研究業績

査読付き学術論文

代田　寧，大場　武，菊川城司，板寺一洋
箱根カルデラ西部の湖尻・芦ノ湖地区の温泉水に溶存している炭酸成分の起源に関する一考察
温泉科学（受理済）

Takeshi Ohba, Kenji Nogami, Jun-ichi Hirabayashi, Takeshi Sawa, Kohei Kazahaya, Noritoshi Morikawa, Michiko Ohwada
Chemical and isotopic composition of fumarolic gases at Iwate volcano, Japan, during and after seismic activity in 1998: implications for the modification of ascending volcanic gases.
ANNALS OF GEOPHYSICS (2011) 54, 187-197 ; doi: 10.4401/ag-5182

Takeshi OHBA, Yasushi Daita, Takeshi Sawa, Noriyasu Taira, Yusuke Kakuage
Coseismic changes in the chemical composition of volcanic gases from the Owakudani geothermal area on Hakone volcano, Japan.
Bull Volcanol (2011) 73:457–469

Takeshi OHBA, Takeshi SAWA, Noriyasu TAIRA, Tsanyao Frank YANG, Hsiao Fen LEE, Tefang Faith LAN, Michiko OHWADA, Noritoshi MORIKAWA, Kohei KAZAHAYA
Magmatic fluids at Tatun volcanic group, Taiwan
Applied Geochemistry (2010) 25, 513-523.

Minoru KUSAKABE, Keisuke NAGAO, Takeshi OHBA, Jung-Hun Seo, Sung-Hyun Park, JongIk Lee, and Byong-Kwon Park
Noble gas and stable isotope geochemistry of thermal fluids from Deception Island, Antarctica
Antarctic Science, 1-13 (2009) doi:10.1017/S0954102009001783.

Takeshi OHBA, Jun-ichi HIRABAYASHI and Kenji NOGAMI
Temporal changes in the chemistry of lake water within Yugama Crater, Kusatsu-Shirane Volcano, Japan: Implications for the evolution of the magmatic hydrothermal system
J.Volcanol.Geotherm.Res. (2008) 178, 131-144.

Takeshi Ohba, ,Jun-ichi Hirabayashi, Kenji Nogami, Minoru Kusakabe and Minoru Yoshida
Magma degassing process during the eruption of Mt. Unzen, Japan in 1991 to 1995: Modeling with the chemical composition of volcanic gas
J.Volcanol.Geotherm.Res. (2008) 175, 120-132.

Takeshi Ohba, Kenji Nogami, Jun-Ichi Hirabayashi and Takehiko Mori
Isotopic fractionation of SO2 and H2S gases during the absorption by KOH solution, with the application to volcanic gas monitoring at Miyakejima Island, Japan
Geochemical Journal (2008) 42, 119-131.

Minoru Kusakabe, Takeshi Ohba, Issa, Yutaka Yoshida, Hiroshi Satake, Tsuyoshi Ohizumi,William C. Evans, Gregory Tanyileke and George W. Kling
Evolution of CO2 in Lakes Monoun and Nyos, Cameroon, before and during controlled degassing
Geochemical Journal (2008) 42, 93-118.
日本語解説

Hiroshi Shinohara, Takeshi Ohba, Kohei Kazahaya and Hiroshi Takahashi
Origin of volcanic gases discharging from a cooling lava dome of Unzen volcano, Japan
J.Volcanol.Geotherm.Res. (2008) 175, 133-140.
日本語解説

Formation process of recent fumarolic gases at the Mt. Mihara summit peak of the Izu-Oshima volcano, Japan
Takeshi Ohba
Earth Planets Space, Vol. 59 (No. 10), pp. 1127-1133 (2007)
日本語解説

箱根カルデラ中央火口丘熱水系における火山性流体の化学的進化
大場武，澤毅，平徳泰，大和田道子，森川徳敏，風早康平
神奈川県温泉地学研究所報告，第39 巻，1-42 (2007)
日本語解説

The Hydrothermal System Beneath Owakudani on Hakone Volcano, Japan;
Traced by Stable Isotopic Ratios of H2O
T. SAWA, T. OHBA and Jun-ichi HIRABAYASHI
J. Nuclear Sci. Tech., 43, 468?473 (2006)

Degassing Lakes Nyos and Monoum: Defusing certain disaster
Kling, G.W., Evance, W.C., Tanyileke, G., Kusakabe, M., Ohba, T., Yoshida, Y.
PANAS, 102, 14185-14190 (2005)
日本語解説

Bathymetric and geochemical investigation of Kawah Ijen crater lake, East Java, Indonesia B.Takano, K.Suzuki, K.Sugimori, T.Ohba, S.M.Fazlullin, A.Bernard, S.Sumarti, R.Sukhyar, M.Hirabayashi
J.Volcanol.Geotherm.Res., 135, 299-329 (2004)

Formation of acid volcanic brines through interaction of magmatic gases, seawater, and rock within the WhiteIsland volcanic-hydrothermal system, New Zealand
Giggenbach,W., Shinohara,H., Kusakabe,M., Ohba,T.
Soc.Econ.Geol.Special Pub., 10, 19-40 (2003)

Interaction between magmatic fluid and meteoric water, inferred from 18O/16O and 36Ar/H2O ratios of fumarolic gases at the Kusatsu-Shirane volcano, Japan
Ohwada,M., Ohba,T., Hirabayashi,J., Nogami,K., Nakamura,K., Nagao,K.
EPS, 55, 105-110 (2003)

有珠山2000年噴火における地球化学的研究－火山灰付着水溶成分の変動と火山活動
野上健治，平林順一，大場武，安孫子勤，岡田弘，西村裕一，前川徳光，鈴木敦生
火山, 47, p325-332 (2002)

Temporal variation in constituents of volcanic ash and adherent watersoluble components in the Unzen Fugendake eruption during 1990-1991.
Nogami,K., Hirabayashi,J., Ohba,T., Ossaka,J., Yamamoto,M., Akagi,S., Ozawa,T., Yoshida,M.
EPS, 53, 723-730 (2001)

D/H and 18O/16O ratios of water in the crater lake at Kusatsu-Shirane volcano, Japan.
Ohba,T., Hirabayashi,J. and Nogami,K.
J.Volcanol.Geotherm.Res., 97, 329-346 (2000)

The 1997 phreatic eruption of Akita-Yakeyama volcano, northeast Japan: Insight into the hydrothermal processes.
Nogami,K., Hirabayashi,J.,Ohba,T. and Yoshiike,Y.
Earth Planets Space, 52, 229-236 (2000)

草津白根山の火山熱水系
大場　武，平林順一，野上健治
温泉科学，49, 163-175 (2000)

万代鉱温泉の湧出に伴う草津温泉源泉群の水質変化について
小坂丈予，小坂知子，平林順一，大井隆夫，大場武，野上健治，木川田喜一，飛田典子
温泉科学，47，166-178 (1998)

Hydrothermal system of the Kirishima volcanic area inferred from the chemical and isotopic composition of spring waters and fumarolic gases
Ohba,T., Nogami,K. and Hirabayashi,J.
Bull. Volcanol. Soc. Japan, 42, 1-15 (1997)

高温の火山ガスにおける化学平衡.
大場　武
地球化学, 31, 99-110 (1997)

群馬県草津白根山火口湖”湯釜”の水質変化と火山活動.
小坂丈予，小坂知子，平林順一，大井隆夫，大場武，野上健治，木川田喜一，山野眞由美，油井瑞明，福原英城
地球化学, 31, 119-128 (1997)

人工地震探査による霧島火山群の地震波速度構造―はぎとり法による解析―
筒井智樹，鍵山恒臣，三ヶ田均，森田裕一，松島健，井口正人，及川純，山岡耕春，熊谷博之，西村裕一，宮町宏樹，渡辺了，西村大志，高木朗充，山本圭吾，浜口博之，岡田弘，前川徳光，大島弘光，植木貞人，橋本恵一，仁田喜昭，茂原論，中道治久，汐見勝彦，中原恒，青木重樹，青地秀雄，井田喜明，渡辺秀文，鬼澤真也，長田昇，行田紀也，辻浩，山口勝，増谷文雄，西富一平，井上智広，伊藤渉，奥田隆，宮島力雄，柴田元衛，亀頭直，鶴我佳代子，前田実利，清水洋，松尾のり道，馬越孝道，内田和也，奥村貴史，柴田学，須藤靖明，吉川慎，山田年広，森健彦，松本良浩，高岡鉄朗，ﾑﾊﾏﾄﾞ ﾍﾝﾄﾞﾗｽﾄ，平野船一郎，八木原寛，上野寛，石原和彦，森博一，平林順一，大場武，野上健治，森俊哉，佐藤雅規，富永貞男
火山, 41, 227-241 (1996)

Handling of Pt catalyst in H2-H2O equilibrium method for D/H measurement of water.
Ohba,T. and Hirabayashi,J.
Geochim. J., 30, 373-377 (1996)

1991-1992年霧島新燃岳の活動と火山ガス組成.
平林順一，大場　武，野上健治
火山，41, 263-267 (1996)

Diffusional 18O loss from inclusion water in a natural hydrothermal quartz from the Kaneuchi tungsten deposit, Japan.
Ohba,T., Kazahaya,K. and Matsuo,S.
Geochim. Cosmochim. Acta, 59, 3039-3047 (1995)

Discharge rate of SO2 from Unzen volcano, Kyushu, Japan.
Hirabayashi,J., Ohba,T. and Nogami,K.
Geophy. Res. Lett., 22, 1709-1712 (1995)

Water, heat and chloride budgets of the crater lake, Yugama at Kusatsu-Shirane volcano, Japan.
Ohba,T., Hirabayashi,J. and Nogami,K.
Geochim. J., 28, 217-231 (1994)

Equilibrium temperature and redox state of volcanic gas at Unzen volcano, Japan.
Ohba,T., Hirabayashi,J. and Yoshida,Y.
J. Volcanol. Geotherm. Res., 60, 263-272 (1994)

Carbon and helium isotopic ratios at Kusatsu-Shirane volcano, Japan.
Sano,Y., Hirabayashi,J., Ohba,T., Gamo,T.
Appl. Geochim., 9, 371-377 (1994)

Precise determination of hydrogen and oxygen isotope ratios of water in fluid inclusions of quartz and halite
Ohba,T. and Matsuo,S.
Geochim. J., 22, 55-68 (1988)

18O/16O and D/H ratio determinations for small amounts of water.
Ohba,T.
Geochim. J., 21, 183-186 (1987)

D/H study on clay minerals from the Iwami Kuroko deposit, Shimane Prefecture, Japan.
Kuroda,Y., Kida,Y., Watanabe,K., Ohba,T. and Matsuo,S.
J. Japan. Assoc. Min. Pet. Econ. Geol., 81, 302-311 (1986)