The Wiechert Seismometer displaced by the 2016 Kumamoto Earthquake.

理学研究科技術長（技術専門員）

専門業務

・地球物理学的観測全般（地震, 地殻変動, 重力, 電磁気, 熱, 試料サンプリング等）

・研究教育支援

・施設運営支援

・地域貢献

・安全衛生

・無線局管理

・Webサーバー管理

学歴・職歴

兼任

• 平成15年4月1日～平成16年3月31日　独立行政法人産業技術総合研究所　主任研究員

• 平成16年4月1日～平成21年3月31日　独立行政法人産業技術総合研究所　協力研究員

共同研究

• 平成21年4月1日～平成23年3月31日　気象庁火山噴火予知連絡会衛星解析グループ　共同研究者

• 平成21年4月1日～　産業技術総合研究所共同研究　「中部九州の活動的火山の活動評価に関する共同研究」

資格等

• 第２級陸上特殊無線技士

• 第１種衛生管理者

• 乙種４類危険物取扱者

• メンタルヘルス・マネジメントⅡ種

• ボイラー取扱作業主任者

• 労働安全衛生法による技能講習修了　酸素欠乏・硫化水素危険作業主任者

• 労働安全衛生法による安全衛生教育　刈払機取扱修了

特技

• 書道（漢字部 初等師範免許状取得）

• アイススケート

• ドローン操縦（DJI Spreading Wings S1000, Phantom3）

賞罰

• EPS Highlighted Papers 2023   Chisato Anai, Takahiro Ohkura, Shin Yoshikawa, Nobumitsu Mochizuki, 

Temporal change in rock-magnetic properties of volcanic ashes ejected during a 1-year eruption event: a case study on the Aso Nakadake 2019–2020 eruption, Earth, Planets and Space volume 75, Article number: 24 (2023)

• 2014年度日本火山学会論文賞　Keigo Yamamoto, Tadaomi Sonoda, Tetsuro Takayama, Nobuo Ichikawa, Takahiro Ohkura,

 Shin Yoshikawa, Hiroyuki Inoue, Takeshi Matsushima, Kazunari Uchida, Manami Nakamoto:

Vertical Ground Deformation Associated with the Volcanic Activity of Sakurajima Volcano, Japan during 1996-2010 as Revealed by Repeated Precise Leveling Surveys, Bull. Volcanol. Soc. Japan,58,1,137-151

• 日本地学教育学会優秀論文賞 　七輪でマグマをつくる　-身近なものを用いてマグマ形成過程を観察する-
  下岡順直・三好雅也・馬渡秀夫・吉川 慎・山本順司・渡辺克裕・齋藤武士・杉本 健・山田 誠・三好まどか・竹村恵二

• 日本陸水学会 (2010)最優秀ポスター賞受賞    九州中部の非火山地域に流出する温泉の深部起源炭素に富む炭酸成分

酒井拓哉・大沢信二・山田誠・三島壮智・吉川 慎・鍵山恒臣:

主要論文

• Shohei Narita, Akihiko Yokoo, Takahiro Ohkura, Masaaki Morita, Toshiya Mori, Shin Yoshikawa, Heat transport process associated with the 2021 eruption of Aso volcano revealed by thermal and gas monitoring, Earth Planets and Space, Volume 76, article number 62, 2024

• Chisato Anai, Takahiro Ohkura, Shin Yoshikawa, Nobutatsu Mochizuki, Temporal change in rock-magnetic properties of volcanic ashes ejected during a 1-year eruption event: a case study on the Aso Nakadake 2019-2020 eruption Earth Planets and Space 75(1) 2023

• Tsunogai, U., R. Shingubara, Y. Morishita, M. Ito, F.Nakagawa, S. Yoshikawa, M. Utsugi, and A. Yokoo (2022) Sampling volcanic plume using a drone-borne SelPS for remotely determined stable isotopic compositions of fumarolic carbon dioxide, Frontiers in Earth Science, 10, doi: 10.3389/feart.2022.833733.

• ANAI Chisato, MIYABUCHI Yasuo, UTSUGI Mitsuru, YOSHIKAWA Shin, MOCHIZUKI Nobutatsu, SHIBUYA Hidetoshi, OHKURA Takahiro. Reappraisal Eruptive Age and Classification of Holocene Volcanic Products around Nakadake Crater, Aso Volcano Using Paleomagnetic and Rock Magnetic Methods. BULLETIN OF THE VOLCANOLOGICAL SOCIETY OF JAPAN. 2021. 66. 3. 171-186

• Shingubara, R., U. Tsunogai, M. Ito, F.Nakagawa, S. Yoshikawa, M. Utsugi, and A. Yokoo (2021) Development of a drone-borne volcanic plume sampler. Journal of Volcanology and Geothermal Research, Vol. 412, 107197. [Invited Research Article]

• Kyoka Ishii, Akihiko Yokoo, Tsuneomi Kagiyama, Takahiro Ohkura, Shin Yoshikawa, Hiroyuki Inoue. Gas flow dynamics in the conduit of Strombolian explosions inferred from seismo-acoustic observations at Aso volcano, Japan. Earth, Planets and Space. 2019. 71. 1. 13

• Y.-C. Huang, T. Ohkura, T. Kagiyama, S. Yoshikawa, and H. Inoue, “Shallow volcanic reservoirs and pathways beneath Aso caldera revealed using ambient seismic noise tomography,” Earth, Planets and Space, Vol.70, Article No.169, 2018.

• Abe Y, Ohkura T, Shibutani T, Hirahara K, Yoshikawa S, Inoue H, Low-velocity zones in the crust beneath Aso caldera, Kyushu, Japan, derived from receiver function analyses, Journal of Geophysical Research: Solid Earth (2017) 122(3) 2013-2033

• Komori S, Utsugi M, Kagiyama T, Yoshikawa S, Chen C Cha, Resistivity mapping in the Tatun volcano group, Northern Taiwan, revealed by VLF-MT surveyso , Terrestrial, Atmospheric and Oceanic Sciences (2017) 28(6)

• Sofyan Y, Nishijima J, Fujimitsu Y, Yoshikawa S, Kagiyama T, Ohkura T, The oscillation model of hydrothermal dynamics beneath Aso volcano, southwest Japan after small eruption on May 2011: A new understanding model using repeated absolute and relative gravity measurement, Journal of Volcanology and Geothermal Research (2016) 310 172-185

• Murase M, Kimata F, Yamanaka Y, Horikawa S, Matsuhiro K, Matsushima T, Mori H, Ohkura T, Yoshikawa S, Miyajima R, Inoue H, Mishima T, Sonoda T, Uchida K, Yamamoto K, Nakamichi H , Preparatory process preceding the 2014 eruption of Mount Ontake volcano, Japan: Insights from precise leveling measurements 5.Volcanology, Earth, Planets and Space (2016) 68(1)

• Shinohara H, Yoshikawa S, Miyabuchi Y, Degassing activity of a volcanic crater lake: Volcanic plume measurements at the yudamari crater lake, aso volcano, Japan, Springer Berlin Heidelberg, (2015), 201-217

• Matsumoto S, Nakao S, Ohkura T, Miyazaki M, Shimizu H, Abe Y, Inoue H, Nakamoto M, Yoshikawa S, Yamashita Y, Spatial heterogeneities in tectonic stress in Kyushu, Japan and their relation to a major shear zone Seismology, Earth, Planets and Space (2015) 67(1)

• Terada A, Yoshikawa S, Oshima H, Maekawa T, Matsushima N, Airborne IR surveys of USU, Noboribetsu and Hokkaido-Komagatake volcanoes: Evaluation of heat discharge rates from steaming grounds and hot crater lakes, Journal of the Hokkaido University, Faculty of Science, Series VII: Geophysics (2012) (75)

• Ohsawa, S., Sakai, T., Yamada, M., Mishima, T., Yoshikawa, S., Kagiyama, T. (2011) Dissolved inorganic carbon rich in mantle component of hot spring waters from the Hitoyoshi Basin in a non-volcanic region of central Kyushu, Japan. J. Hot spring Science, 60, 410-417

• Yamada M, Ohsawa S, Kazahaya K, Yasuhara M, Takahashi H, Amita K, Mawatari H, Yoshikawa S, Mixing of magmatic CO2 into volcano groundwater flow at Aso Volcano assessed combining carbon and water stable isotopes. (2010) Journal of Geochemical Exploration : DOI 10.1016/j.gexplo.2010.10.007

• Ohsawa, S., Saito, T., Yoshikawa, S., Mawatari, H., Takamatsu, N., Sudo, Y., Kagiyama, T, Color change of lake water in response to subaqueous fumarole activity at the active crater lake of Aso volcano, Yudamari, Japan. (2009) . Limnology, accepted for publication on 26 Oct. 2009：DOI 10.1007/s10201-009-0304-6

• S.Ohsawa, T.Saito, S.Yoshikawa, H.Mawatari, M.Yamada, K.Amita, N.Takamatsu, Y.Sudo, T.Kagiyama (2009): Color change of lake water at the active crater lake of Aso volcano, Yudamari, Japan., , Limnology DOI 10.1007/s10201-009-0304-6

• Mori, T., Sudo, Y., Tsutsui, T. and Yoshikawa, S., Characteristics of isolated hybrid tremor (HBT)during a calm activity period at Aso Volcano, Bull. Volcano., 2008, 70, 1031-1042 (DOI10.1007/s00445-007-0185-7).

• Mori, T., Suzuki, T., Hirabayashi, J., Nogami, K., Ohwada, M., and Yoshikawa, S., Depthestimation of fumarolic gas source deduced by fume pressure measurement, Earth, Planets andSpace, 2008, 60 (No. 8), 889-893.

• Mori, T., Mori, T., Kazahaya, K., Ohwada, M., Hirabayashi, J. and Yoshikawa, S., Effect of UVscattering on SO2 emission rate measurements, Geophys. Res. Lett., 2006, 33, No. 17, L17315,DOI: 10.1029/2006GL026285.

• Takagi, N., Kaneshima, S., Kawakatsu, H., Yamamoto, M., Sudo, Y., Ohkura, T., Yoshikawa, S., and Mori, T, Apparent migration of tremor source synchronized with the change in the tremor amplitude observed at Aso volcano, Japan, J.Volcanol Geotherm. Res., 2006, 154, 181-200.

• Yamamoto, M., Kawakatsu, H., Kaneshima, S., Iidaka, T., Oikawa, J., Watada, S., Morita, Y.,Mori, T., Tsutsui, T., Sudo, Y., Yoshikawa, S., Hashimoto, T. and Nakaboh, M, ASOBOI97: Aso Seismic Observation with Broadband Instruments in 1997, Bulletin of the Earthquake ResearchInstitute, 1999, 74, 267-285.

• Sudo, Y., Ono, H., Hurst, A. W., Tsutsui, T., Mori, T., Nakaboh, M., Matsumoto, Y., Sako, M.,Yoshikawa, S., Tanaka, M., Kobayashi, Y., Hashimoto, T., Hoka, T., Yamada, T., Masuda, H.and Kikuchi, S., Seismic activity and ground deformation associated with 1995 phreatic eruptionof Kuju Volcano, Kyushu, Japan. J. Volcanol?Geotherm. Res., 1998, 81, 245-267.