Updated on 2024/03/31

写真a

 
ICHIHARA Hiroshi
 
Organization
Graduate School of Environmental Studies Earthquake and Volcano Research Center Lecturer
Graduate School
Graduate School of Environmental Studies
Undergraduate School
School of Science Department of Earth and Planetary Science
Title
Lecturer
External link

Degree 1

  1. 博士(理学) ( 2008.3   北海道大学 ) 

Research Interests 4

  1. Subsurface structure

  2. Geophysical exploration

  3. Magnetotelluric method

  4. Subduction zone

Research Areas 1

  1. Natural Science / Solid earth sciences

Research History 10

  1. Nagoya University   Lecturer

    2021.11

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    Country:Japan

  2. Nagoya University   Assistant Professor

    2017.6 - 2021.10

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    Country:Japan

  3. Kobe University   KOBEC

    2016.4 - 2017.5

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    Country:Japan

  4. 海洋研究開発機構   地震津波観測研究開発センター   招聘技術研究員(中断期間有)

    2015.11 - 2017.3

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    Country:Japan

  5. Kobe University   Graduate school of maritime sciences

    2015.10 - 2016.3

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    Country:Japan

  6. GNS Science   Guest Scientist

    2013.11 - 2014.10

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    Country:New Zealand

  7. The University of Tokyo

    2009.5 - 2016.3

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    Country:Japan

  8. Japan Agency for Marine-Earth Science and Technology (JAMSTEC)

    2009.4 - 2015.9

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    Country:Japan

  9. The University of Tokyo   Earthquake Research Institute

    2008.4 - 2009.3

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    Country:Japan

  10. Japan Society for Promotion of Science

    2006.4 - 2008.3

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    Country:Japan

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Education 3

  1. Hokkaido University   Graduate School, Division of Natural Science

    2005.4 - 2008.3

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    Country: Japan

  2. Ehime University   Graduate School, Division of Science and Engineering

    2003.4 - 2005.3

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    Country: Japan

  3. Ehime University   Faculty of Science

    1999.4 - 2003.3

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    Country: Japan

Professional Memberships 4

  1. 地球電磁気・地球惑星圏学会   将来構想WG

    2018.1

  2. 物理探査学会   会誌編集委員

    2013.6

  3. 日本地質学会

  4. 日本地震学会

Committee Memberships 1

  1. 5th International Symposium on Three-Dimensional Electromagnetics "Future Challenges"   LOC and convener  

    2012 - 2013   

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    Committee type:Academic society

Awards 4

  1. SGEPSS論文賞

    2022.11   地球電磁気・地球惑星圏学会   Electrical conductive fluid-rich zones and their influence on the earthquake initiation, growth, and arrest processes: observations from the 2016 Kumamoto earthquake sequence, Kyushu Island, Japan

    Aizawa, K., S. Takakura, H. Asaue, K. Koike, R. Yoshimura, K. Yamazaki, S. Komatsu, M. Utsugi, H. Inoue, K. Tsukamoto, M. Uyeshima, T. Koyama, W. Kanda, T. Yoshinaga, N. Matsushima, K. Uchida, Y. Tsukashima, T. Matsushima, H. Ichihara, D. Muramatsu, Y. Teguri, A. Shito, S. Matsumoto, and H. Shimizu

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    Award type:Award from Japanese society, conference, symposium, etc. 

  2. 大林奨励賞

    2016   地球電磁気・地球惑星圏学会  

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    Country:Japan

  3. 第117回学術講演会優秀講演賞

    2007   物理探査学会  

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

  4. 第113年学術大会優秀講演賞

    2006   日本地質学会  

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    Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

 

Papers 54

  1. 磁気インピーダンスセンサを用いた廉価な磁力計の開発: 関東-東北-北海道への稠密磁場観測ネットワークの展開 Reviewed

    前田大輝, 能勢正仁, 野村太志, 足立匠, 山本優佳, 熊本篤志, 石田祐宣, 市原寛, 河野剛健, 岩永吉広, 立松峻一, 浅利晴紀, 平原秀行, 海東恵美, 長町信吾, 渡邉修一, 山内大輔

    宇宙科学情報解析論文誌   Vol. 13   page: 71 - 82   2024.2

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.20637/0002000302

  2. 2D resistivity model around the rupture area of the 2011 Tohoku-oki earthquake (Mw 9.0) Reviewed

    Ichihara, H; Kasaya, T; Baba, K; Goto, T; Yamano, M

    EARTH PLANETS AND SPACE   Vol. 75 ( 1 )   2023.5

  3. Drift of an ocean bottom electromagnetometer from the Bonin to Ryukyu Islands: estimation of the path and travel time by numerical tracking experiments Reviewed

    EARTH PLANETS AND SPACE   Vol. 73 ( 1 )   2021.12

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1186/s40623-021-01552-8

    Web of Science

  4. Magnetization structure of Nishinoshima volcano, Ogasawara island arc, obtained from magnetic surveys using an unmanned aerial vehicle Reviewed

    Noriko Tada, Hiroshi Ichihara, Masaru Nakano, Mitsuru Utsugi, Takao Koyama, Tatsu Kuwatani, Kiyoshi Baba, Fukashi Maeno, Akimichi Takagi, Minoru Takeo

    Journal of Volcanology and Geothermal Research   Vol. 419   page: 107349   2021.11

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.jvolgeores.2021.107349

    Web of Science

  5. Imaging of a serpentinite complex in the Kamuikotan Zone, northern Japan, from magnetotelluric soundings Reviewed

    Ichihara Hiroshi, Mogi Toru, Uchida Toshihiro, Satoh Hideyuki, Yamaya Yusuke, Fujii Masakazu, Yamazaki Shusaku, Okazaki Kenji, Tada Noriko

    EARTH PLANETS AND SPACE   Vol. 73 ( 1 )   2021.7

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1186/s40623-021-01482-5

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  6. タール火山(フィリピン)で2020年1月に起こった噴火の概要と防災対応 Reviewed

    熊谷 博之, 濵本, 未希, 市原 寛

    火山   Vol. 66 ( 1 ) page: 45 - 53   2021.3

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.18940/kazan.66.1_45

  7. Electrical conductive fluid-rich zones and their influence on the earthquake initiation, growth, and arrest processes: observations from the 2016 Kumamoto earthquake sequence, Kyushu Island, Japan Reviewed

    Aizawa, K; Takakura, S; Asaue, H; Koike, K; Yoshimura, R; Yamazaki, K; Komatsu, S; Utsugi, M; Inoue, H; Tsukamoto, K; Uyeshima, M; Koyama, T; Kanda, W; Yoshinaga, T; Matsushima, N; Uchida, K; Tsukashima, Y; Matsushima, T; Ichihara, H; Muramatsu, D; Teguri, Y; Shito, A; Matsumoto, S; Shimizu, H

    EARTH PLANETS AND SPACE   Vol. 73 ( 1 )   2021.1

  8. Method for obtaining response functions from noisy magnetotelluric data using frequency-domain independent component analysis Reviewed

    Sato, S; Goto, TN; Kasaya, T; Ichihara, H

    GEOPHYSICS   Vol. 86 ( 1 ) page: E21 - E35   2021.1

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    Language:Japanese  

    DOI: 10.1190/GEO2018-0792.1

    Web of Science

  9. Two independent signals detected by ocean bottom electromagnetometers during a non-eruptive volcanic event: Ogasawara Island arc volcano, Nishinoshima Reviewed

    Baba, K; Tada, N; Ichihara, H; Hamano, Y; Sugioka, H; Koyama, T; Takagi, A; Takeo, M

    EARTH PLANETS AND SPACE   Vol. 72 ( 1 )   2020.8

  10. Electrical resistivity imaging of the inter-plate coupling transition at the Hikurangi subduction margin, New Zealand Reviewed International coauthorship

    Heise Wiebke, Ogawa Yasuo, Bertrand Edward A., Caldwell T. Grant, Yoshimura Ryokei, Ichihara Hiroshi, Bennie Stewart L., Seki Kaori, Saito Zenshiro, Matsunaga Yasuo, Suzuki Atsushi, Kishita Takahiro, Kinoshita Yusuke

    EARTH AND PLANETARY SCIENCE LETTERS   Vol. 524   2019.10

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.epsl.2019.115710

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  11. Modeling of a dispersive tsunami caused by a submarine landslide based on detailed bathymetry of the continental slope in the Nankai trough, southwest Japan Reviewed

    Baba Toshitaka, Gon Yodai, Imai Kentaro, Yamashita Kei, Matsuno Tetsuo, Hayashi Mitsuru, Ichihara Hiroshi

    TECTONOPHYSICS   Vol. 768   2019.10

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.tecto.2019.228182

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  12. Electrical resistivity modeling around the Hidaka collision zone, northern Japan: regional structural background of the 2018 Hokkaido Eastern Iburi earthquake (M-w 6.6) Reviewed

    Ichihara Hiroshi, Mogi Toru, Satoh Hideyuki, Yamaya Yusuke

    EARTH PLANETS AND SPACE   Vol. 71 ( 1 )   2019.9

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1186/s40623-019-1078-7

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  13. A 3D electrical resistivity model around the focal zone of the 2017 southern Nagano Prefecture earthquake (MJMA 5.6): implications for relationship between seismicity and crustal heterogeneity Reviewed

    Hiroshi Ichihara, Junna Kanehiro, Toru Mogi, Koshun Yamaoka, Edward Bertrand, Mamoru Adachi

    Earth, Planets and Space   Vol. 70 ( 182 )   2018.11

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1186/s40623-018-0950-1

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  14. A New Miniaturized Magnetometer System for Long-Term Distributed Observation on the Seafloor Reviewed

    1) Kazunori Ogawa, Tetsuo Matsuno, Hiroshi Ichihara, Kazuo Nakahigashi and Nobukazu Seama

    Earth, Planet, Space   Vol. 70   2018.7

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1186/s40623-018-0877-6

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  15. Report: The OJP array: seismological and electromagnetic observation on seafloor and islands in the Ontong Java Plateau Reviewed

    Daisuke Suetsugu, Hajime Shiobara, Hiroko Sugioka, Noriko Tada, Aki Ito, Takehi Isse, Kiyoshi Baba, Hiroshi Ichihara, Toyonobu Ota, Yasushi Ishihara, Satoru Tanaka, Masayuki Obayashi, Takashi Tonegawa, Junko Yoshimitsu, Takumi Kobayashi, Hisashi Utada

    JAMSTEC-R   Vol. 26   page: 54-64   2018.3

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.5918/jamstecr.26.54

  16. 御嶽山南東麓での MT 法による地熱探査

    金廣純奈, 茂木 透, 市原 寛, 山岡耕春, 足立 守, 田中 良

    2018年 Conductivity Anomaly研究会論文集     page: 94-99   2018.3

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    Language:Japanese   Publishing type:Research paper (bulletin of university, research institution)  

  17. 議論:海陸の3次元比抵抗モデリングにおけるメッシュデザインについて

    市原 寛, 多田 訓子

    2018年 Conductivity Anomaly研究会論文集     page: 102-104   2018.3

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    Authorship:Lead author   Language:Japanese   Publishing type:Research paper (bulletin of university, research institution)  

  18. Giant rhyolite lava dome formation after 7.3 ka supereruption at Kikai caldera, SW Japan Reviewed

    Yoshiyuki Tatsumi, Keiko Suzuki-Kamata, Tetsuo Matsuno, Hiroshi Ichihara, Nobukazu Seama, Koji Kiyosugi, Reina Nakaoka, Kazuo Nakahigashi, Hideaki Takizawa, Kazuki Hayashi, Tatsuro Chiba, Satoshi Shimizu, Mamoru Sano, Hikaru Iwamaru, Haruhisa Morozumi, Hiroko Sugioka, Yojiro Yamamoto

    Scientific Reports   Vol. 8   2018.2

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: doi:10.1038/s41598-018-21066-w

  19. Giant rhyolite lava dome formation after 7.3 ka supereruption at Kikai caldera, SW Japan

    Tatsumi, Y; Suzuki-Kamata, K; Matsuno, T; Ichihara, H; Seama, N; Kiyosugi, K; Nakaoka, R; Nakahigashi, K; Takizawa, H; Hayashi, K; Chiba, T; Shimizu, S; Sano, M; Iwamaru, H; Morozumi, H; Sugioka, H; Yamamoto, Y

    SCIENTIFIC REPORTS   Vol. 8   2018.2

  20. Three-dimensional time domain simulation of tsunami-generated electromagnetic fields: application to the 2011 Tohoku earthquake tsunami Reviewed

    Takuto Minami, Hiroaki Toh, Hiroshi Ichihara, Issei Kawashima

    J. Geophys. Res.   Vol. 122 ( 12 ) page: 9559 - 9579   2017.12

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1002/2017JB014839

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  21. Mapping subduction interface coupling using magnetotellurics; Hikurangi Margin, New Zealand Reviewed

    W. Heise, T.G. Caldwell, S. Bannister, E.A. Bertrand, Y. Ogawa, S.L. Bennie,H. Ichihara

    Geophys. Res. Lett.   Vol. 44 ( 18 ) page: 9261 - 9266   2017.9

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    DOI: 10.1002/2017GL074641

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  22. Noise-reduction method of magnetotelluric data based on frequency-domain independent component analysis Reviewed

    Shinya Sato, Tada-Nori Goto, Takafumi Kasaya, and Hiroshi Ichihara

    SEG Technical Program Expanded Abstracts 2017     page: 1241-1245   2017

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    DOI: 10.1190/segam2017-17727472.1

  23. 3-D electrical resistivity modeling of the southern Hidaka collision zone, northern Japan: constraints for arc-arc collision tectonics and earthquakes Reviewed

    H. Ichihara, T. Mogi, K. Tanimoto, Y. Yamaya, T. Hashimoto, M. Uyeshima and Y. Ogawa

    Geochemistry, Geophysics, Geosystems.   Vol. 17   2016

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1002/2015GC006222

  24. Investigations of shallow slow slip offshore of New Zealand

    R. Harris, L. Wallace, S. Webb, Y. Ito, K. Mochizuki, H. Ichihara, S. Henry , A. Tréhu , S. Schwartz, A. Sheehan, R. Lauer, D. Saffer

    Eos   Vol. 97   2016

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    DOI: 10.1029/2016EO048945

  25. Tsunami-induced Magnetic Fields Detected at Chichijima Island before the Arrival of the 2011 Tohoku Earthquake Tsunami Reviewed

    H. Tatehata, H. Ichihara and Y. Hamano

    Earth Planets Space   Vol. 67   2015

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1186/s40623-015-0347-3

  26. A 3-D electrical resistivity model beneath the focal zone of the 2008 Iwate-Miyagi Nairiku earthquake (M 7.2) Reviewed

    H. Ichihara, S. Sakanaka, M. Mishina, M. Uyeshima, T. Nishitani, Y. Ogawa, Y. Yamaya, T. Mogi, K. Amita and T. Miura

    Earth Planets Space   Vol. 66   2014

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1186/1880-5981-66-50

  27. Tsunami source of the 2011 Tohoku earthquake detected by an ocean-bottom magnetometer Reviewed

    H. Ichihara, Y. Hamano, K. Baba and T. Kasaya

    Earth Planet. Sci. Lett   Vol. 382   2013

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.epsl.2013.09.015

  28. Developing new magnetometer system for marine EM survey Reviewed

    Kasaya, T., H. Ichihara and T. Goto

    Proceedings of the 11th SEGJ International Symposium     page: 339-341   2013

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  29. Three-dimensional resistivity modeling of a seismogenic area on an oblique subduction zone in western Kurile arc: constraints from anomalous magnetotelluric phases Reviewed

    H. Ichihara, T. Mogi, and Y. Yamaya

    Tectoniphysics   Vol. 603   2013

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.tecto.2013.05.020

  30. Ocean bottom EM observations around the seismo-genic zone of the 2011 Tohoku earthquake (M9.0)

    Ichihara, H., T. Kasaya, K. Baba and Y. Hamano

    Extended Abstract, 21st EM Induction Workshop     page: S5.9   2012

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  31. A fault-zone conductor beneath a compressional inversion zone, northeastern Honshu, Japan Reviewed

    H. Ichihara, M. Uyeshima, S. Sakanaka, T. Ogawa, M. Mishina, Y. Ogawa, T. Nishitani, Y. Yamaya, A. Watanabe, Y. Morita, R. Yoshimura, and Y. Usui

    Geophys. Res. Lett.,   Vol. 38   2011

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1029/2011gl047382

  32. 屈斜路カルデラ周辺におけるMT 法による比抵抗探査

    本多亮, 山谷祐介, 市原寛, 長谷英彰, 茂木透, 山下晴之, 大山倫敦, 上嶋誠, 中川光弘

    北海道大学地球物理学研究報告   Vol. 74   page: 45-55   2011

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

  33. 北海道東部弟子屈地域の重力異常

    本多亮, 市原寛, 神山裕幸, 茂木透, 中川光弘

    北海道大学地球物理学研究報告   Vol. 74   page: 21-43   2011

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  34. 地殻・上部マントル電気比抵抗構造:観測の原理・精度と物性データの現状 Reviewed

    市原 寛, 市來 雅啓

    岩石鉱物科学   Vol. 40   page: 73-90   2011

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    Authorship:Lead author   Language:Japanese  

  35. 海底資源探査に向けた磁気探査装置の開発 -R/V「よこすか」YK09-09 航海における実海域試験-

    原田誠, 佐柳敬造, 伊勢崎修弘, 笠谷貴史, 澤隆雄, 浅田美穂, 多田訓子, 市原寛, 後藤忠徳, 野木義史, 大西信人, 松尾淳

    東海大学紀要海洋学部「海ー自然と文化」   Vol. 8   page: 23-40   2010

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  36. Three dimensional conductor models explaining out of quadrant magnetotelluric phases

    Ichihara, H., T. Mogi, M. Uyeshima and S. Sakanaka

    IAGA WG 1.2 on Electromagnetic Induction in the Earth 20th Workshop Extended Abstract     page: S1-O4   2010

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  37. 日本海東縁ひずみ集中帯(庄内—新庄地域)の比抵抗構造イメージング

    市原寛, 上嶋誠, 坂中伸也, 小河勉, 三品正明, 小川康雄, 西谷忠師, 山谷祐介, 渡邊篤志, 森田裕一, 吉村令慧, 臼井嘉哉

    月刊地球   Vol. 32   page: 417-424   2010

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  38. A realistic 3-D resistivity model explaining anomalous large magnetotelluric phases: the L-shaped conductor model Reviewed

    H. Ichihara, T. Mogi

    Geophys J Int   Vol. 179   2009

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1111/j.1365-246X.2009.04310.x

  39. 有珠火山東麓におけるMT法電磁探査

    高倉伸一, 橋本武志, 小川康雄, 井上寛之, 山谷祐介, 市原寛, 茂木透, 宇津木充, 松島善雄, 佐藤秀幸

    北海道大学地球物理学研究報告   Vol. 72   page: 107-115   2009

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  40. 有珠2000年新山域の比抵抗構造

    橋本武志, 小川康雄, 高倉伸一, 山谷祐介, 市原寛, 宇津木充, 井上寛之, 小池哲司, 長谷川浩, 茂木透

    北海道大学地球物理学研究報告   Vol. 72   page: 79-105   2009

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  41. MT法による黒松内地域の地下構造

    平田貴一, 茂木透, 山谷祐介, 長谷英彰, 山谷祐介, 市原寛

    北海道大学地球物理学研究報告   Vol. 72   page: 387-398   2009

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  42. The L-shaped conductor model explaining anomalous large magnetotelluric phases

    Ichihara, H. and T. Mogi

    Proceedings of the SEGJ international symposium     page: ID:79   2009

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  43. Hydrothermal system beneath the crater of Tarumai volcano, Japan: 3-D resistivity structure revealed using audio-magnetotellurics and induction vector Reviewed

    Y. Yamaya, T. Mogi, T. Hashimoto, and H. Ichihara

    Journal of Volcanology and Geothermal Research     2009

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.jvolgeores.2009.09.008

  44. Resistivity and density modelling in the 1938 Kutcharo earthquake source area along a large caldera boundary Reviewed

    H. Ichihara, T. Mogi, H. Hase, T. Watanabe, and Y. Yamaya

      Vol. 61   page: 345-356   2009

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  45. Resistivity structure around the focal area of the 2004 Rumoi-Nanbu earthquake (M 6.1), northern Hokkaido, Japan Reviewed

    H. Ichihara, R. Honda, T. Mogi, H. Hase, H. Kamiyama, Y. Yamaya, and Y. Ogawa

    Earth Planets Space   Vol. 60   page: 883-888   2008

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  46. Magnetotelluric observations around the focal region of the 2007 Noto Hanto Earthquake (M-j 6.9), Central Japan

    Yoshimura, R., Oshiman, N., Uyeshima, M., Ogawa, Y., Mishina, M., Toh, H., Sakanaka, S., Ichihara, H., Shiozaki, I., Ogawa, T., Miura, T., Koyama, S., Fujita, Y., Nishimura, K., Takagi, Y., Imai, M., Honda, R., Yabe, S., Nagaoka, S., Tada, M., Mogi, T.

    Earth Planets Space   Vol. 60   page: 117-122   2008

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  47. 2004 年留萌支庁南部地震震源域の重力測定

    本多亮, 神山裕幸, 山口照寛, 市原寛, 茂木透

    北海道大学地球物理学研究報告   Vol. 70   page: 27-41   2007

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  48. 1938年屈斜路地震断層周辺の比抵抗および密度構造

    市原寛, 茂木透, 長谷英彰, 渡邉朋典, 山谷祐介

    CA研究会2007年論文集     page: 1-8   2007

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    Authorship:Lead author   Language:Japanese   Publishing type:Research paper (scientific journal)  

  49. 広帯域MT観測および重力測定による北海道東部弟子屈地域の地殻構造

    市原寛, 茂木透, 山谷祐介, 神山裕幸, 小川康雄

    北海道大学地球物理学研究報告   Vol. 69   page: 233-255   2006

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  50. 重力異常およびボーリング資料による松山平野北部, 堀江低地の地下構造 Reviewed

    市原 寛, 榊原 正幸, 大野 一郎

    地質学雑誌   Vol. 110 ( 12 ) page: 746-757   2004

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  51. 松山平野下の基盤構造および第四系

    榊原正幸・大野一郎・市原寛・岩崎仁美

    四国の自然災害と防災(土木学会四国支部)   Vol. 3   page: 98-124   2004

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  52. 松山平野北部, 堀江低地の基盤構造

    市原寛・榊原正幸・大野一郎

    地盤災害・地盤環境問題論文集(地盤工学会四国支部)   Vol. 3   page: 141-154   2003

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  53. 松山平野周辺の地盤地質およびボーリングコア中のテフラの対比

    榊原正幸・岩崎仁美・市原寛

    地域防災研究(愛媛大学地域防災研究会)   Vol. 1   page: 5-38   2003

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  54. 松山平野周辺の地盤地質

    榊原正幸・小松正幸・市原寛

    愛媛大学芸予地震学術調査団最終報告書     page: 101-112   2002

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Presentations 21

  1. 鬼界カルデラ火山海底下の三次元比抵抗構造解析

    小畑 拓実, 荒木 将允, 廣瀬 時, 松野 哲男, 南 拓人, 大塚 宏徳, 巽 好幸, 杉岡 裕子, 市原 寛, 島 伸和

    第154回地球電磁気・地球惑星圏学会 総会・講演会 

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    Event date: 2023.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  2. Low-cost magnetometers using MI sensors: Estimation of magnetospheric plasma mass density from multi-point observation

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    Event date: 2023.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  3. 海底電磁場観測データの高品質部の抽出方法

    黒田真奈加、後藤忠徳、市原寛、松野哲男、笠谷貴史

    海洋理工学会2023年度春季大会 

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    Event date: 2023.6

    Language:Japanese   Presentation type:Oral presentation (general)  

  4. 恵那山断層、猿投山北断層、猿投-境川断層の反射法地震探査

    渡辺 俊樹,田所 敬一,石山 達也,松多 信尚,鈴木 康弘,山岡 耕春,市原 寛,齋藤 秀雄,中田 守,阿部 進

    物理探査学会第148回 (2023年度春季)学術講演会 

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    Event date: 2023.5 - 2023.6

    Language:Japanese   Presentation type:Oral presentation (general)  

  5. 反射法地震探査による恵那山断層、猿投山北断層、猿投-境川断層の浅部構造

    渡辺 俊樹、田所 敬一、石山 達也、松多 信尚、鈴木 康弘、山岡 耕春、市原 寛、齋藤 秀雄、中田 守、阿部 進

    日本地球惑星科学連合2023年大会  2023.5 

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    Event date: 2023.5

    Language:Japanese   Presentation type:Poster presentation  

  6. Imaging 3D resistivity structure under the seafloor of Kikai caldera volcano

    2023.5 

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    Event date: 2023.5

    Language:Japanese   Presentation type:Oral presentation (general)  

  7. 三陸沖日本海溝の海側斜面における太平洋プレート・アセノスフェアの比抵抗構造

    櫻井 未久、後藤 忠徳、佐藤 真也、市原 寛、笠谷 貴史、山野 誠

    日本地球惑星科学連合2023年大会  2023.5 

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    Event date: 2023.5

    Language:Japanese   Presentation type:Poster presentation  

  8. 海洋MT法における電磁場データ中の高品質部の抽出方法の検討価

    黒田 真奈加、後藤 忠徳、市原 寛、松野 哲男、笠谷 貴史

    日本地球惑星科学連合2023年大会  2023.5 

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    Event date: 2023.5

    Language:Japanese   Presentation type:Poster presentation  

  9. Application of EM-ACROSS to investigate underground structures of the Kusatsu-Shirane Volcano, Japan International coauthorship

    2023.5 

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    Event date: 2023.5

    Language:English   Presentation type:Oral presentation (general)  

  10. Physical and microscopic analysis of excessive electrical conduction along sulfide-filled microcracks in hydrothermal vein systems

    2023.5 

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    Event date: 2023.5

    Language:English   Presentation type:Oral presentation (general)  

  11. Observation of geomagnetic field variations with low-cost magnetometers using magneto-impedance (MI) sensors

    2023.5 

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    Event date: 2023.5

    Language:Japanese   Presentation type:Poster presentation  

  12. グリッドサーチ結果の確率分布への変換 ― 地磁気異常源推定問題への応用

    市原 寛、桑谷 立

    日本地球惑星科学連合2023年大会  2023.5 

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    Event date: 2023.5

    Language:Japanese   Presentation type:Poster presentation  

  13. 日本海溝周辺域の二次元比抵抗構造モデリング

    市原 寛, 笠谷 貴史, 馬場 聖至, 後藤 忠徳, 山野 誠

    日本地球惑星科学連合2022年大会  2022.5 

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  14. 日向灘周辺における3次元比構造の推定

    中村 捷人, 市原 寛, 畑 真紀, 多田 訓子, 後藤 忠徳, 松野 哲男, 上嶋 誠

    日本地球惑星科学連合2022年大会  2022.5 

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  15. 電磁アクロスデータの時系列解析(2) International coauthorship

    芹田 創平, 小川 康雄, 曾 國軒, 石須 慶一, 國友 孝洋, 南 拓人, 市原 寛, Caldwell Grant

    日本地球惑星科学連合2022年大会  2022.5 

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  16. Low-cost magnetometer using magneto impedance (MI) sensor

    2022.11 

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  17. MT法探査による雌阿寒岳の3次元比抵抗構造とその解釈

    井上 智裕, 橋本 武志, 田中 良, 山谷 祐介, 市原 寛

    第152回地球電磁気・地球惑星圏学会総会・講演会  2022.11 

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  18. Broadband magnetotelluric survey in the Akan-Kutcharo caldera area, northern Japan – understanding of interactions between volcanic and tectonic activities International conference

    Hiroshi Ichihara, Takeshi Hashimoto, Tomohiro Inoue, Masamitsu Takada, Kazumi Okada, Atsuo Suzuki, Shinichiro Horikawa, Haruno Koike, Ryo Honda, Koki Aizawa

    IAVCEI2023  2023.1 

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    Country:New Zealand  

  19. Aeromagnetic survey of Nishinoshima volcano by using drone in 2019 International conference

    Noriko Tada, Hiroshi Ichihara, Masaru Nakano, Mitsuru Utsugi, Takao Koyama, Tatsu Kuwatani, Kiyoshi Baba, Fukashi Maeno, Akimichi Takagi, Minoru Takeo

    IAVCEI2023  2023.1 

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  20. 南東北背弧側の地殻の3次元電気比抵抗構造

    臼井 嘉哉, 上嶋 誠, 長谷 英彰, 市原 寛, 相澤 広記, 小山 崇夫, 坂中 伸也, 小河 勉, 山谷 祐介, 西谷 忠師, 浅森 浩一, 小川 康雄, 吉村 令慧, 高倉 伸一, 三品 正明, 森田 裕一

    日本地球惑星科学連合2022年大会  2022.5 

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  21. 西之島から西表島まで漂流した海底電位磁力計から明らかになったこと

    多田 訓子, 西川 悠, 渡部 裕美 市原 寛, 桑谷 立

    日本地球惑星科学連合2022年大会  2022.5 

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Research Project for Joint Research, Competitive Funding, etc. 2

  1. 海底カルデラ地下構造探査手法の検討

    2016.10 - 2017.3

    出資金による受託研究 

  2. 組み合わせ最適化アルゴリズムによる電磁気、重力インバージョンおよびその評価法の開発

    2005

    日本科学財団笹川研究助成 

    市原 寛

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    Grant type:Competitive

KAKENHI (Grants-in-Aid for Scientific Research) 14

  1. International collaborative research on the viscosity of the oceanic asthenosphere through marine geophysical observations and geodynamic modeling

    Grant number:23H00138  2023.4 - 2027.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

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    Authorship:Coinvestigator(s) 

  2. 難観測域解消のための遠隔電場観測手法の開発

    Grant number:20K04105  2020.4 - 2024.3

    科学研究費助成事業  基盤研究(C)

    市原 寛, 北田 数也, 多田 訓子

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    Authorship:Principal investigator 

    Grant amount:\4290000 ( Direct Cost: \3300000 、 Indirect Cost:\990000 )

    近年、火山山頂部および火山島などの「観測の空白域」において、ドローンを用いた遠隔観測が注目されている。しかし、深部比抵抗構造の解明に重要な電場観測は難易度が高く研究例はない。本研究は、海底で先行している遠隔電場観測の技術を応用してドローン電場観測を行い、陸上の「観測の空白域」における地下の電気比抵抗構造の解明を可能にすることを目的とする。令和2-3年度はおもに装置の開発を行い、令和3-4年度に検証試験および研究成果の発表を行う計画である。本観測によって得られた知見は、将来的に月および火星等における惑星内部構造解明に向けた探査にも活用可能であると期待される。
    火山山頂部および火山島は噴火予測や火山活動そのものの理解において重要な観測域であるにも関わらず、アクセスの困難さおよび安全面から「観測の空白域」 であることが多い。特に、ケーブルを展張しての設置が必要となる地球電場は観測が困難となっている。このため、本研究はUAV(ドローン)を用いて電極等の地表設置を行うことにより電場観測を実現し、これらの難観測域における電気比抵抗構造の解明を可能にすることを目的とする。具体的には、UAV本体に取り付けた電極とUAVに吊したケーブルの先に取り付けた電極を距離を開けて着陸させ、電極間の電位差を測定する。これによって得た電場データと近傍で測定した磁場データから、Magnetotelluric法を用いて比抵抗構造を得る構想である。2022年度は、UAVを用いた具体的な電極の設置方法および実際の電場の測定方法を検討したのち、小型のUAVを用いてた飛行試験および(UAVを用いない)電場の観測試験を実施した。UAVの飛行試験は、COVID-19感染症による行動規制により限定的となり、御嶽山麓の敷地において実施した。この試験により、電極の投下・設置方法、着陸の際の制御方法などの検証を行った。電場の測定試験では、実際の観測を模した電極の設置方法(非埋設によるPb-PbCl電極測定・ステンレス棒による測定)により、ロガーを用いた高サンプリングレート(1024 Hz)での電場測定の試験を行い、帯域によっては問題なくデータが取得できることを確かめた。また、埋設しないで電場を観測するための設置素材の検討をおこなった。一方で、研究開始当初購入を予定していたUAVが販売停止となり、また、セキュリティ問題により購入可能なUAVに制限が生じていることから、実際の観測で用いる大型UAVの運用体制を見直し、業者からのレンタルによる観測を実施する方針で検討を進めた。
    2020年度に生じた購入を想定していたUAVの販売停止、およびセキュリティ問題による購入可能なUAVの制限、物価上昇によって、実際の観測に用いることが可能な大型UAVの予算内での購入が困難な状況となっている。このため、UAVの購入を断念し、UAVを業者より借用し計画を進めるすることを検討中である。また、COVID-19感染症の影響により、2020年度、2021年度に引き続き観測に制限が生じており、2022年度は御嶽山の麓において限定的な試験を実施したにとどまった。このため本研究課題は2023年度まで延長することとなり、想定よりもやや遅れている状況にある。
    2022年度は引き続き実際のフィールドに環境の近い御嶽山山麓部にて観測試験を実施する。具体的には、UAVへの観測装置を付けての観測、電場測定装置の展開方法の検討、配置した電極の配置(電極間距離および方向)の計測を他のUAVを用いて測定する方法を確立する。これにより、本研究の目的である遠隔地での電場観測に必要な技術要素の全てを確立することを目指す。なお、レンタルによるUAVを火山地域に持ち込むことは保険等の兼ね合いから困難であることから、実際の難観測地域での電場観測は実施しない可能性が高い。

  3. Precise volcano monitoring by actively controlled electromagnetic signal using frequency comb

    Grant number:20H01992  2020.4 - 2023.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    Ogawa Yasuo

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    An electromagnetic monitoring system using precisely controlled frequency comb signals was constructed and was demonstrated at Kusatsu-Shirane volcano. Two transmitter dipoles were installed at the southern foot of the volcano, and electromagnetic receivers were placed around the peak. The distances between the transmitters and receivers are approximately 5 km. The current dipoles were in two directions one in the east-west direction and the other in the north-south direction, transmitting sine waves consisting of frequency sets with logarithmic equal intervals in the frequency range of 0.02 Hz to 4.6 Hz. By synchronising the function generator with a 10 MHz GPS signal, the transmitted signal could be repeated with high accuracy over a long period of time. The stacking method using the inverse of the noise as weights was found to be effective in extracting weak repetitive signal components from the received signals, and the response functions could be easily obtained.

  4. Understanding the magma system at Taal volcano, Philippines, based on in-situ geophysical observations

    Grant number:19KK0084  2019.10 - 2024.3

    Grants-in-Aid for Scientific Research  Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))

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  5. Elucidating volcanic activities of Nishinoshima by using electromagnetic data from the seafloor

    Grant number:18H01319  2018.4 - 2022.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    TADA Noriko

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    By the end of December 2020, we had installed submarine electromagnetic field instruments at 21 sites around Nishinoshima, and recovered 16 of these instruments by self surfacing. One additional OBEM was discovered on the coast of Iriomote Island, approximately 1,700 km away, in February 2021. The organisms attached to the OBEM and the drift simulation suggested that the time when the OBEM surfaced from the seafloor may coincide with the active period of the 2020 eruption of Nishinoshima.
    To clarify the shallow structure of the island portion of Nishinoshima, an aeromagnetic survey using a drone equipped with a total magnetometer was conducted over Nishinoshima in September 2019. The total magnetic field distribution was acquired at about 100 m above the ground surface. Remarkable magnetic anomalies around Nishinoshima were discovered, and the three-dimensional magnetization structure was obtained by the magnetic anomaly distribution.

  6. Can we understand strength and hydraulic permeability of a large fracture zone by using geophysical technique?

    Grant number:18H03894  2018.4 - 2022.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

    Tada-nori Goto

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    In order to understand the hydraulic permeability and strength of large-scale fractures distributed below the land and sea, in this study, we developed a new technology based on the combination of geophysical exploration of the crust (electrical/electromagnetic exploration with seismic survey), geological and geochemical studies. Proposal of a rock physics model for estimation of the bulk hydraulic permeability, detailed visualization of the subsurface structure around the Atera active fault in Gifu prefecture, surveys of subseafloor structure off Kumano, in the Nankai Trough, and so on, were successfully done. Discussions were also done on high porosity and high permeability along damage zones along land/marine active faults .

  7. Study on Seismic and Electromagnetic Subsurface Structure around the Source of Slow Earthquakes

    Grant number:16H06475  2016.6 - 2021.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

    Mochizuki Kimihiro

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    Three dimensional structures of seismic velocity and electric resistivity around the Bungo Channel region, where various types of slow earthquakes have been observed, were obtained through integrated analyses of seismic and electromagnetic observation and surveys over the onshore and offshore regions. These structures are mutually consistent in that they show large amount of fluid around the activity of both deep and shallow tectonic tremors under the onshore and offshore regions, respectively. Under eastern Shikoku, it has been shown that a subducting seamount determines the up-dip limit of the deep tectonic tremor activity. In the central part of the Nankai Trough off the Kii Peninsula, offshore continuous seismic monitoring revealed spatiotemporal changes of fluid distribution within the subsurface structure along the slow slip event cycle.

  8. Integrated analyses of marine and land magnetotelluric data for investigations of fluid distribution in megathrust earthquake zones

    Grant number:16K17793  2016.4 - 2020.3

    Ichihara Hiroshi

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    Authorship:Principal investigator 

    Grant amount:\4420000 ( Direct Cost: \3400000 、 Indirect Cost:\1020000 )

    Integrated analyses of marine and land magnetotelluric data are important to understand fluid distribution in subduction zones. However, “coastal effect” due to 3-D seawater distribution is essential problem for this purpose. In this study, we firstly obtained ocean bottom mangetotelluric data in the shallow sea areas where long term observation had not been carried out. The estimated MT impedances showed the coastal effect especially at the period between 100-1000 second. Then we investigated the applicability of the 3-D forward/inversion code for magnetotelluric data. The results showed that the code explained coastal effect and 3-D resistivity modeling was feasible.

  9. Study of pore fluid circulation in the uppermost part of the subducting plate and its influence on seismogenic zone of large thrust earthquakes

    Grant number:15H03715  2015.4 - 2018.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    YAMANO Makoto, UYESHIMA Makoto, TAKEI Yasuko, ICHIHARA Hiroshi, KODAIRA Shuichi, GOTO Shusaku

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    Authorship:Collaborating Investigator(s) (not designated on Grant-in-Aid) 

    We revealed that heat flow significantly varies at a scale of 3 to 5 km on the incoming Pacific plate seaward of the Japan Trench. The short-wavelength heat flow variation can be attributed to heterogeneity in development of fractures and fluid circulation in oceanic crust due to bending of the plate near the trench. We also estimated the electrical resistivity structure seaward of the Japan Trench using electromagnetic survey data and could obtain information on water distribution in the upper part of the Pacific plate and its variation toward the trench.

  10. Exploring Large Igneous Provinces: Determination of crust and mantle structure beneath the Ontong Java Plateau by marine geophysical observation

    Grant number:15H03720  2015.4 - 2018.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    SUETSUGU Daisuke, SUGIOKA Hiroko, ITO Aki, ISSE Takehi, BABA Kiyoshi, ICHIHARA Hiroshi, TADA Noriko, TANAKA Satoru, ISHIHARA Yasushi, OBAYASHI Masayuki, TONEGAWA Takashi, NAKANISHI Masao, MIURA Seiichi, UTADA Hisashi, SANO Takashi, Shen Yang, Harmon Nick

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    We performed seismological and electromagnetic observation on seafloor and islands in the Ontong Java Plateau (OJP) region from 2014 to 2017. Preliminary results of data analyses indicate that the cold Pacific slab is stagnant at depths around 600 km beneath the OJP. Low-velocity anomalies surround the OJP at depths shallower than 400 km. It may suggest that a mantle upwelling from the bottom of the mantle transition zone or the core-mantle boundary ascends, makes its way around the stagnant Pacific slab, and reaches to the Earth’s surface around the OJP. Seismic attenuation indicates stronger attenuation in the mantle beneath regions surrounding the OJP than that beneath the OJP, supporting the hypothesis described above. In addition, we confirm that a thick Moho discontinuity (~40 km) and mid-crust discontinuity beneath the OJP.

  11. 日本周辺でのアレイ電磁気観測(JEMINI計画)のための基礎的研究

    2014 - 2016

    科学研究費補助金  基盤研究(B)

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  12. 海沈み込むプレートにおける含水・脱水プロセス~海底電磁気観測からのアプローチ~

    2012 - 2013

    科学研究費補助金  新学術領域研究

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    Authorship:Principal investigator 

    新学術領域研究「地殻流体:その実態と沈み込み変動への役割」の公募研究課題

  13. 海底電磁気観測による沈み込み帯全域の流体分布の解明

    2010 - 2011

    科学研究費補助金  新学術領域研究

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    Authorship:Principal investigator 

    新学術領域研究「地殻流体:その実態と沈み込み変動への役割」の公募研究課題

  14. 物理探査・地質情報の統合解析による内陸地震発生帯の3次元イメージング

    2006 - 2007

    科学研究費補助金 

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    Authorship:Principal investigator 

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Teaching Experience (On-campus) 6

  1. 地球惑星科学セミナー I

    2022

  2. 地球惑星科学セミナー I

    2020

  3. 地球惑星科学セミナー I

    2019

  4. 地球惑星物理学実験法及び実験Ⅰ

    2019

  5. 地球惑星物理学実験法及び実験Ⅰ

    2018

  6. 地球惑星科学セミナー I

    2018

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Teaching Experience (Off-campus) 2

  1. 電磁気で地球を探る

    2022.9 Shizuoka University)

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    Level:Undergraduate (specialized)  Country:Japan

  2. 海洋理工学演習

    2017.4 - 2018.3 Kobe University)

 

Social Contribution 4

  1. 西之島火山−その謎に海と空から迫る−

    Role(s):Lecturer

    名古屋大学出前授業  豊橋市自然史博物館  2022.12

  2. 2020年度火山学会LOC(親子実験担当)

    Role(s):Presenter, Planner, Organizing member

    2020.10

  3. 地球電磁気・地球惑星圏学会アウトリーチ部会

    Role(s):Planner, Organizing member, Demonstrator

    2020.10

  4. 地震学夏の学校運営委員

    Role(s):Planner, Organizing member, Investigater

    2015.4 - 2015.9

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    Audience: College students, Graduate students, Teachers, Researchesrs

Media Coverage 1

  1. 東日本大震災で発生した津波が巨大化した原因となった場所を特定(文部科学省記者クラブ)

    2013.10

Academic Activities 2

  1. 地球電磁気・地球惑星圏学会将来構想検討WG

    Role(s):Planning, management, etc.

    2018

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    Type:Academic society, research group, etc. 

  2. 物理探査学会会誌編集委員 International contribution

    Role(s):Planning, management, etc., Peer review

    2013