谷口 無我　／　YAGUCHI Muga

事項	詳細
所属・職名	火山研究部・第三研究室・主任研究官
連絡先
個人ページ	researchmap❐
専門分野	地球化学、火山化学
学位	博士（環境学）
受賞歴、委員等	受賞 気象研究所長表彰 (2022)
発表論文	Tomoya Obase, Hirochika Sumino, Kotaro Toyama, Kaori Kawana, Kohei Yamane, Muga Yaguchi, Akihiko Terada, Takeshi Ohba (2022) Monitoring of magmatic–hydrothermal system by noble gas and carbon isotopic compositions of fumarolic gases. Scientific Reports, 12 :17967. Brice Tchakam Kamtchueng, Aicha Foupouagnigni, Mero Yannah, Josephine Ndjama, Mumbfu Ernestine Mimba, Mengnjo Jude Wirmvem, Muga Yaguchi, Gloria Eneke Takem, Andrew Ako Ako, Wilson Yetoh Fantong, Emmanuel Ngnikam, Takeshi Ohba (2022) Major ions, trace elements and stable isotope characteristics of shallow groundwater in the Bonaberi district, Douala, Cameroon. Sustainable Water Resources Management, 8;162. 北川隆洋, 風早竜之介, 谷口無我, 篠原宏志, 福岡管区気象台, 大分地方気象台 (2022) Multi-GAS 連続観測における硫化水素センサーの感度変化の影響とその補正. 火山 67, 113-123. Muga Yaguchi, Takeshi Ohba, Yasuo Hirayama, and Nozomi Numanami (2022) Volcanic ash from the June 17, 1962 eruption of Yakedake volcano: stereomicroscopic, XRD, and water-soluble components analyses. Journal of Disaster Research, 17, 257-262. Akihiko Terada, Muga Yaguchi, Takeshi Ohba (2022) Quantitative assessment of temporal changes in subaqueous hydrothermal activity in active crater lakes during volcanic unrest based on a time-series of lake water chemistry. Frontiers in Earth Science, 9:740671. doi: 10.3389/feart.2021.740671 Muga Yaguchi, Takeshi Ohba, and Akihiko Terada (2021) Groundwater interacting at depth with hot plastic magma triggers phreatic eruptions at Yugama Crater Lake of Kusatsu-Shirane volcano (Japan). Frontiers in Earth Science, 9:741742. doi: 0.3389/feart.2021.741742 代田 寧, 大場 武, 谷口 無我, 十河 孝夫, 原田 昌武 (2021) 箱根山火山ガス組成による火山活動予測—火山防災への活用—. 地学雑誌, 130, 783-796. doi: 10.5026/jgeography.130.783 Takeshi Ohba, Muga Yaguchi, Urumu Tsunogai, Masanori Ito and Ryo Shingubara (2021) Behavior of magmatic components in fumarolic gases related to the 2018 phreatic eruption at Ebinokogen Ioyama volcano, Kirishima Volcanic Group, Kyushu, Japan. Earth, Planets and Space, 73:81. 村松 容一, 谷口 無我 (2020) 山梨県増富温泉の水質形成機構. 温泉科学, 70, 124-136. Muga Yaguchi (2020) Abnormal discharge of high-temperature hot spring water observed at the abandoned well in the Okuhida hot spring area during the earthquake swarm occurred at Gifu-Nagano district, central Japan. Journal of Hot Spring Sciences, 70, 70-79. Muga Yaguchi, Akihiko Terada, and Yasuo Ogawa (2020) Air-Fall Ash from the Main Crater of Asama Volcano on August 7, 2019, and its Water-Soluble Components. Journal of Disaster Research, 15, 53-56. Muga Yaguchi, Takeshi Ohba, Nozomi Numanami and Ryohei Kawaguchi (2019) Constituent mineral and water-soluble component of volcanic ash from the 2018 eruption of Mt. Motoshirane of Kusatsu-Shirane volcano, Japan. Journal of Disaster Research, 14, 991-995. Takeshi Ohba, Muga Yaguchi, Kana Nishino, and Nozomi Numanami (2019) Time Variation in the Chemical and Isotopic Composition of Volcanic Gas at Mt. Mihara of Izu-Oshima Island, Japan. Journal of Disaster Research, 14, 972-977. Takeshi Ohba, Muga Yaguchi, Kana Nishino, Nozomi Numanami, Urumu Tsunogai, Masanori Ito and Ryo Shingubara (2019) Time variation in the chemical and isotopic composition of fumarolic gases at Kusatsu-Shirane volcano Japan. Frontiers in Earth Science, 7:249. Muga Yaguchi, Takeshi Ohba and Masakazu Sago (2019) The nature and source of the volcanic ash during the 2015 small phreatic eruption at Hakone volcano, central Japan. Geochemical Journal, 53, 209-217. Takeshi Ohba, Muga Yaguchi, Kana Nishino, Nozomi Numanami, Yasushi Daita, Chiho Sukigara, Masanori Ito and Urumu Tsunogai (2019) Time variations in the chemical and isotopic composition of fumarolic gases at Hakone volcano, Honshu Island, Japan, over the earthquake swarm and eruption in 2015, interpreted by magma sealing model. Earth, Planets and Space, 71:48. 代田寧, 大場武, 谷口無我, 十河孝夫, 原田昌武 (2020) 箱根火山大涌谷北側斜面で2017 年に観測された噴気組成（Ｃ/Ｓ比）の変動. 神奈川県温泉地学研究所報告, 51, 37-44. Minoru Kusakabe, Rosine E. Tiodjio, Bruce Christenson, Kazuto Saiki, Takeshi Ohba and Muga Yaguchi (2019) Enrichment of ferrous iron in the bottom water of Lake Nyos. Journal of African Earth Sciences, 150, 37-46. Kaori Seki, Takeshi Ohba, Shinnosuke Aoyama, Yuichiro Ueno, Hirochika Sumino, Wataru Kanda, Muga Yaguchi, Toshiya Tanbo (2019) Variations in thermal state revealed by the geochemistry of fumarolic gases and hot-spring waters of the Tateyama volcanic hydrothermal system, Japan. Bulletin of Volcanology, 81:8. Akihiko Terada, Yuichi Morita, Takeshi Hashimoto, Toshiya Mori, Takeshi Ohba, Muga Yaguchi and Wataru Kanda (2018) Water sampling using a drone at Yugama crater lake, Kusatsu-Shirane volcano, Japan. Earth, Planets and Space, 70:64. 代田 寧, 大場 武, 谷口無我 (2017) 箱根火山における活動活発化に連動した噴気組成（C/S 比）の変化. 神奈川県温泉地学研究所報告, 49, 29-38. Mengnjo Jude Wirmvem, Takeshi Ohba, Linus Anye Nche, Brice Tchakam Kamtchueng, Wiylahnyuy Edith Kongnso, Mumbfu Ernestine Mimba, Tasin Godlove Bafon, Muga Yaguchi, Gloria Eneke Takem, Wilson Yetoh Fantong, Ako Andrew Ako (2017) Effect of diffuse recharge and wastewater on groundwater contamination in Douala, Cameroon. Environmental Earth Sciences, 76, 354(1-26). 村松 容一, 谷口 無我, 千葉 仁, 奥村文章, 大場 武 (2016) 糸魚川―静岡構造線南部およびその東域における高塩化物泉の成因―中央構造線に分布する鹿塩高塩化物泉の成因の類似性―. 温泉科学, 66, 70-88. 村松 容一, 谷口 無我, 大場 武 (2016) 関東平野北部における温泉の水質および安定同位体比とその地質鉱物学的解釈. 温泉科学, 66, 4-20. 村松 容一, 谷口 無我, 大場 武 (2016) 関東平野中央部における塩化物泉の水質形成機構－続成変質による間隙水の進化－. 温泉科学, 65, 216-233. Muga Yaguchi, Yoichi Muramatsu, Hitoshi Chiba, Fumiaki Okumura and Takeshi Ohba (2016)The origin and hydrochemistry of deep well waters from the northern foot of Mt. Fuji, central Japan. Geochemical Journal, 50, 227-239. Muga Yaguchi, Yoichi Muramatsu, Hitoshi Chiba, Fumiaki Okumura, Takeshi Ohba and Masumi Yamamuro (2014) Hydrochemistry and Isotopic Characteristics of Non-Volcanic Hot Springs around the Miocene Kofu Granitic Complex Surrounding the Kofu Basin in the South Fossa Magna Region, Central Honshu, Japan. Geochemical Journal, 48, 345-356. Muga Yaguchi, Yoichi Muramatsu, Hideyuki Nagashima, Fumiaki Okumura and Masumi Yamamuro (2014) Geochemical and Isotopic Characteristics of the Mineral spring and Natural Spring Waters in the Setogawa Group in the Western Yamanashi Prefecture, Japan. Journal of Hot Spring Sciences, 64, 42-52. 谷口無我, 穴澤活郎 (2013) 干渉抑制剤共存下でのAASによるCa2+定量に及ぼす酸添加の影響. 分析化学(Bunseki Kagaku), 62, 701-705.
担当課題リスト	火山活動の監視・予測に関する研究 (副課題２：化学的手法等による火山活動監視)(令和01～05年度)