論文

• Usui, Y., Uyeshima, M., Sakanaka, S., Hashimoto, T., Ichiki, M., Kaida, T., Yamaya, Y., Ogawa, Y., Masuda, M., Akiyama, T.. New robust remote reference estimator using robust multivariate linear regression, Geophys. J. Int., 238, June 2024.
• Keiichi Ishizu, Yasuo Ogawa, Keishi Nunohara, Noriyoshi Tsuchiya, Masahiro Ichiki, Hideaki Hase, Wataru Kanda, Shinya Sakanaka, Yoshimori Honkura, Yuta Hino, Kaori Seki, Kuo Hsuan Tseng, Yusuke Yamaya, Toru Mogi. Estimation of spatial distribution and fluid fraction of a potential supercritical geothermal reservoir by magnetotelluric data: a case study from Yuzawa geothermal field, NE Japan, Journal of Geophysical Research: Solid Earth, American Geophysical Union, Volume 127, Issue 2, Feb. 2022.
• Iwamori, H, Ueki, K., Hoshide, T., Sakuma, H., Ichiki, M., Watanabe, T., Nakamura, M., Nakamura, H., Nishizawa, T., Nakao, A., Ogawa, Y., Kuwatani, T., Nagata, K., Okada, T., Takahashi, E. Simultaneous Analysis of Seismic Velocity and Electrical Conductivity in the Crust and the Uppermost Mantle: A forward Model and Inversion Based on Grid Search, Journal of Geophysical Research: Solid Earth, Sept. 2021.
• Masahiro Ichiki, Yasuo Ogawa, Toshiki Kaida, Takao Koyama, Makoto Uyeshima, Tomotsugu Demachi, Satoshi Hirahara, Yoshimori Honkura, Wataru Kanda, Toshio Kono, Masaki Matsushima, Takashi Nakayama, Syuichi Suzuki, Hiroaki Toh. Electrical image of subduction zone beneath northeastern Japan, Journal of Geophysical Research, Dec. 2015.
• Yasuo Ogawa, Masahiro Ichiki, Wataru Kanda, Masaaki Mishina, Koichi Asamori. Three-dimensional magnetotelluric imaging of crustal fluids and seismicity around Naruko volcano, NE Japan, Earth, Planets and Space, Vol. 66, Dec. 2014.
• Wang, L., A. Hitchman, Y. Ogawa, W. Siripunvaraporn, M. Ichiki, K. Fuji-ta.. A 3-D resistivity model of the Australian continent using magnetometer array data, Geophysical Journal International, Vol. 198, No. 2, p. 1171-1186, Aug. 2014.  公式リンク  
  
• Kenji Ohta, Kei Hirose, Masahiro Ichiki, Katsuya Shimizu, Nagayoshi Sata, Yasuo Ohishi. Electrical conductivities of pyrolitic mantle and MORB materials up to the lowermost mantle conditions, Earth and Planetary Science Letters, Vol. 289, pp. 497-502, 2010.

国際会議発表 (査読なし・不明)

• Wakao, N., Motoyama, A., Ichiki, M., Ogawa, Y., Uyeshima, M., Asamori, K., Uchida, T., Hase, H., Koyama, T., Sakanaka, S., Yamaya, Y., Aizawa, K., Boonchaisuk, S., Kaida, T.. A three-dimensional crustal electrical resistivity model of the seismic swarm area stimulated after 2011 Tohoku Earthquake beneath Aizu-Yonezawa-Azuma district, NE Japan, EMIW 2024, Sept. 2024.
• Masuda, S., Ogawa, Y., Ichiki, M. Fluid and melt distribution in the crust and upper mantle imaged by wide-band magnetotellurics, in NE Japan: implications for seismicity and deformation, MIW 2024, Sept. 2024.
• Yoshiya Usui, Makoto Uyeshima, Tasuku Hashimoto, Shin'ya Sakanaka, Yusuke Yamaya, Shu Kaneko, Masahiro Ichiki, Toshiki Kaida, Yuki Tomioka, Dieno Diba, Yasuo Ogawa, Shohei Kihara, Takao Koyama, Koji Miyakawa, Masataka Masuda, Keiji Hirase, Gosuke Hoshino, Kento Ide, Hayata Sato, Rentaro Shimizu, Amane Terai, Yuta Yoshie, Kei Nakayauchi, Han Song, Takahiro Akiyama, Hayato Hitotsumatsu, Norihiro Kitaoka, Takuro Kanetsuki, Ritsu Sakiyama, Akira Watanabe, Takafumi Murakita, Hiroko Tendo, Yoshiaki Harashima, Shunsuke Yaegashi, Kota Suzuki. Three-dimensional electrical resistivity structure beneath the northern Kanto region, Japan, JPGU 2024, May 2024.
• Masuda, S., Ogawa, Y., Ichiki, M.. Imaging of NE Japan volcanic arc by wide-band magnetotellurics, July 2023.
• Ichiki, M., Kaida, T., Ogawa, Y., Usui, Y.. Revisiting Strait, Coastline and Oceanic Effects of Induction Vector: From the Viewpoint of Quadrature-phase Induction Vectors in NE Japan, AGU Fall meeting 2022, Dec. 2022.
• Ogawa, Y., Masuda, S., Ichiki M.. Magnetotelluric Imaging of NE Japan Volcanic Arc and Co-seismic Deformations during the 2011 Tohoku M9 Earthquake, AGU Fall meeting 2022, Dec. 2022.
• Masuda, S., Ogawa, Y., Ichiki M.. International Joint Workshop on slow to-fast earthquakes 2022, EMIW 2022, Sept. 2022.
• Keiichi Ishizu, Yasuo Ogawa, Keishi Nunohara, Noriyoshi Tsuchiya, Masahiro Ichiki, Hideaki Hase, Wataru Kanda, Shinya Sakanaka, Yoshimori Honkura, Yuta Hino, Kaori Seki, Kuo Hsuan Tseng, Yusuke Yamaya, Toru Mogi. Estimation of spatial distribution and fluid fraction of a potential supercritical geothermal reservoir by magnetotelluric data: a case study from Yuzawa geothermal field, NE Japan, AGU 2021 Fall meeting, Dec. 2021.
• Aoi Motoyama, Masahiro Ichiki, Yasuo Ogawa, Makoto Uyeshima, Koichi Asamori, Toshihiro Uchida, Takao Koyama, Shin'ya Sakanaka, Hideaki Hase, Koki Aizawa, Yusuke Yamaya. A three-dimensional electrical conductivity model of the crust beneath the southern Tohoku district, NE Japan, JpGU-AGU Joint Meeting 2020, July 2020.
• Masato FUKAI, Yasuo OGAWA*, Kuo-Hsuan TSENG, Masahiro ICHIKI, Shinichi TAKAKURA. Magnetotelluric Imaging of Kitakami Mountains, Forearc of NE Japan, in Sereach for Water Wall, International Symposium Crustal Dynamics (ISCD-2): Toward Integrated View of Island Arc Seismogenesis, Mar. 2019.
• Yasuo OGAWA*, Masahiro ICHIKI. Electromagnetic Mapping of Geofluids Using Wideband Magnetotellurics: Implications for Seismogenesis, International Symposium Crustal Dynamics (ISCD-2): Toward Integrated View of Island Arc Seismogenesis, Mar. 2019.
• Masahiro ICHIKI*, Toshiki KAIDA, Yasuo OGAWA. A 3-D Crust and Uppermost Mantle Electrical Conductivity Model of Subduction Zone Beneath NE Japan, International Symposium Crustal Dynamics (ISCD-2): Toward Integrated View of Island Arc Seismogenesis, Mar. 2019.
• Masahiro Ichiki, Toshiki Kaida, Yasuo Ogawa. Investigation of flow reverse towards backarc side in mantle wedge: Electrical conductivity distribution of subduction zone beneath the northern part of NE Japan, AGU fall meeting, Washington DC, 2018.12., Dec. 2018.
• Fukai, M., Ogawa, Y., Tseng K.H., Bertrand, E.A., Kinoshita, Y., Ichiki, M.. MT Observations in the Kitakami Mountains, NE Japan: Heavy current channelings and 3d resistivity model, 24th EM Induction Workshop, 13–20 Aug 2018 in Helsingør, Denmark., Aug. 2018.
• Kinoshita, Y., Ogawa, Y., Ichiki, M., Fuji-ta, K., Yamaguchi, S., Umeda, K., Asamori, K.. 3D Electromagnetic Imaging of Fluid Distribution Below the Kii Peninsula, SW Japan Forearc: Implications for plate coupling, non-volcanic tremor and hot springs, 24th EM Induction Workshop, 13–20 Aug 2018 in Helsingør, Denmark, Aug. 2018.
• Yusuke Kinoshita, Yasuo Ogawa, Masahiro Ichiki, Satoru Yamaguchi, Kiyoshi Fujita, Koji Umeda, Koichi Asamori. 3D Electromagnetic Imaging of Fluid Distribution Below the Kii Peninsula, SW Japan Forearc, AGU fall meeting, New Orleans, 2017.12.13., Dec. 2017.
• Ichiki, M., T. Kaida, T. Demachi, S. Hirahara, T. Nakayama, M. Yamamoto, S. Miura, T. Moriyama, M. Akutagawa, T. Kobayashi, S. Matsuura, S. Omori, K. Ono, S. Seki, W. Kanda, K. Seki, Y. Ogawa, M. Ushioda, M. Uyeshima. Audio-frequency magnetotelluric, and total magnetic intensity observations in 2014-2016, at Zao volcano, NE Japan, AGU fall meeting, New Orleans, 2017.12.12, Dec. 2017.
• Yasuo Ogawa, Masahiro Ichiki. On the supercritical fluid under the brittle-ductile boundary imaged by magnetotelluric studies in NE Japan, 39th New Zealand Geothermal Workshop, Rotorua, New Zealand, 2017.11.22-24, Nov. 2017.
• Zenshiro Saito, Yasuo Ogawa, Masahiro Ichiki, Hideyuki Satoh. 3d distribution of fluids and their origins in a seismogenic zone, Northern Miyagi, NE Japan, IAG-IASPEI 2017, Kobe, 2017.8.2., Aug. 2017.
• Yusuke Kinoshita, Yasuo Ogawa, Zenshiro Saito, Rina Noguchi, Kiyoshi Fuji-ta, Satoru Yamaguchi, Umeda Koji, Koichi Asamori, Masahiro Ichiki. Three-dimensional geofluid distribution of Kii Peninsula, SW Japan, JpGU-AGU joint meeting 2017, Chiba, 2017.5.23., May 2017.
• Ichiki, M., Ogawa, Y., Kaida, T., Demachi, T., Hirahara, S., Honkura, Y., Ichihara, H., Kanda, W., Kono, T., Koyama, T., Matsushima, M., Nakayama, T., Suzuki, S., Toh, H., Uyeshima, M.. A mantle wedge flow model as revealed by three-dimensional electrical resistivity image beneath northeastern Japan, 2015 AGU Fall Meeting, Dec. 2015.
• Hashimoto, T., Kanda, W., Utsugi, M., Ichiki, M.. Long-term volcano-magnetic effects associated with phreatic eruptions, 26th IUGG General Assembly 2015, June 2015.

国内会議発表 (査読なし・不明)

• 深井 雅斗, 小川 康雄, TSENG Kuo-Hsuan, 市来 雅啓, Shinichi Takakura. 3D imaging of NE Japan forearc: implications for fluid distribution and transport, JpGU-AGU Joint Meeting 2020, July 2020.
• Yasuo OGAWA*, Masahiro ICHIKI. Electromagnetic Mapping of Geofluids Using Wideband Magnetotellurics: Implications for Seismogenesis, International Symposium Crustal Dynamics (ISCD-2): Toward Integrated View of Island Arc Seismogenesis, Mar. 2019.
• Zenshiro Saito, Yasuo Ogawa, Masahiro Ichiki, Hideyuki Satoh, Yusuke Kinoshita, Atsushi Suzuki, Puwis Amatyakul. 3D magnetotelluric imaging of fluid distribution in a seismogenic region, Miyagi, NE Japan, JpGU-AGU joint meeting, Chiba, 2017.5.23., May 2017.

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