin and the Kuril Islands is incomplete, due to the historical division into periods of Japanese and Russian rule. Here we combine and analyze data from Japanese and Russian sources to reconstruct a continuous record of avalanche catastrophes in the region from 1910 to 2010. Despite the relatively small scale of the majority of catastrophic avalanches, with a total vertical drop <200 m, we document evidence that places the region among the most avalancheaffected areas in the world. In total, 756 fatalities and >238 injuries have occurred in 275 incidents over a 100 year period (two-thirds of those killed were Japanese). This death toll is higher than that in Canada, New Zealand or Iceland, or non-recreational fatalities in France. A wave of avalanche disasters (1930s-60s) following intense colonization of Sakhalin and the Kuril Islands is evident. Although this 'wave' could be considered a local issue of the past, many presently developing countries may face similar situations. The fatality rate has decreased over time, due to social factors, and differs from that of any other region, in its absence of deaths through recreational activities. Although in recent years the fatality rate is lower than that of Iceland or the USA, the per capita avalanche casualty rate on Sakhalin and the Kuril Islands remains among the highest in the world.
  • Podolskiy Evgeny A, Chambon G, Naaim M, Gaume J
    J. Glaciol. 59 (218) 1189 - 1201 2013年 [査読有り][通常論文]
  • Podolskiy E, Nygaard B, Nishimura K, Makkonen L, Lozowski E
    Journal of Geophysical Research 12 (1) 2012年06月 [査読有り][通常論文]
     
    Podolskiy, E, Nygaard, B, Nishimura, K, Makkonen, L & Lozowski, E, 2012, 'Study of unusual atmospheric icing at Mount Zao, Japan, using the Weather Research and Forecasting model', Journal of Geophysical Research, vol. 12, no. 1, p. 179.
  • Podolskiy E
    Science. 2012年06月 [査読有り][通常論文]
     
    Podolskiy, E, 2012, 'Perspective: Learning from Others' Mistakes', Science.
  • Podolskiy E, Nishimura K, Abe O, Chernous P
    Journal of Glaciology 56 (197) 431 - 446 2010年08月 [査読有り][通常論文]
     
    Podolskiy, E, Nishimura, K, Abe, O & Chernous, P, 2010, 'Earthquake-induced snow avalanches: I. Historical case studies', Journal of Glaciology, vol. 56, no. 197, pp. 431-446.
  • Podolskiy E, Nishimura K, Abe O, Chernous P
    Journal of Glaciology 56 (197) 447 - 458 2010年08月 [査読有り][通常論文]
     
    Podolskiy, E, Nishimura, K, Abe, O & Chernous, P, 2010, 'Earthquake-induced snow avalanches: II. Experimental study', Journal of Glaciology, vol. 56, no. 197, pp. 447-458.
  • Podolskiy E
    Earth Interactions 13 (4) 1 - 14 2009年05月 [査読有り][通常論文]
     
    Podolskiy, E, 2009, 'Effects of Recent Environmental Changes on Global Seismicity and Volcanism', Earth Interactions, vol. 13, no. 4, pp. 1-14.
  • Podolskiy E
    103 213 - 221 2007年 [査読有り][通常論文]
     
    Podolskiy, E, 2007, 'Unexpected Aspect. Jean Louis Rodolphe Agassiz', Data of Glaciological Studies, vol. 103, pp. 213-221. Biography and scientific contributions of J. L. R. Agassiz, the founder of experimental Glaciology.

講演・口頭発表等

  • Continuous and discrete ice-quakes due to fracture, slow slip and fluids  [招待講演]
    Podolskiy Evgeny
    The International Statistical Seismology (StatSei) workshop 2019年08月
  • Volcanic‐like long-period seismic events at a tidewater glacier in Greenland  [通常講演]
    Podolskiy Evgeny
    EGU General Assembly 2019 2019年04月
  • Thermal fracturing on a Himalayan debris-covered glacier  [招待講演]
    Podolskiy Evgeny
    EGU General Assembly 2019 2019年04月
  • Hydro-acoustic monitoring of mammals and ice dynamics in Greenland  [通常講演]
    Podolskiy Evgeny
    ArCS合同セミナー (テーマ2とテーマ6)、北海道大学水産学部、函館 2019年03月
  • Podolskiy Evgeny
    北海道大学低温科学研究所共同利用研究集会 「気候変化に伴う質量収支と氷河変動に関する研究」 2019年01月
  • Nocturnal Thermal Fracturing of a Himalayan Debris-covered Glacier: Evidence from Ambient Seismic Noise and Numerical Modeling  [通常講演]
    Podolskiy Evgeny
    AGU Fall Meeting 2018 2018年12月
  • Hydraulic Link between Glacier-dammed Lake and Meltwater Plume Revealed by Seismic Tremor, Time-lapse Imagery, Radar and Mooring  [通常講演]
    Podolskiy Evgeny
    AGU Fall Meeting 2018 2018年12月
  • 氷河末端の係留観測で明らかになった氷河融解水プルームによる乱流中のエネ ルギーカスケード  [通常講演]
    Podolskiy Evgeny
    ArCS氷河氷床・海洋相互作用課題 第2回会合 2018年11月
  • Nocturnal thermal fracturing of a Himalayan debris-covered glacier: Evidence from ambient seismic noise and numerical modelling  [通常講演]
    Podolskiy Evgeny
    Glaciological Seminar, VAW/ETH-Zurich 2018年10月
  • Seismic symphony of a tidewater glacier: tide-modulated cracks, subglacial GLOFs, calving and sliding tremors  [通常講演]
    Podolskiy Evgeny
    Glaciological Seminar, VAW/ETH-Zurich 2018年09月
  • Long-period seismic events and tremor at a tidewater glacier in Greenland  [通常講演]
    Podolskiy Evgeny
    European Seismological Commission General Assembly 2018 2018年09月
  • Ambient seismic noise に記録されたネパールヒマラヤのデブリ氷河における夜間の熱的破砕現象  [通常講演]
    Podolskiy Evgeny
    地震火山研究観測センター, 2018年度 第2 回談話会 2018年07月
  • Ambient seismic noise at a Himalayan debris-covered glacier  [通常講演]
    Podolskiy Evgeny
    Japan Geoscience Union Meeting 2018年05月
  • Seismic noise as a treasure mountain for a glaciologist  [通常講演]
    Podolskiy Evgeny
    地震火山研究観測センター, 2017年度 第4 回談話会 2018年01月
  • Seismic noise as a proxy for glacier dynamics  [通常講演]
    Podolskiy Evgeny
    5th International Symposium on Arctic Research (ISAR-5) 2018年01月
  • 雑微動: 地震学者の頭痛の種氷河学者にとっては宝の山  [通常講演]
    Podolskiy Evgeny
    グリンランド氷床における近年の質量損失の実態解明 2017年11月

競争的資金等の研究課題

  • 氷河学における新た なプロキシとしての 地震波解析
    JSPS:Grants-in-Aid for Scientific Research
    研究期間 : 2018年04月 -2021年03月 
    代表者 : Podolskiy Evgeny


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