Observation of dissolved gases in a hot spring using the passive diffusion sampler

• Project/Area Number: 18K11614
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 63010:Environmental dynamic analysis-related
• Research Institution: The University of Tokyo
• Principal Investigator: Takahata Naoto 東京大学, 大気海洋研究所, 助教 (90345059)
• Co-Investigator(Kenkyū-buntansha): 柴田 智郎 京都大学, 理学研究科, 准教授 (80446369)
• Project Period (FY): 2018-04-01 – 2022-03-31
• Project Status: Completed (Fiscal Year 2021)
• Budget Amount: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2018: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
• Keywords: 溶存ガス / 地下水 / 地震 / 火山

Outline of Final Research Achievements

In this study, we succeeded in observing spatial and temporal distribution of dissolved gases in a deep hot-spring well using the passive diffusion sampler. Isotopic ratios of helium and carbon indicates dissolved gases have the magmatic component.

Academic Significance and Societal Importance of the Research Achievements

本研究で採用した受動拡散サンプラーを用いた方法は、従来の試料採取とは異なり、採水の必要がないため他の場所からの汚染がなく、特殊な知識や器具が必要ないこと、分析においても溶存ガスを分離する手間がなく簡便であるため、地下水の溶存ガスを観測する上で多くの人の役に立つことが期待される。また温泉水の溶存ガスを時空間的に観測することで、地震や火山の活動を解明する手がかりとなる可能性があることを示すことができた。

Research Products

• [Int'l Joint Research] 水圏科学技術研究所(スイス)
• [Journal Article] Monitoring the magmatic activity and volatile fluxes of an actively degassing submarine caldera in southern Japan (2022)
  • Author(s): Nakajima Ma. Teresa Escobar、Takahata Naoto、Shirai Kotaro、Kagoshima Takanori、Tanaka Kentaro、Obata Hajime、Sano Yuji
  • Journal Title: Geochimica et Cosmochimica Acta Volume: 317 Pages: 106-117
  • DOI: 10.1016/j.gca.2021.10.023
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Long-term changes in unconfined groundwater level in the southern Beppu volcanic fan (2021)
  • Author(s): 梁熙俊、柴田智郎
  • Journal Title: Journal of Groundwater Hydrology Volume: 63 Issue: 3 Pages: 151-157
  • DOI: 10.5917/jagh.63.151
  • NAID: 130008091202
  • ISSN: 0913-4182, 2185-5943
  • Year and Date: 2021-08-31
  • Peer Reviewed / Open Access
• [Journal Article] Mantle-derived helium released through the Japan trench bend-faults (2021)
  • Author(s): Park Jin-Oh、Takahata Naoto、Jamali Hondori Ehsan、Yamaguchi Asuka、Kagoshima Takanori、Tsuru Tetsuro、Fujie Gou、Sun Yue、Ashi Juichiro、Yamano Makoto、Sano Yuji
  • Journal Title: Scientific Reports Volume: 11 Issue: 1 Pages: 12026-12026
  • DOI: 10.1038/s41598-021-91523-6
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Observation of the deep Indonesian throughflow using helium isotopes (2021)
  • Author(s): Escobar Ma. Teresa、Takahata Naoto、Obata Hajime、Sano Yuji
  • Journal Title: Journal of Oceanography Volume: 77 Issue: 1 Pages: 93-101
  • DOI: 10.1007/s10872-020-00560-8
  • NAID: 40022471987
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Groundwater oxygen anomaly related to the 2016 Kumamoto earthquake in Southwest Japan (2020)
  • Author(s): SANO Yuji、ONDA Satoki、KAGOSHIMA Takanori、MIYAJIMA Toshihiro、TAKAHATA Naoto、SHIBATA Tomo、NAKAGAWA Chika、ONOUE Tetsuji、KIM Nak Kyu、LEE Hyunwoo、KUSAKABE Minoru、PINTI Daniele L.
  • Journal Title: Proceedings of the Japan Academy, Series B Volume: 96 Issue: 7 Pages: 322-334
  • DOI: 10.2183/pjab.96.024
  • NAID: 130007887001
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Groundwater Anomaly Related to CCS-CO2 Injection and the 2018 Hokkaido Eastern Iburi Earthquake in Japan (2020)
  • Author(s): Sano Yuji、Kagoshima Takanori、Takahata Naoto、Shirai Kotaro、Park Jin-Oh、Snyder Glen T.、Shibata Tomo、Yamamoto Junji、Nishio Yoshiro、Chen Ai-Ti、Xu Sheng、Zhao Dapeng、Pinti Daniele L.
  • Journal Title: Frontiers in Earth Science Volume: 8 Pages: 611010-611010
  • DOI: 10.3389/feart.2020.611010
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Mantle helium in Southern Quebec groundwater: A possible fossil record of the New England hotspot (2020)
  • Author(s): Mejean Pauline、Pinti Daniele L.、Kagoshima Takanori、Roulleau Emilie、Demarets Laura、Poirier Andre、Takahata Naoto、Sano Yuji、Larocque Marie
  • Journal Title: Earth and Planetary Science Letters Volume: 545 Pages: 116352-116352
  • DOI: 10.1016/j.epsl.2020.116352
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Helium Isotopic Signature of a Plate Boundary Suture in an Active Arc - Continent Collision (2020)
  • Author(s): Chen Ai-Ti、Sano Yuji、Byrne Timothy B.、Takahata Naoto、Yang Tsanyao Frank、Wang Yunshuen、Shen Chuan-Chou
  • Journal Title: ACS Earth and Space Chemistry Volume: 4 Issue: 8 Pages: 1237-1246
  • DOI: 10.1021/acsearthspacechem.0c00038
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Mantle-Derived Helium Emission near the Pohang EGS Site, South Korea: Implications for Active Fault Distribution (2020)
  • Author(s): Kim Heejun、Lee Hyunwoo、Lee Jaemin、Lee Hyun A.、Woo Nam Chil、Lee Youn-Soo、Kagoshima Takanori、Takahata Naoto、Sano Yuji
  • Journal Title: Geofluids Volume: 2020 Pages: 1-14
  • DOI: 10.1155/2020/2359740
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Fluid Dynamics along the Nankai Trough: He Isotopes Reveal Direct Seafloor Mantle-Fluid Emission in the Kumano Basin (Southwest Japan) (2020)
  • Author(s): Tomonaga Yama、Yagasaki Kazuhiro、Park Jin-Oh、Ashi Juichiro、Toyoda Shin、Takahata Naoto、Sano Yuji
  • Journal Title: ACS Earth and Space Chemistry Volume: 4 Issue: 11 Pages: 2105-2112
  • DOI: 10.1021/acsearthspacechem.0c00229
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Aquifer classification and pneumatic diffusivity estimation using periodic groundwater level changes induced by barometric pressure (2020)
  • Author(s): Yang Heejun、Shibata Tomo
  • Journal Title: Hydrological Research Letters Volume: 14 Issue: 3 Pages: 111-116
  • DOI: 10.3178/hrl.14.111
  • NAID: 130007896212
  • ISSN: 1882-3416
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Hydrogeochemical processes and long-term effects of sea-level rise in an uplifted atoll island of Minami-Daito, Japan (2020)
  • Author(s): Yang Heejun、Kagabu Makoto、Okumura Azusa、Shimada Jun、Shibata Tomo、Pinti Daniele L.
  • Journal Title: Journal of Hydrology: Regional Studies Volume: 31 Pages: 100716-100716
  • DOI: 10.1016/j.ejrh.2020.100716
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Freshwater lens oscillation induced by sea tides and variable rainfall at the uplifted atoll island of Minami-Daito, Japan (2020)
  • Author(s): Yang Heejun、Shimada Jun、Shibata Tomo、Okumura Azusa、Pinti Daniele L.
  • Journal Title: Hydrogeology Journal Volume: 28 Issue: 6 Pages: 2105-2114
  • DOI: 10.1007/s10040-020-02185-z
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] 別府南部における不圧地下水位の周期変動解析 (2020)
  • Author(s): 梁熙俊，柴田智郎
  • Journal Title: 大分県温泉調査研究会報告 Volume: 71 Pages: 39-44
  • Open Access
• [Journal Article] 大分県内の火山岩類の化学組成・Sr-Nd同位体比（４）九重山その２ (2020)
  • Author(s): 藤原涼太郎，芳川雅子，柴田知之，柴田智郎，竹村恵二
  • Journal Title: 大分県温泉調査研究会報告 Volume: 71 Pages: 47-51
  • Open Access
• [Journal Article] Coseismic changes in groundwater level during the 2018 Hokkaido Eastern Iburi earthquake. Earth, Planets and Space (2020)
  • Author(s): Shibata T., Takahashi R., Takahashi H., Kagoshima T., Takahata N., Sano Y. and Pinti D.L.
  • Journal Title: Earth, Planets and Space Volume: 72 Issue: 1 Pages: 23-23
  • DOI: 10.1186/s40623-020-01152-y
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The bromine and chlorine isotopic composition of the mantle as revealed by deep geothermal fluids (2020)
  • Author(s): Pinti D.L., Shouakar-Stash O., Castro M.C., Lopez-Hernandez A., Hall C.M., Rocher O., Shibata T. and Ramirez-Montes M.
  • Journal Title: Geochimica et Cosmochimica Acta Volume: 276 Pages: 14-30
  • DOI: 10.1016/j.gca.2020.02.028
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Coseismic groundwater drawdown along crustal ruptures during the 2016 Mw 7.0 Kumamoto Earthquake (2019)
  • Author(s): Hosono T., Yamada C., Shibata T., Tawara Y., Wang C.‐Y., Manga M., Rahman A.T.M.S. and Shimada J.
  • Journal Title: Water Resources Research Volume: 55 Issue: 7 Pages: 5891-5903
  • DOI: 10.1029/2019wr024871
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Mantle degassing along strike-slip faults in the Southeastern Korean Peninsula (2019)
  • Author(s): Lee H., Kim H., Kagoshima T., Park J., Takahata N. and Sano Y.
  • Journal Title: Scientific Reports Volume: 9 Issue: 1 Pages: 15334-15334
  • DOI: 10.1038/s41598-019-51719-3
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Mantle fluids associated with crustal-scale faulting in a continental subduction setting, Taiwan (2019)
  • Author(s): Chen A., Shen C., Byrne T.B., Sano Y., Takahata N., Yang T.F. and Wang Y.
  • Journal Title: Scientific Reports Volume: 9 Issue: 1 Pages: 10805-10805
  • DOI: 10.1038/s41598-019-47070-2
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Secular variations of helium and nitrogen isotopes related to the 2015 volcanic unrest of Mt. Hakone, central Japan (2019)
  • Author(s): Kagoshima T., Sano Y., Takahata N., Lee H., Lan T. and Ohba T.
  • Journal Title: Geochemistry, Geophysics, Geosystems Volume: 20
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Assessment of Helium Isotopes near the Japan Trench 5 Years after the 2011 Tohoku-Oki Earthquake (2019)
  • Author(s): Escobar Ma Teresa、Takahata Naoto、Kagoshima Takanori、Shirai Kotaro、Tanaka Kentaro、Park Jin-Oh、Obata Hajime、Sano Yuji
  • Journal Title: ACS Earth and Space Chemistry Volume: 3 Issue: 4 Pages: 581-587
  • DOI: 10.1021/acsearthspacechem.8b00190
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] 大分県内の火山岩類の化学組成・Sr-Nd同位体比（４）九重山 (2019)
  • Author(s): 芳川雅子, 藤原涼太郎, 柴田知之, 柴田智郎, 竹村恵二
  • Journal Title: 大分県温泉調査研究会報告 Volume: 70 Pages: 47-51
  • NAID: 40022062220
• [Journal Article] Variability of deep carbon sources in Mexican geothermal fluids (2019)
  • Author(s): Richard L., Pinti D.L., Helie J., Hernandez A.L., Shibata T., Castro M.C., Sano Y., Shouakar-Stash O., Sandoval-Medina F.
  • Journal Title: Journal of Volcanology and Geothermal Research Volume: 370 Pages: 1-12
  • DOI: 10.1016/j.jvolgeores.2018.11.026
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Distribution of helium-3 plumes and deep-sea circulation in the central Indian Ocean. (2018)
  • Author(s): Takahata, N., Hara, T., Shirai, K., Ohmori, K., Obata, H., Gamo, T., and Sano, Y.
  • Journal Title: Terrestrial, Atmospheric and Oceanic Sciences Volume: 29 Issue: 3 Pages: 1-10
  • DOI: 10.3319/tao.2017.10.21.02
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Groundwater oxygen isotope anomaly before the M6.6 Tottori earthquake in Southwest Japan (2018)
  • Author(s): Onda S., Sano Y., Takahata N., Kagoshima T., Miyajima T., Shibata T., Pinti D.L., Lan T., Kim N.K., Kusakabe M., Nishio Y.
  • Journal Title: Scientific Reports Volume: 8 Issue: 1 Pages: 14800-14800
  • DOI: 10.1038/s41598-018-23303-8
  • NAID: 120006532081
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Noble gas and carbon isotopic compositions of petit-spot lavas from southeast of Marcus Island (2018)
  • Author(s): Yamamoto J., Kawano T., Takahata N., Sano Y.
  • Journal Title: Earth and Planetary Science Letters Volume: 497 Pages: 139-148
  • DOI: 10.1016/j.epsl.2018.06.020
  • Peer Reviewed
• [Journal Article] Direct tritium emissions to the ocean from the Fukushima Dai-ichi nuclear accident (2018)
  • Author(s): T. Takahata, Y. Tomonaga, Y. Kumamoto, M. Yamada, Y. Sano
  • Journal Title: GEOCHEMICAL JOURNAL Volume: 52 Issue: 2 Pages: 211-217
  • DOI: 10.2343/geochemj.2.0499
  • NAID: 130006708583
  • ISSN: 0016-7002, 1880-5973
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] CO2 Emissions of the Tauhara Geothermal Systems, Taupo Volcanic Zone, New Zealand (2021)
  • Author(s): T.J. Yang, I. Chambefort, A. Mazot, M. Rowe, C. Werner, T. Fischer, N. Takahata, J. Seastres, T. Brakenrig, N. MacDonald, L. Coup
  • Organizer: Geoscience Society of New Zealand, Annual Conference
• [Presentation] 種子島沖海底泥火山における表層堆積物中の希ガスの起源 (2021)
  • Author(s): 満留由来、土岐知弘、鹿児島渉悟、高畑直人、佐野有司、Tomonaga Yama
  • Organizer: JpGU
• [Presentation] Monitoring the magmatic activity and volatile fluxes of Wakamiko Caldera in southern Japan (2021)
  • Author(s): T. Escobar, N. Takahata, K. Shirai, T. Kagoshima, K. Tanaka, H. Obata, Y. Sano
  • Organizer: JpGU
• [Presentation] The roots of helium in surface sediments of submarine mud volcanoes off Tanegashima (2021)
  • Author(s): Y. Mitsutome, T. Toki, T. Kagoshima, N. Takahata, Y. Sano, Y. Tomonaga, A. Ijiri
  • Organizer: AGU fall meeting
  • Int'l Joint Research
• [Presentation] Helium isotopic signature in the Ilan Plain, NE Taiwan: geochemical evidences of a magmatic source (2021)
  • Author(s): A.-T. Chen, Y. Sano, C.-H. Chen, N. Takahata, C.-H. Lo, T.F. Yang, T.-K. Liu, Y. Wang
  • Organizer: Goldschmidt Conference
  • Int'l Joint Research
• [Presentation] Latent magmatism in non-volcanic areas in South Korea (2021)
  • Author(s): H. Kim, H. Lee, J. Hong, J.-H. Song, N. Takahata and Y. Sano
  • Organizer: Goldschmidt Conference
  • Int'l Joint Research
• [Presentation] Groundwater anomaly related to CCS-CO injection and the 2018 Hokkaido Eastern Iburi earthquake in Japan (2021)
  • Author(s): Y. Sano, T. Kagoshima, N. Takahata, K. Shirai, J.-O. Park, G.T. Snyder, T. Shibata, J. Yamamoto, Y. Nishio, A.-T. Chen, S. Xu, D. Zhao and D.L. Pinti
  • Organizer: Goldschmidt Conference
  • Int'l Joint Research
• [Presentation] High 3He/4He ratios in pore fluids at the outer slope of the Japan Trench (2021)
  • Author(s): T. Kagoshima, J.-O. Park, N. Takahata, M. Yamano, Y. Sano
  • Organizer: Goldschmidt Conference
  • Int'l Joint Research
• [Presentation] 地震波により誘発される地下水中二酸化炭素の気泡成長シミュレーション (2021)
  • Author(s): 服部匠哉、柴田智郎
  • Organizer: 日本地球化学会
• [Presentation] 別府南部地域における不圧地下水位の周期変動について (2021)
  • Author(s): 梁熙俊、柴田智郎
  • Organizer: 日本地下水学会2021年秋季講演会
• [Presentation] 温泉深井戸における溶存ガスの濃度および同位体の時空間分布：受動拡散サンプラーを用いた観測 (2020)
  • Author(s): 高畑直人, 柴田智郎, 佐野有司
  • Organizer: 日本地球化学会年会
• [Presentation] Helium and CO2 fluxes in Wakamiko caldera (2020)
  • Author(s): Escobar M., Takahata N., Shirai K., Kagoshima T., Tanaka K., Obata H., Sano Y.
  • Organizer: JpGU Meeting 2020
• [Presentation] Seawater chemistry and helium isotopes in the Tatar Strait, Far Eastern Federal District, Russia (2020)
  • Author(s): Snyder G., Yatsuk A., Takahata N.,Shakirov R., Kakizaki Y., Tomaru H., Tanaka K., Obzhirov A., Sano Y., Matsumoto R.
  • Organizer: AGU Meeting 2020
  • Int'l Joint Research
• [Presentation] Groundwater Oxygen Anomaly Related to the 2016 Kumamoto earthquake in Japan (2020)
  • Author(s): Sano Y., Onda S., Kagoshima T., Takahata N., Shibata T., Nakagawa C., Onoue T., and Pinti D.L.
  • Organizer: Goldschmidt Conference 2020
  • Int'l Joint Research
• [Presentation] 温泉深井戸における溶存ガスの濃度および同位体の鉛直分布 (2019)
  • Author(s): 高畑直人, 柴田智郎, 佐野有司
  • Organizer: 日本地球化学会年会
• [Presentation] 地球科学におけるヘリウム同位体のオンサイト連続測定の重要性 (2019)
  • Author(s): 柴田智郎
  • Organizer: 第67回質量分析総合討論会
• [Presentation] 2018年北海道胆振東部地震における地下水位の変化 (2019)
  • Author(s): 柴田智郎, 高橋 良, 高橋浩晃, 鹿児島渉悟, 佐野有司, Pinti D.L.
  • Organizer: JpGU
• [Presentation] Borehole Temperature-Depth Pprofiles in a New Crater Zone formed during the 2000 Eruption of Usu Volcano, Japan (2019)
  • Author(s): Shibata, T., Takahashi, R., Takahashi, T., Akita, F.
  • Organizer: IUGG
  • Int'l Joint Research
• [Presentation] Radon measurements at Aso volcano: an experimental automatic radon station operative within the proximal zone of Nakadake (2019)
  • Author(s): CIGOLINI C., Yoshikawa S., Shibata T., Laiolo M., Coppola D.
  • Organizer: JpGU
  • Int'l Joint Research
• [Presentation] Helium isotope variations in subduction-type volcanic hydrothermal systems (2019)
  • Author(s): Sano Y., Kagoshima T., Takahata N., Onoue T., Shibata T. and Fischer T.P.
  • Organizer: JpGU
  • Int'l Joint Research
• [Presentation] Groundwater Oxygen Anomaly Related to Earthquakes in Japan (2019)
  • Author(s): Sano Y., Onda S., Kagoshima T., Takahata N., Shibata T., Nakagawa C., Onoue T. and Pinti D.L.
  • Organizer: International Conference on Gas Geochemistry 2019
  • Int'l Joint Research
• [Presentation] Helium isotope variation around caldera-type volcano (2019)
  • Author(s): Sano, Y., Kagoshima, T., Takahata, N., Onoue, T. Shibata, T., Lee, H., Fischer, T.P.
  • Organizer: AGU
  • Int'l Joint Research
• [Presentation] 2016 年熊本地震における地下水位の潮汐応答の変化 (2019)
  • Author(s): 福島宏司，柴田智郎，細野高啓，井手 淨
  • Organizer: 陸水物理学会
• [Presentation] 竹富島温泉掘削試料の鉱物学的・地球化学的特徴 (2019)
  • Author(s): 新垣典之, 土岐知弘, 大嶋将吾, 知念正昭, 坂口有人, 高畑直人, 佐野有司, 白井厚太朗, 田中健太郎
  • Organizer: JpGU
• [Presentation] Helium isotopes in Tachibana Bay and Shimabara Bay, Nagasaki (2019)
  • Author(s): Escobar M., Tomonaga Y., Obata H., Takeda S., Takahata N. and Sano Y.
  • Organizer: JpGU
• [Presentation] Understanding variations in tectonic degassing of CO2 during continental rifting (2019)
  • Author(s): Muirhead J.D., Takahata N., et al.（22人中14番目）
  • Organizer: AGU
  • Int'l Joint Research
• [Presentation] Focussed Degassing of Stored Continental Deep Carbon (2019)
  • Author(s): Fischer T.P., Takahata N., et al.（17人中6番目）
  • Organizer: AGU
  • Int'l Joint Research
• [Presentation] Temporal variations of He and N isotopes related to the 2015 hydrovolcanic eruption at Hakone volcano, central Japan (2019)
  • Author(s): Kagoshima T., Sano Y., Takahata N., Lee H., Lan T. and Ohba T.
  • Organizer: DINGUE
  • Int'l Joint Research
• [Presentation] Focussed degassing of stored carbon (2019)
  • Author(s): Fischer T.P., Takahata N., et al.（17人中6番目）
  • Organizer: Goldschmidt 2019
  • Int'l Joint Research
• [Presentation] Helium isotopic signature of the plate boundary suture in an active arc-continent collision setting, eastern Taiwan (2019)
  • Author(s): Chen, A., Shen, C.-C., Byrne, T.B., Sano, Y., Takahata, N., Yang, T.F. and Wang, Y.
  • Organizer: Goldschmidt 2019
  • Int'l Joint Research
• [Presentation] Helium isotopes reveal continuous and intensive degassing in Kagoshima Bay, Japan (2019)
  • Author(s): Escobar M., Takahata N., Shirai K., Tanaka K., Kagoshima T. Obata H. and Sano Y.
  • Organizer: Goldschmidt 2019
  • Int'l Joint Research
• [Presentation] Temporal variability and flux estimates of helium isotopes in Kagoshima Bay, southern Japan (2019)
  • Author(s): Escobar M., Takahata N., Shirai K., Tanaka K., Kagoshima T., Obata H., Sano Y.
  • Organizer: 日本地球化学会年会
• [Presentation] 2014年噴火後の御嶽山におけるヘリウム・炭素同位体変動 (2019)
  • Author(s): 鹿児島渉悟, 三木翼, 高畑直人, 佐野有司
  • Organizer: 日本地球化学会年会
• [Presentation] 大分県別府温泉におけるCO2の脱ガスについて (2018)
  • Author(s): 柴田智郎, 小川幸輝, 竹村惠二, 角野浩史
  • Organizer: 日本地球化学会
• [Presentation] 別府群発地震時の温泉水位について (2018)
  • Author(s): 柴田智郎
  • Organizer: 陸水物理研究会
• [Presentation] Groundwater helium and oxygen anomaly related to inland earthquake in Southwest Japan (2018)
  • Author(s): Sano Y., Onda S., Kagoshima T. and Takahata N.
  • Organizer: American Geophysical Union Fall Meeting
  • Int'l Joint Research
• [Presentation] Secular variations of helium and nitrogen isotopes related to the 2015 volcanic unrest of Mt Hakone, central Japan. (2018)
  • Author(s): Sano Y., Kagoshima T., Takahata N. and Ohba T.
  • Organizer: European Geosciences Union meeting
  • Int'l Joint Research
• [Presentation] Noble gas and carbon isotopic compositions of petit-spot lavas from southeast of Marcus Island. (2018)
  • Author(s): Yamamoto J., Kawano T., Takahata N. and Sano Y.
  • Organizer: Goldschmidt Conference 2018
  • Int'l Joint Research
• [Presentation] Sub-surface fluid cycling in volcanic-hydrothermal system. (2018)
  • Author(s): Sano Y., Takahata N., Kagoshima T. and Yokochi R.
  • Organizer: International workshop on tracer applications of noble gas radionuclides
  • Int'l Joint Research
• [Presentation] 別府温泉堀田・朝見川断層における二酸化炭素の脱ガス (2018)
  • Author(s): 柴田智郎, 小川幸輝, 竹村惠二, 角野浩史
  • Organizer: 日本温泉科学会
• [Presentation] CO2 degassing along the Horita-Asamigawa faults in Beppu geothermal area, Japan (2018)
  • Author(s): Ogawa K., Shibata T., Sumino H., Takemura K.
  • Organizer: JpGU
  • Int'l Joint Research
• [Presentation] Coseismic groundwater level change after the 2016 Kumamoto earthquake (2018)
  • Author(s): Hosono T., Yamada C., Shibata T., Tawara Y., Shimada J.
  • Organizer: 45th IAH Congress
  • Int'l Joint Research