Papers - TSUNOGAI Urumu
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Archaeal lipid biomarkers in near-surface sediments at a giant colony of the bivalve Calyptogena: Molecular records of a massive methane release event associated with methane hydrate dissociation Reviewed International journal
Susumu Sakata, Urumu Tsunogai, Masahiro Oba, Tomomi Ujiie, Manabu Tanahashi
Organic Geochemistry Vol. 188 page: 104739 - 104739 2024.2
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Stable isotopic evidence for the excess leaching of unprocessed atmospheric nitrate from forested catchments under high nitrogen saturation Reviewed International journal
Ding W., Tsunogai U., Nakagawa F., Sambuichi T., Chiwa M., Kasahara T., Shinozuka K.
Biogeosciences Vol. 20 ( 3 ) page: 753 - 766 2023.2
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First Measurements on Triple Oxygen Isotopes of Dissolved Inorganic Phosphate in the Hydrosphere. Reviewed International journal
Sambuichi T, Tsunogai U, Ito M, Nakagawa F
Environmental science & technology Vol. 57 ( 8 ) page: 3415 - 3424 2023.2
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Tracing the sources of excess methane in Ise and Mikawa bays using dual stable isotopes as tracers Reviewed
Hui Lan, Urumu Tsunogai, Fumiko Nakagawa, Masanori Ito, Ryo Shingubara, Yuko Miyoshi, Shuichi Hara
GEOCHEMICAL JOURNAL Vol. 57 ( 2 ) page: 59 - 72 2023
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Geochemical distribution of helium, hydrogen, carbon dioxide, and methane in Sakhalin Island mud volcanoes, hot springs, and cold seeps Reviewed International coauthorship International journal
Syrbu N.S., Snyder G.T., Shakirov R.B., Kholmogorov A.O., Zharkov R.V., Tsunogai U.
Journal of Volcanology and Geothermal Research Vol. 431 2022.11
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Volatile-Rich Hydrothermal Plumes Over the Southern Central Indian Ridge, 24°49’S: Evidence for a New Hydrothermal Field Hosted by Ultramafic Rocks Reviewed International coauthorship International journal
Surya Prakash L., John Kurian P., Resing J.A., Tsunogai U., Srinivas Rao A., Sen K., Lupton J.E., Baumberger T., Prajith A., Roy P.
Geochemistry, Geophysics, Geosystems Vol. 23 ( 10 ) 2022.10
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Tracing the source of nitrate in a forested stream showing elevated concentrations during storm events Reviewed International journal
Weitian Ding, Urumu Tsunogai, Fumiko Nakagawa, Takashi Sambuichi, Hiroyuki Sase, Masayuki Morohashi, Hiroki Yotsuyanagi
BIOGEOSCIENCES Vol. 19 ( 13 ) page: 3247 - 3261 2022.7
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Sampling Volcanic Plume Using a Drone-Borne SelPS for Remotely Determined Stable Isotopic Compositions of Fumarolic Carbon Dioxide Invited Reviewed International journal
Urumu Tsunogai, Ryo Shingubara, Yuhei Morishita, Masanori Ito, Fumiko Nakagawa, Shin Yoshikawa, Mitsuru Utsugi, Akihiko Yokoo
Frontiers in Earth Science Vol. 10 2022.3
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Nitrogen saturation of forested catchments in central Japan - Progress or recovery? Reviewed International journal
Hiroyuki Sase, Masamichi Takahashi, Kazuhide Matsuda, Naoyuki Yamashita, Urumu Tsunogai, Fumiko Nakagawa, Masayuki Morohashi, Hiroki Yotsuyanagi, Tsuyoshi Ohizumi, Keiichi Sato, Junichi Kurokawa, Makoto Nakata
Soil Science and Plant Nutrition Vol. 68 ( 1 ) page: 5 - 14 2022.1
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High-precision Δ′<sup>17</sup>O measurements of geothermal H<sub>2</sub>O and MORB on the VSMOW-SLAP scale: evidence for active oxygen exchange between the lithosphere and hydrosphere Reviewed International journal
Takashi Sambuichi, Urumu Tsunogai, Kazushige Kura, Fumiko Nakagawa, Takeshi Ohba
GEOCHEMICAL JOURNAL Vol. 55 ( 6 ) page: e25 - e33 2021.11
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Determination of the triple oxygen isotopic composition of tropospheric ozone in terminal positions using a multistep nitrite‐coated filter‐pack system Reviewed International journal
Hao Xu, Urumu Tsunogai, Fumiko Nakagawa, Yijun Li, Masanori Ito, Keiichi Sato, Hiroshi Tanimoto
Rapid Communications in Mass Spectrometry Vol. 35 ( 15 ) page: e9124 2021.8
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Development of a drone-borne volcanic plume sampler Invited Reviewed International journal
Ryo Shingubara, Urumu Tsunogai, Masanori Ito, Fumiko Nakagawa, Shin Yoshikawa, Mitsuru Utsugi, Akihiko Yokoo
Journal of Volcanology and Geothermal Research Vol. 412 page: 107197 - 107197 2021.4
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Vertical Changes in the Flux of Atmospheric Nitrate From a Forest Canopy to the Surface Soil Based on Δ<sup>17</sup>O Values Reviewed International journal
Takahiro Inoue, Fumiko Nakagawa, Hideaki Shibata, Urumu Tsunogai
Journal of Geophysical Research: Biogeosciences Vol. 126 ( 4 ) 2021.4
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Behavior of magmatic components in fumarolic gases related to the 2018 phreatic eruption at Ebinokogen Ioyama volcano, Kirishima Volcanic Group, Kyushu, Japan Reviewed International journal
Takeshi Ohba, Muga Yaguchi, Urumu Tsunogai, Masanori Ito, Ryo Shingubara
Earth, Planets and Space Vol. 73 ( 1 ) 2021.3
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Geological features for the formation of gas-geochemical fields, including helium and hydrogen, in the water and sediments at the Vietnamese part of the South-China Sea Reviewed International coauthorship International journal
Syrbu N.S., Cuong D.H., Iakimov T.S., Kholmogorov A.O., Telegin Y.A., Tsunogai U.
Georesursy Vol. 23 ( 3 ) page: 132 - 142 2021
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Variation of volcanic gas composition at a poorly accessible volcano: Sakurajima, Japan Reviewed International journal
H. Shinohara, R. Kazahaya, T. Ohminato, T. Kaneko, U. Tsunogai, M. Morita
Journal of Volcanology and Geothermal Research Vol. 407 page: 107098 - 107098 2020.12
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Dual stable isotope characterization of excess methane in oxic waters of a mesotrophic lake Reviewed International journal
Tsunogai Urumu, Miyoshi Yuko, Matsushita Toshiyuki, Komatsu Daisuke D., Ito Masanori, Sukigara Chiho, Nakagawa Fumiko, Maruo Masahiro
LIMNOLOGY AND OCEANOGRAPHY Vol. 65 ( 12 ) page: 2937 - 2952 2020.7
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Gas-geochemical studies of gas fields and increased metal concentrations in the East Siberian Sea Reviewed International coauthorship International journal
Shakirov R. B., A. V. Sorochinskaja, N. S. Syrbu, Urumu Tsunogai, Tran Hoang Yen
VIETNAM JOURNAL OF EARTH SCIENCES Vol. 42 ( 4 ) page: 395 - 410 2020
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Development of a drone-borne volcanic plume sampler
Tsunogai Urumu, Shingubara Ryo, Ito Masanori, Nakagawa Fumiko, Yoshikawa Shin, Utsugi Mitsuru, Yokoo Akihiko
Abstracts of Annual Meeting of the Geochemical Society of Japan Vol. 67 page: 132 2020
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Influence of warm-core eddy on dissolved methane distributions in the southwestern Canada basin during late summer/early fall 2015 Reviewed International journal
Oanh Thi Ngoc Bui, Kameyama Sohiko, Kawaguchi Yusuke, Nishino Shigeto, Tsunogai Urumu, Yoshikawa-Inoue Hisayuki
POLAR SCIENCE Vol. 22 2019.12
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Stable hydrogen and oxygen isotopic compositions of water vapor in volcanic plumes sampled in glass bottles using cavity ring-down spectroscopy Reviewed International journal
Takahashi Koji U., Tsunogai Urumu, Nakagawa Fumiko, Sukigara Chiho
JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH Vol. 384 page: 232-240 2019.10
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Ohba Takeshi, Yaguchi Muga, Nishino Kana, Numanami Nozomi, Tsunogai Urumu, Ito Masanori, Shingubara Ryo
FRONTIERS IN EARTH SCIENCE Vol. 7 2019.9
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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 Reviewed International journal
Ohba Takeshi, Yaguchi Muga, Nishino Kana, Numanami Nozomi, Daita Yasushi, Sukigara Chiho, Ito Masanori, Tsunogai Urumu
EARTH PLANETS AND SPACE Vol. 71 ( 1 ) 2019.4
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Export flux of unprocessed atmospheric nitrate from temperate forested catchments: a possible new index for nitrogen saturation Reviewed International journal
Nakagawa Fumiko, Tsunogai Urumu, Obata Yusuke, Ando Kenta, Yamashita Naoyuki, Saito Tatsuyoshi, Uchiyama Shigeki, Morohashi Masayuki, Sase Hiroyuki
BIOGEOSCIENCES Vol. 15 ( 22 ) page: 7025 - 7042 2018.11
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Variation of geochemical environments associated with whale-fall biomass mineralization processes in the sediment during the mobile scavenger, enrichment opportunist, and sulfophilic stages
Onishi Yuji, Shimamura Sho, Yamanaka Toshiro, Nakayama Rei, Ozaki Ken-Ichi, Miyazaki Masayuki, Tsunogai Urumu, Fujiwara Yoshihiro
MARINE BIOLOGY Vol. 165 ( 9 ) 2018.9
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Estimates of methane emissions from the Southern Ocean from quasi-continuous underway measurements of the partial pressure of methane in surface seawater during the 2012/13 austral summer
Oanh Thi Ngoc Bui, Kameyama Sohiko, Yoshikawa-Inoue Hisayuki, Ishii Masao, Sasano Daisuke, Uchida Hiroshi, Tsunogai Urumu
TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY Vol. 70 2018.8
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Deep-biosphere methane production stimulated by geofluids in the Nankai accretionary complex
Ijiri Akira, Inagaki Fumio, Kubo Yusuke, Adhikari Rishi R., Hattori Shohei, Hoshino Tatsuhiko, Imachi Hiroyuki, Kawagucci Shinsuke, Morono Yuki, Ohtomo Yoko, Ono Shuhei, Sakai Sanae, Takai Ken, Toki Tomohiro, Wang David T., Yoshinaga Marcos Y., Arnold Gail L., Ashi Juichiro, Case David H., Feseker Tomas, Hinrichs Kai-Uwe, Ikegawa Yojiro, Ikehara Minoru, Kallmeyer Jens, Kumagai Hidenori, Lever Mark A., Morita Sumito, Nakamura Ko-ichi, Nakamura Yuki, Nishizawa Manabu, Orphan Victoria J., Roy Hans, Schmidt Frauke, Tani Atsushi, Tanikawa Wataru, Terada Takeshi, Tomaru Hitoshi, Tsuji Takeshi, Tsunogai Urumu, Yamaguchi Yasuhiko T., Yoshida Naohiro
SCIENCE ADVANCES Vol. 4 ( 6 ) 2018.6
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Clay Mineral Suites in Submarine Mud Volcanoes in the Kumano Forearc Basin, Nankai Trough: Constraints on the Origin of Mud Volcano Sediments
Ijiri Akira, Iijima Koichi, Tsunogai Urumu, Ashi Juichiro, Inagaki Fumio
GEOSCIENCES Vol. 8 ( 6 ) 2018.6
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Triple oxygen isotopes indicate urbanization affects sources of nitrate in wet and dry atmospheric deposition
Nelson David M., Tsunogai Urumu, Ding Dong, Ohyama Takuya, Komatsu Daisuke D., Nakagawa Fumiko, Noguchi Izumi, Yamaguchi Takashi
ATMOSPHERIC CHEMISTRY AND PHYSICS Vol. 18 ( 9 ) page: 6381-6392 2018.5
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Quantifying nitrate dynamics in a mesotrophic lake using triple oxygen isotopes as tracers
Tsunogai Urumu, Miyauchi Takanori, Ohyama Takuya, Komatsu Daisuke D., Ito Masanori, Nakagawa Fumiko
LIMNOLOGY AND OCEANOGRAPHY Vol. 63 page: S458-S476 2018.3
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Ecological and genomic profiling of anaerobic methane-oxidizing archaea in a deep granitic environment
Ino Kohei, Hernsdorf Alex W., Konno Uta, Kouduka Mariko, Yanagawa Katsunori, Kato Shingo, Sunamura Michinari, Hirota Akinari, Togo Yoko S., Ito Kazumasa, Fukuda Akari, Iwatsuki Teruki, Mizuno Takashi, Komatsu Daisuke D., Tsunogai Urumu, Ishimura Toyoho, Amano Yuki, Thomas Brian C., Banfield Jillian F., Suzuki Yohey
ISME JOURNAL Vol. 12 ( 1 ) page: 31-47 2018.1
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Flux and distribution of methane (CH4) in the Gunsan Basin of the southeastern Yellow Sea, off the Western Korea
Lee Jun-Ho, Woo Han Jun, Son Seung-Kyu, Kim Moonkoo, Lee Dong-Hun, Tsunogai Urumu, Jeong Kap-Sik
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING Vol. 53 ( 5 ) page: 457-466 2018
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Recent advances in earth and environmental sciences using natural stable isotopes as tracers
Tsunogai Urumu
Chikyukagaku Vol. 52 ( 3 ) page: 107-129 2018
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湖沼における硝化速度定量化の新手法について
角皆 潤, 中川 書子
月刊下水道 Vol. 41 page: 66 - 71 2018
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噴煙の化学組成を利用した火山診断
角皆 潤
理フィロソフィア Vol. 34 page: 8 - 11 2018
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Ecological and genomic profiling of anaerobic methane-oxidizing archaea in a deep granitic environment Reviewed
Suzuki, Y., K. Ino, A. Hernsdorf, U. Konno, M. Kouduka, K. Yanagawa, M. Sunamura, A. Hirota, Y. Togo, K. Ito, A. Fukuda, T. Iwatsuki, T. Mizuno, D. Komatsu, U. Tsunogai, T. Ishimura, Y. Amano, B. Thomas, J. Banfield, and S. Kato
The ISME Journal 2017.9
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高感度安定同位体質量分析に基づく海洋地球化学の革新(第31回海洋化学学術賞石橋賞受賞記念論文) Invited
角皆 潤
海洋化学研究 Vol. 30 ( 1 ) page: 3-17 2017.4
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Formation of gas discharging from Taketomi submarine hot spring off Ishigaki Island in the southern Ryukyu Islands, Japan
Toki Tomohiro, Iwata Daigo, Tsunogai Urumu, Komatsu Daisuke D., Sano Yuji, Takahata Naoto, Hamasaki Hiroshi, Ishibashi Jun-ichiro
JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH Vol. 330 page: 24-35 2017.1
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The role of low-temperature organic matter diagenesis in carbonate precipitation within a marine deposit
Miyakawa Kazuya, Ishii Eiichi, Hirota Akinari, Komatsu Daisuke D., Ikeya Kosuke, Tsunogai Urumu
APPLIED GEOCHEMISTRY Vol. 76 page: 218-231 2017.1
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高感度安定同位体質量分析に基づく海洋地球化学の革新(第31回海洋化学学術賞石橋賞受賞記念論文)
角皆 潤
海洋化学研究 Vol. 30 page: 3 - 17 2017
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Microbial metabolism inferred from chemical and isotopic compositions of pore water around bananas discovered on the deep-sea floor in the Tenryu Submarine Canyon Reviewed
Tomohiro Toki, Kiichiro Kawamura, Urumu Tsunogai, Toshitaka Gamo
JAMSTEC-R Vol. 25 page: 1 - 12 2017
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Methanogens in H2-rich hydrothermal fluids resulting from phase separation in a sediment-starved, basalt-hosted hydrothermal system Reviewed
Toki, T., A. Hamamoto, M. Tawata, J. Miyazaki, K. Nakamura, M. Abe, K. Takai, Y. Sano, N. Takahata, U. Tsunogai, J. Ishibashi
Chemical Geology Vol. 447 page: 208-218 2016.12
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Geochemical characteristics of hydrothermal fluids at Hatoma Knoll in the southern Okinawa Trough Reviewed
Toki, T., M. Itoh, D. Iwata, S. Ohshima, R. Shinjo, J. Ishibashi, U. Tsunogai, N. Takahata, Y. Sano, T. Yamanaka, A. Ijiri, N. Okabe, T. Gamo, Y. Muramatsu, Y. Ueno, S. Kawagucci, and K. Takai
Geochemical Journal Vol. 50 ( 6 ) page: 493-525 2016.12
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Mass occurrence of the enigmatic gastropod Elmira in the Late Cretaceous Sada Limestone seep deposit in southwestern Shikoku, Japan Reviewed
Nobuhara, T., D. Onda, T. Sato, H. Aosawa, T. Ishimura, A. Ijiri, U. Tsunogai, N. Kikuchi, Y. Kondo, and S. Kiel
Paläontologische Zeitschrift Vol. 90 ( 4 ) page: 701–722 2016.12
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Remote determinations on fumarole outlet temperatures in an eruptive volcano Reviewed
Tsunogai, U., L. Cheng, M. Ito, D. D. Komatsu, F. Nakagawa, and H. Shinoara
Geophysical Research Letters Vol. 43 ( 22 ) page: 11620-11627 2016.11
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Geochemical imprints of genotypic variants of Globigerina bulloides in the Arabian Sea Reviewed
Sadekov, A., K. Darling, T. Ishimura, C. Wade, K. Kimoto, A. Singh, P. Anand, D. Kroon, S. Jung, G. Ganssen, R. Ganneshram, U. Tsunogai, and H. Elderfield
Paleoceanography Vol. 31 ( 10 ) page: 1440-1452 2016.10
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Spatial and temporal variations of gas geochemistry at Mt. Ontake, Japan Reviewed
Kagoshima, T., Y. Sano, N. Takahata, A. Ishida, Y. Tomonaga, E. Roulleau, D. L. Pinti, T. P. Fischer, T. Lan, Y. Nishio and U. Tsunogai
Journal of Volcanology and Geothermal Research Vol. 325 page: 179-188 2016.10
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Helium and methane sources and fluxes of shallow submarine hydrothermal plumes near the Tokara Islands, Southern Japan Reviewed
Wen, H.-Y., Y. Sano, N. Takahata, Y. Tomonaga, A. Ishida, K. Tanaka, T. Kagoshima, K. Shirai, J. Ishibashi, H. Yokose, U. Tsunogai, and T.F. Yang
Scientific Reports Vol. 6 page: doi:10.1038/srep34126 2016.9
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A 150-year variation of the Kuroshio transport inferred from coral nitrogen isotope signature Reviewed
Yamazaki, A., T. Watanabe, U. Tsunogai, F. Iwase, H. Yamano
Paleoceanography Vol. 31 ( 6 ) page: 838-846 2016.6
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Tsunogai, U., T. Miyauchi, T. Ohyama, D.D. Komatsu, F. Nakagawa, Y. Obata, K. Sato, and T. Ohizumi
Biogeosciences Vol. 13 page: 3441-3459 2016.6
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Deep Microbial Life in High-Quality Granitic Groundwater from Geochemically and Geographically Distinct Underground Boreholes Reviewed
Ino, K., U. Konno, M. Kouduka, A. Hirota, Y. Togo, A. Fukuda, D. Komatsu, U. Tsunogai, A.S. Tanabe, S. Yamamoto, T. Iwatsuki, T. Mizuno, K. Ito, Y. Suzuki
Environmental Microbiology Reports Vol. 8 ( 2 ) page: 285-294 2016.4
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Tracing the origin and fate of atmospheric nitrate by using stable isotopes Invited Reviewed
Tsunogai, Urumu, and Fumiko Nakagawa
Earozoru Kenkyu Vol. 31 ( 1 ) page: 5-14 2016.3
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The GEOTRACES Intermediate Data Product 2014 Reviewed
The GEOTRACES Group
Marine Chemistry Vol. 177 ( 1 ) page: 1-8 2015.12
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Chemical composition of Hydrothermal fluids in the central and southern Mariana trough backarc basin Reviewed
Ishibashi, J. U. Tsunogai, T. Toki, N. Ebina, T. Gamo, Y. Sano, H. Masuda, H. Chiba
Deep-Sea Research Part II Vol. 121 page: 126-136 2015.11
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Hydrothermal plumes in the Gulf of Aden, as characterized from light transmission, Mn, Fe, CH4 and δ13C-CH4 anomalies Reviewed
Gamo, T., K. Okamura, H. Hatanaka, H. Hasumoto, D. Komatsu, M. Chinen, M. Mori, J. Tanaka, A. Hirota, U. Tsunogai, K. Tamaki
Deep-Sea Research Part II Vol. 121 page: 62-70 2015.11
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The coral δ15N record of terrestrial nitrate loading varies with river catchment land use Reviewed
Yamazaki, A., T. Watanabe, U. Tsunogai, H. Hasegawa, H. Yamano
Coral Reefs Vol. 34 ( 1 ) page: 353-362 2015.3
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Biogeochemical Signals from Deep Microbial Life in Terrestrial Crust Reviewed
Suzuki, Y., U. Konno, A. Fukuda, D.D. Komatsu, A. Hirota, Y. Togo, N. Morikawa, H. Hagiwara, D. Aosai, T. Iwatsuki, U. Tsunogai, S. Nagao, K. Ito, T. Mizuno
PLoS ONE Vol. 9 ( 12 ) page: e113063 2014.12
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Chemical and Isotopic Compositions of Hydrothermal Fluids at Snail, Archaean, Pika, and Urashima Sites in the Southern Mariana Trough Invited Reviewed
Toki, Tomohiro, Jun-ichiro Ishibashi, Takuroh Noguchi, Miki Tawata, Urumu Tsunogai, Toshiro Yamanaka, Kentaro Nakamura
Subseafloor Biosphere Linked to Hydrothermal Systems page: 587-602 2014.11
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Tarama Knoll: Geochemical and Biological Profiles of Hydrothermal Activity Reviewed
Yamanaka, T., H. Nagashio, R. Nishio, K. Kondo, T. Noguchi, K. Okamura, T. Nunoura, H. Makita, K. Nakamura, H. Watanabe, K. Inoue, T. Toki, K. Iguchi, U. Tsunogai, R. Nakada, S. Ohshima, S. Toyoda, J. Kawai, N. Yoshida, A. Ijiri, and M. Sunamura
Subseafloor Biosphere Linked to Hydrothermal Systems page: 497-504 2014.11
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Origin and transport of pore fluids in the Nankai accretionary prism inferred from chemical and isotopic compositions of pore water at cold seep sites off Kumano Reviewed
Toki, T., R. Higa, A. Ijiri, U. Tsunogai and J. Ashi
Earth Planets and Space Vol. 66 page: doi:10.1186/s40623-014-0137-3 2014.10
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Quantifying the effects of clear-cutting and strip-cutting on nitrate dynamics in a forested watershed using triple oxygen isotopes as tracers Reviewed
Tsunogai, U., Komatsu, D. D., Ohyama, T., Suzuki, A., Nakagawa, F., Noguchi, I., Takagi, K., Nomura, M., Fukuzawa, K., Shibata, H.
Biogeosciences Vol. 11 ( 19 ) page: 5411–5424 2014.10
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Isotopes in Environmental Sciences: 3, Appling stable isotopes for studying behavior of trace components Invited Reviewed
Tsunogai, U., F. Nakagawa
Journal of Japan Society for Atmospheric Environment Vol. 49 ( 5 ) page: A63-A72 2014.9
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Electrochemical Stimulation of Microbial Reductive Dechlorination of Pentachlorophenol Using Solid-State Redox Mediator (Humin) Immobilization Reviewed
Vol. 164 page: 232–240 2014.7
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Tracing geologically constrained fluid flow pathways using a combination of heat flow measurements, pore water chemistry, and acoustic imaging near the deformation front of the Nankai Trough off the Muroto Peninsula, Japan Reviewed
Vol. 618 page: 121-137 2014.3
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High-Resolution Measurement of Volatile Organic Compounds Dissolved in Seawater Using Equilibrator Inlet-Proton Transfer Reaction-Mass Spectrometry (EI-PTR-MS) Reviewed
page: 89-115 2014.3
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Leakage of magmatic-hydrothermal volatiles from a crater bottom formed by a submarine eruption in 1989 at Teishi Knoll, Japan Reviewed
Notsu, K., R. Sohrin, H. Wada, T. Tsuboi, H. Sumino, T. Mori, U. Tsunogai, P.A. Hernandez, Y. Suzuki, R. Ikuta, K. Oorui, M. Koyama, T. Masuda, N. Fujii
Journal of Volcanology and Geothermal Research Vol. 270 page: 90-98 2014.1
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Origin of pore water in Kumano mud volcanoes Reviewed
Toki, T., R. Higa, A. Tanahara, A. Ijiri, U. Tsunogai, J. Ashi
Chikyukagaku (Geochemistry) Vol. 47 ( 4 ) page: 221-236 2013.12
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Occurrence and potential activity of denitrifiers and methanogens in groundwater at 140 m depth in Pliocene diatomaceous mudstone of northern Japan Reviewed
Katsuyama, C., Nashimoto, H., Nagaosa, K., Ishibashi, T., Kinoshita, T., Yoshikawa, H., Aoki, K., Asano, T., Sasaki, Y., Sohrin, R., Komatsu, D., Tsunogai, U., Kimura, H., Suwa, Y., Kato, K.
FEMS Microbiology Ecology Vol. 86 ( 3 ) page: 532–543 2013.12
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Remote temperature sensing on volcanic fumaroles using HIReTS: Applications to Satsuma-Iwojima volcano, Japan Reviewed
Tsunogai, U., D.D. Komatsu, F. Nakagawa
Bulltein of the Volcanological Society of Japan Vol. 58 ( 3 ) page: 443-459 2013.9
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Strong relationship between dimethyl sulfide and net community production in the western subarctic Pacific Reviewed
Kameyama, S., H. Tanimoto, S. Inomata, H. Y. Inoue, U. Tsunogai, A. Tsuda, M. Uematsu, M. Ishii, D. Sasano
Geophysical Research Letters Vol. 40 ( 15 ) page: 3986-3990 2013.8
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Nitrogen isotopes in intra-crystal coralline aragonites Reviewed
Yamazaki, A., T. Watanabe, N. Takahata, Y. Sano, U. Tsunogai
Chemical Geology Vol. 351 page: 276–280 2013.8
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Tracing atmospheric nitrate in groundwater using triple oxygen isotopes: Evaluation based on bottled drinking water Reviewed
Nakagawa, F., A. Suzuki, S. Daita, T. Ohyama, D.D. Komatsu, U. Tsunogai
Biogeosciences Vol. 10 page: 3547-3558 2013.6
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Shallow submarine hydrothermal activity with abundant magmatic water producing talc chimneys in the Wakamiko Crater of Kagoshima Bay, southern Kyushu, Japan Reviewed
Journal of Volcanology and Geothermal Research Vol. 258 page: 74–84 2013.5
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Validity of otolith delta18O of Pacific bluefin tuna (Thunnus orientalis) as an indicator of ambient water temperature Reviewed
Kitagawa, T., T. Ishimura, R. Uozato, K. Shirai, Y. Amano, A. Shinoda, T. Otake, U. Tsunogai, S. Kimura
Marine Ecology Progress Series 2013.5
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Novel microbial populations colonized in deep granitic groundwater from Grimsel Test Site, Switzerland Reviewed
Konno, U., M. Kouduka, D.D. Komatsu, K. Ishii, A. Fukuda, U. Tsunogai, K. Ito, Y. Suzuki
Microbial Ecology Vol. 65 ( 3 ) page: 626-637 2013.4
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Megacities and large urban agglomerations in the Coastal Zone: Interactions between atmosphere, land and marine ecosystems Reviewed
von Glasow, R., T. Jickells, A. Baklanov, G.R. Carmichael, T. Church, L. Gallardo, C. Hughes, M. Kanakidou, P. Liss, L. Mee, R. Raine, P. Ramachandran, R. Ramesh, K. Sundseth, U. Tsunogai, M. Uematsu, T. Zhu
AMBIO Vol. 42 ( 1 ) page: 13-28 2013.2
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Contribution of methane to total gas pressure in deep waters at lakes Nyos and Monoun (Cameroon, West Africa) Reviewed
Issa, T. Ohba, F. Wilson, Y. Yoshida, F. Alain, M. Kusakabe, U. Tsunogai, Y. Oginuma, C. T. Boris, G. Tanyileke, S. Nkamdjou, H. Satake J.V. Hell
Geochemical Journal Vol. 47 ( 3 ) page: 349-362 2013
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Coseimic massive methane release from a submarine mud volcano Reviewed
Tsunogai, U., K. Maegawa, S. Sato, D.D. Komatsu, F. Nakagawa, T. Toki, and J. Ashi
Earth and Planetary Science Letters Vol. 341-344 page: 79-85 2012.8
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Biogeochemical processes involving acetate in sub-seafloor sediments from the Bering Sea shelf break Reviewed
Ijiri, A., N. Harada, A. Hirota, U. Tsunogai, N.O. Ogawa, T. Itaki, B.-K. Khim, M. Uchida
Organic Geochemistry Vol. 48 page: 47-55 2012.7
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Iron-based microbial ecosystem on and below the seafloor: a case study of hydrothermal fields of the Southern Mariana Trough Reviewed
Kato, S., K. Nakamura, T. Toki, J. Ishibashi, U. Tsunogai, A. Hirota, M. Ohkuma, A. Yamagishi
Frontiers in Microbiology Vol. 3 2012.3
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Disturbance of deep-sea environments induced by the M9.0 Tohoku Earthquake Reviewed
Kawagucci, S., Y.T. Yoshida, T. Noguchi, M.C. Honda, H. Uchida, H. Ishibashi, F. Nakagawa, U. Tsunogai, K. Okamura, Y. Takaki, T. Nunoura, J. Miyazaki, W. Lin, H. Kitazato, and K. Takai
Scientific Reports Vol. 2 2012.2
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First measurements of methane and its carbon isotope ratio in the Japan Sea (East Sea) Reviewed
Gamo, T., U. Tsunogai, A. Hirota, N. Nakayama, D.-J. Kang, K.-R. Kim
MARINE CHEMISTRY Vol. 128 page: 92-99 2012.1
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The origin of methane in crustal fluids around the Ryukyu Islands Reviewed
Tomohiro Toki, Ryutaro Honda, Kazuki Oomine, Daigo Iwata, Urumu Tsunogai, Daisuke D. Komatsu, Yuji Sano, Naoto Takahata, Jun-ichiro Ishibashi, Masataka Kinoshita, Hideyuki Yamashiro
Chikyukagaku (Geochemistry) Vol. 46 ( 4 ) page: 257-274 2012
-
Methane production and accumulation in the Nankai accretionary prism: Results from IODP Expeditions 315 and 316 Reviewed
Geochemical Journal Vol. 46 ( 2 ) page: 89-106 2012
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Ishimura, T., Tsunogai, U., Hasegawa, S., Nakagawa, F., Oi, T., Kitazato, H., Suga, H., Toyofuku, T.
Biogeosciences Vol. 9 page: 4353-4367 2012
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Stable hydrogen isotopic analysis of nanomolar molecular hydrogen by automatic multi-step gas chromatographic separation Reviewed
Komatsu, Daisuke D., Tsunogai, Urumu, Kamimura, Kanae, Konno, Uta, Ishimura, Toyoho, Nakagawa, Fumiko
RAPID COMMUNICATIONS IN MASS SPECTROMETRY Vol. 25 ( 21 ) page: 3351-3359 2011.11
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Nitrogen isotopes of organic nitrogen in reef coral skeletons as a proxy of tropical nutrient dynamics Reviewed
Yamazaki, Atsuko, Watanabe, Tsuyoshi, Tsunogai, Urumu
GEOPHYSICAL RESEARCH LETTERS Vol. 38 2011.10
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Hydrogen isotopes in volcanic plumes: Tracers for remote temperature sensing of fumaroles Reviewed
Tsunogai, U., K. Kamimura, S. Anzai, F. Nakagawa, D.D. Komatsu
GEOCHIMICA ET COSMOCHIMICA ACTA Vol. 75 ( 16 ) page: 4531-4546 2011.8
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A geochemical study on mud volcanoes in the Junggar Basin, China Reviewed
Nakada, Ryoichi, Takahashi, Yoshio, Tsunogai, Urumu, Zheng, Guodong, Shimizu, Hiroshi, Hattori, Keiko H.
APPLIED GEOCHEMISTRY Vol. 26 ( 7 ) page: 1065-1076 2011.7
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Geophysical and geochemical evidence of large scale fluid flow within shallow sediments in the eastern Gulf of Mexico, offshore Louisiana Reviewed
Gay, A., Takano, Y., Gilhooly, III, W. P., Berndt, C., Heeschen, K., Suzuki, N., Saegusa, S., Nakagawa, F., Tsunogai, U., Jiang, S. Y., Lopez, M.
GEOFLUIDS Vol. 11 ( 1 ) page: 34-47 2011.2
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Stable carbon isotope ratios of ethane over the North Pacific: Atmospheric measurements and global chemical transport modeling Reviewed
Saito, Takuya, Stein, Olaf, Tsunogai, Urumu, Kawamura, Kimitaka , Nakatsuka, Takeshi, Gamo, Toshitaka, Yoshida, Naohiro
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES Vol. 116 2011.1
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Application of PTR-MS to an incubation experiment of the marine diatom Thalassiosira pseudonana Reviewed
Kameyama, Sohiko, Tanimoto, Hiroshi, Inomata, Satoshi, Suzuki, Koji, Komatsu, Daisuke D., Hirota, Akinari, Konno, Uta, Tsunogai, Urumu
GEOCHEMICAL JOURNAL Vol. 45 ( 5 ) page: 355-363 2011
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Quantifying nitrate dynamics in an oligotrophic lake using Δ17O Reviewed
Tsunogai, U., Daita, S., Komatsu, D. D., Nakagawa, F., Tanaka, A.
BIOGEOSCIENCES Vol. 8 ( 3 ) page: 687-702 2011
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Diversity and Function of Epibiotic Microbial Communities on the Galatheid Crab, Shinkaia crosnieri Reviewed
Watsuji, Tomo-o, Nakagawa, Satoshi, Tsuchida, Shinji, Toki, Tomohiro, Hirota, Akinari, Tsunogai, Urumu, Takai, Ken
MICROBES AND ENVIRONMENTS Vol. 25 ( 4 ) page: 288-294 2010.12
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High-resolution measurement of multiple volatile organic compounds dissolved in seawater using equilibrator inlet-proton transfer reaction-mass spectrometry (EI-PTR-MS) Reviewed
Kameyama, Sohiko, Tanimoto, Hiroshi, Inomata, Satoshi, Tsunogai, Urumu, Ooki, Atsushi, Takeda, Shigenobu, Obata, Hajime, Tsuda, Atsushi, Uematsu, Mitsuo
MARINE CHEMISTRY Vol. 122 ( 40912 ) page: 59-73 2010.10
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Geomicrobiological Properties of Ultra-Deep Granitic Groundwater from the Mizunami Underground Research Laboratory (MIU), Central Japan Reviewed
Fukuda, Akari, Hagiwara, Hiroki, Ishimura, Toyoho, Kouduka, Mariko, Ioka, Seiichiro, Amano, Yuki, Tsunogai, Urumu, Suzuki, Yohey, Mizuno, Takashi
MICROBIAL ECOLOGY Vol. 60 ( 1 ) page: 214-225 2010.7
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Simultaneous determination of delta15N and delta18O of N2O and delta13C of CH4 in nanomolar quantities from a single water sample Reviewed
Hirota, A., Tsunogai, U., Komatsu, D. D., Nakagawa, F.
RAPID COMMUNICATIONS IN MASS SPECTROMETRY Vol. 24 ( 7 ) page: 1085-1092 2010.4
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Archaeal Diversity and Distribution along Thermal and Geochemical Gradients in Hydrothermal Sediments at the Yonaguni Knoll IV Hydrothermal Field in the Southern Okinawa Trough Reviewed
Nunoura, Takuro, Oida, Hanako, Nakaseama, Miwako, Kosaka, Ayako , Ohkubo, Satoru B., Kikuchi, Toru, Kazama, Hiromi, Hosoi-Tanabe, Shoko, Nakamura, Ko-ichi, Kinoshita, Masataka, Hirayama, Hisako, Inagaki, Fumio, Tsunogai, Urumu, Ishibashi, Jun-ichiro, Takai, Ken
APPLIED AND ENVIRONMENTAL MICROBIOLOGY Vol. 76 ( 4 ) page: 1198-1211 2010.2
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北日本における亜硝酸ガス濃度と窒素酸化物由来成分の挙動 Reviewed
野口泉, 林健太郎, 加藤拓紀, 山口高志, 秋山雅行, 大塚英幸, 酒井茂克, 高木健太郎, 深澤達矢, 柴田英昭, 藤沼康実, 三枝信子, 下鳥稔, 家合浩明, 松田和秀, 角皆潤, 原宏
大気環境学会誌 Vol. 45 page: 153-165 2010
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Origin and fate of deep-sea seeping methane bubbles at Kuroshima Knoll, Ryukyu forearc region, Japan Invited Reviewed
Tsunogai, U., Kosaka, A., Nakayama, N., Komatsu, D. D., Konno, U., Kameyama, S., Nakagawa, F., Sumino, H., Nagao, K. , Fujikura, K., Machiyama, H.
GEOCHEMICAL JOURNAL Vol. 44 ( 6 ) page: 461-476 2010
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Microbial carbon isotope fractionation to produce extraordinarily heavy methane in aging hydrothermal plumes over the southwestern Okinawa Trough Reviewed
Gamo, Toshitaka, Tsunogai, Urumu, Ichibayashi, Shinsuke, Chiba, Hitoshi, Obata, Hajime, Oomori, Tamotsu, Noguchi, Takuro, Baker, Edward T., Doi, Takashi, Maruo, Masahiro, Sano, Yuji
GEOCHEMICAL JOURNAL Vol. 44 ( 6 ) page: 477-487 2010
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Gas geochemical characteristics of hydrothermal plumes at the HAKUREI and JADE vent sites, the Izena Cauldron, Okinawa Trough Reviewed
Kawagucci, Shinsuke, Shirai, Kotaro, Lan, Tefang Faith, Takahata, Naoto, Tsunogai, Urumu, Sano, Yuji, Gamo, Toshitaka
GEOCHEMICAL JOURNAL Vol. 44 ( 6 ) page: 507-518 2010
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Sources of pore water in a Tanegashima mud volcano inferred from chemical and stable isotopic studies Reviewed
Nakayama, Noriko, Ashi, Juichiro, Tsunogai, Urumu, Gamo, Toshitaka, Tanahashi, Michiro
GEOCHEMICAL JOURNAL Vol. 44 ( 6 ) page: 561-569 2010
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Tracing the fate of atmospheric nitrate deposited onto a forest ecosystem in Eastern Asia using Δ17O Reviewed
Tsunogai, U., Komatsu, D. D., Daita, S., Kazemi, G. A., Nakagawa, F., Noguchi, I., Zhang, J.
ATMOSPHERIC CHEMISTRY AND PHYSICS Vol. 10 ( 4 ) page: 1809-1820 2010
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三酸素同位体組成を指標に用いた大気沈着窒素ー森林生態系間相互作用の定量的評価法 Reviewed
角皆 潤, 小松 大祐, 代田 里子, 中川 書子, 野口 泉, 張 勁
低温科学 Vol. 68 page: 107-120 2010
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Determination of total N2 fixation rates in the ocean taking into account both the particulate and filtrate fractions Reviewed
Konno, U., Tsunogai, U., Komatsu, D. D., Daita, S., Nakagawa, F., Tsuda, A., Matsui, T., Eum, Y. -J., Suzuki, K.
BIOGEOSCIENCES Vol. 7 ( 8 ) page: 2369-2377 2010
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Unique distribution of deep groundwater bacteria constrained by geological setting Reviewed
Kato, Kenji, Nagaosa, Kazuyo, Kimura, Hiroyuki, Katsuyama, Chie , Hama, Katsuhiro, Kunimaru, Takanori, Tsunogai, Urumu, Aoki, Kazuhiro
ENVIRONMENTAL MICROBIOLOGY REPORTS Vol. 1 ( 6 ) page: 569-574 2009.12
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Enrichment of nitrous oxide in the water columns in the area of the Bering and Chukchi Seas Reviewed
Hirota, A., Ijiri, A., Komatsu, D. D., Ohkubo, S. B., Nakagawa, F., Tsunogai, U.
MARINE CHEMISTRY Vol. 116 ( 40912 ) page: 47-53 2009.11
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Molecular Characterization of Potential Nitrogen Fixation by Anaerobic Methane-Oxidizing Archaea in the Methane Seep Sediments at the Number 8 Kumano Knoll in the Kumano Basin, Offshore of Japan Reviewed
Miyazaki, Junichi, Higa, Ryosaku, Toki, Tomohiro, Ashi, Juichiro, Tsunogai, Urumu, Nunoura, Takuro, Imachi, Hiroyuki , Takai, Ken
APPLIED AND ENVIRONMENTAL MICROBIOLOGY Vol. 75 ( 22 ) page: 7153-7162 2009.11
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Equilibrator Inlet-Proton Transfer Reaction-Mass Spectrometry (EI-PTR-MS) for Sensitive, High-Resolution Measurement of Dimethyl Sulfide Dissolved in Seawater Reviewed
Kameyama, Sohiko, Tanimoto, Hiroshi, Inomata, Satoshi, Tsunogai, Urumu, Ooki, Atsushi, Yokouchi, Yoko, Takeda, Shigenobu, Obata, Hajime, Uematsu, Mitsuo
ANALYTICAL CHEMISTRY Vol. 81 ( 21 ) page: 9021-9026 2009.11
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Enrichment of adsorbed methane in authigenic carbonate concretions of the Japan Trench Reviewed
Ijiri, Akira, Tsunogai, Urumu, Gamo, Toshitaka, Nakagawa, Fumiko, Sakamoto, Tatsuhiko, Saito, Saneatsu
GEO-MARINE LETTERS Vol. 29 ( 5 ) page: 301-308 2009.10
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Theoretical and experimental evaluation of the isotope effect of NDIR analyzer on atmospheric CO2 measurement Reviewed
Tohjima, Yasunori, Katsumata, Keiichi, Morino, Isamu, Mukai, Hitoshi, Machida, Toshinobu, Akama, Isao, Amari, Taketo, Tsunogai, Urumu
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES Vol. 114 2009.7
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Enrichment of alkanes within a phytoplankton bloom during an in situ iron enrichment experiment in the western subarctic Pacific Reviewed
Kameyama, Sohiko, Tsunogai, Urumu, Nakagawa, Fumiko, Sasakawa, Motoki, Komatsu, Daisuke D., Ijiri, Akira, Yamaguchi, Junko, Horiguchi, Takeo, Kawamura, Hiroshi, Yamaguchi, Aika, Tsuda, Atsushi
MARINE CHEMISTRY Vol. 115 ( 40910 ) page: 92-101 2009.6
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Photochemical histories of nonmethane hydrocarbons inferred from their stable carbon isotope ratio measurements over east Asia Reviewed
Saito, Takuya, Kawamura, Kimitaka, Tsunogai, Urumu, Chen, Tai-Yih, Matsueda, Hidekazu, Nakatsuka, Takeshi, Gamo, Toshitaka, Uematsu, Mitsuo, Huebert, Barry J.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES Vol. 114 2009.6
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The living triserial planktic foraminifer Gallitellia vivans (Cushman): Distribution, stable isotopes, and paleoecological implications Reviewed
Kimoto, Katsunori, Ishimura, Toyoho, Tsunogai, Urumu, Itaki, Takuya, Ujiie, Yurika
MARINE MICROPALEONTOLOGY Vol. 71 ( 40910 ) page: 71-79 2009.4
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Biogeochemical profiles in deep sedimentary rocks in an inland fore-arc basin, Central Japan Reviewed
Suzuki, Yohey, Suko, Takeshi, Yoshioka, Hideyoshi, Takahashi, Masaaki, Nanba, Kenji, Tsunogai, Urumu, Takeno, Naoto, Ito, Kazumasa
CHEMICAL GEOLOGY Vol. 259 ( 40972 ) page: 107-119 2009.2
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Geological background of the Kairei and Edmond hydrothermal fields along the Central Indian Ridge: Implications of their vent fluids' distinct chemistry Reviewed
Kumagai, H., Nakamura, K., Toki, T., Morishita, T., Okino, K., Ishibashi, J. -I., Tsunogai, U., Kawagucci, S., Gamo, T. , Shibuya, T., Sawaguchi, T., Neo, N., Joshima, M., Sato, T., Takai, K.
GEOFLUIDS Vol. 8 ( 4 ) page: 239-251 2008.11
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Methane, manganese, and helium-3 in newly discovered hydrothermal plumes over the Central Indian Ridge, 18°-20° S Reviewed
Kawagucci, Shinsuke, Okamura, Kei, Kiyota, Kaoru, Tsunogai, Urumu, Sano, Yuji, Tamaki, Kensaku, Gamo, Toshitaka
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS Vol. 9 2008.10
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A multi-isotope study of deep-sea mussels at three different hydrothermal vent sites in the northwestern Pacific Reviewed
Naraoka, Hiroshi, Naito, Taku, Yamanaka, Toshiro, Tsunogai, Urumu, Fujikura, Katsunori
CHEMICAL GEOLOGY Vol. 255 ( 40910 ) page: 25-32 2008.9
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Methane enrichment in low-temperature hydrothermal fluids from the Suiyo Seamount in the Izu-Bonin Arc of the western Pacific Ocean Reviewed
Toki, Tomohiro, Tsunogai, Urumu, Ishibashi, Jun-ichiro, Utsumi, Motoo, Gamo, Toshitaka
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH Vol. 113 ( B8 ) 2008.8
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Cell proliferation at 122 degrees C and isotopically heavy CH4 production by a hyperthermophilic methanogen under high-pressure cultivation Reviewed
Takai, Ken, Nakamura, Kentaro, Toki, Tomohiro, Tsunogai, Urumu , Miyazaki, Masayuki, Miyazaki, Junichi, Hirayama, Hisako, Nakagawa, Satoshi, Nunoura, Takuro, Horikoshi, Koki
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA Vol. 105 ( 31 ) page: 10949-10954 2008.8
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Grain-scale heterogeneities in the stable carbon and oxygen isotopic compositions of the international standard calcite materials (NBS 19, NBS 18, IAEA-CO-1, and IAEA-CO-8) Reviewed
Ishimura, Toyoho, Tsunogai, Urumu, Nakagawa, Fumiko
RAPID COMMUNICATIONS IN MASS SPECTROMETRY Vol. 22 ( 12 ) page: 1925-1932 2008.6
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Determination of the 15N/14N, 17O/16O, and 18O/16O ratios of nitrous oxide by using continuous-flow isotope-ratio mass spectrometry Reviewed
omatsu, D.D., T. Ishimura, F. Nakagawa, U. Tsunogai
RAPID COMMUNICATIONS IN MASS SPECTROMETRY Vol. 22 ( 10 ) page: 1587-1596 2008.5
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Radiocarbon-based carbon source quantification of anomalous isotopic foraminifera in last glacial sediments in the western North Pacific Reviewed
Uchida, Masao, Ohkushi, Ken'ichi, Kimoto, Katsunori, Inagaki, Fumio, Ishimura, Toyoho, Tsunogai, Urumu, TuZino, Taqumi, Shibata, Yasuyuki
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS Vol. 9 2008.4
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Carbon isotopic characterization for the origin of excess methane in subsurface seawater Reviewed
Sasakawa, Motoki, Tsunogai, Urumu, Kameyama, Sohiko, Nakagawa, Fumiko, Nojiri, Yukihiro, Tsuda, Atsushi
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS Vol. 113 ( C3 ) 2008.3
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Sensitive determinations of stable nitrogen isotopic composition of organic nitrogen through chemical conversion into N2O Reviewed
Tsunogai, U., T. Kido, A. Hirota, S.B. Ohkubo, D.D. Komatsu, F. Nakagawa
Rapid Communications in Mass Spectrometry Vol. 22 ( 3 ) page: 345-354 2008.1
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Diverse range of mineralization induced by phase separation of hydrothermal fluid: Case study of the Yonaguni Knoll IV hydrothermal field in the Okinawa Trough back-arc basin Reviewed
Suzuki, Ryohei, Ishibashi, Jun-Ichiro, Nakaseama, Miwako, Konno, Uta, Tsunogai, Urumu, Gena, Kaul, Chiba, Hitoshi
RESOURCE GEOLOGY Vol. 58 ( 3 ) page: 267-288 2008
-
Long-term observation of mass-independent oxygen isotope anomaly in stratospheric CO2 Reviewed
Kawagucci, S., Tsunogai, U., Kudo, S., Nakagawa, F., Honda, H., Aoki, S., Nakazawa, T., Tsutsumi, M., Gamo, T.
ATMOSPHERIC CHEMISTRY AND PHYSICS Vol. 8 ( 20 ) page: 6189-6197 2008
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Determination of formaldehyde mixing ratios in air with PTR-MS: laboratory experiments and field measurements Reviewed
Inomata, S., Tanimoto, H., Kameyama, S., Tsunogai, U., Irie, H., Kanaya, Y., Wang, Z.
ATMOSPHERIC CHEMISTRY AND PHYSICS Vol. 8 ( 2 ) page: 273-284 2008
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Geochemical studies of pore fluid in surface sediment on the Daini Atsumi Knoll Reviewed
Toki, T., Tsunogai, U., Gamo, T., Tanahashi, M.
JOURNAL OF GEOCHEMICAL EXPLORATION Vol. 95 ( 40911 ) page: 29-39 2007.10
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Assessment of winter fluxes of CO2 and CH4 in boreal forest soils of central Alaska estimated by the profile method and the chamber method: a diagnosis of methane emission and implications for the regional carbon budget Reviewed
Kim, Yongwon, Ueyama, Masahito, Nakagawa, Fumiko, Tsunogai, Urumu, Harazono, Yoshinobu, Tanaka, Noriyuki
TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY Vol. 59 ( 2 ) page: 223-233 2007.4
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Geochemical characterization of the organic matter, pore water constituents and shallow methane gas in the eastern part of the Ulleung Basin, East Sea (Japan Sea) Reviewed
Kim, Ji-Hoon, Park, Myong-Ho, Tsunogai, Urumu, Cheong, Tae-Jin , Ryu, Byong-Jae, Lee, Young-Joo, Han, Hyun-Chul, Oh, Jae-Ho , Chang, Ho-Wan
ISLAND ARC Vol. 16 ( 1 ) page: 93-104 2007.3
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Chemical and isotopic characteristics of interstitial fluids within the Taiwan Chelungpu fault Reviewed
Hirono, Tetsuro, Tsunogai, Urumu, Maegawa, Kenji, Toki, Tomohiro, Tanimizu, Masaharu, Soh, Wonn, Lin, Weiren, Yeh, En-Chao, Song, Sheng-Rong, Wang, Chien-Ying
GEOCHEMICAL JOURNAL Vol. 41 ( 2 ) page: 97-102 2007
-
Rare earth elements in the hydrothermal system at Okinawa Trough back-arc basin Reviewed
Hongo, Yayoi, Obata, Hajime, Gamo, Toshitaka, Nakaseama, Miwako , Ishibashi, Junichiro, Konno, Uta, Saegusa, Shunsuke, Ohkubo, Satoru, Tsunogai, Urumu
GEOCHEMICAL JOURNAL Vol. 41 ( 1 ) page: 40923 2007
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Microbial community in a sediment-hosted CO2 lake of the southern Okinawa Trough hydrothermal system Reviewed
Inagaki, Fumio, Kuypers, Marcel M. M., Tsunogai, Urumu, Ishibashi, Jun-ichiro, Nakamura, Ko-ichi, Treude, Tina, Ohkubo, Satoru, Nakaseama, Miwako, Gena, Kaul, Chiba, Hitoshi, Hirayama, Hisako, Nunoura, Takuro, Takai, Ken, Jorgensen, Bo B. , Horikoshi, Koki, Boetius, Antje
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA Vol. 103 ( 38 ) page: 14164-14169 2006.9
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Origins of hydrocarbons in the Sagara oil field, central Japan Reviewed
Toki, Tomohiro, Gamo, Toshitaka, Tsunogai, Urumu
ISLAND ARC Vol. 15 ( 3 ) page: 285-291 2006.9
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Liquid CO2 venting on the seafloor: Yonaguni knoll IV hydrothermal system, Okinawa Trough Reviewed
Konno, Uta, Tsunogai, Urumu, Nakagawa, Fumiko, Nakaseama, Miwako, Ishibashi, Jun-ichiro, Nunoura, Takuro, Nakamura, Ko-ichi
GEOPHYSICAL RESEARCH LETTERS Vol. 33 ( 16 ) 2006.8
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Molecular phylogenetic and chemical analyses of the microbial mats in deep-sea cold seep sediments at the northeastern Japan Sea Reviewed
Arakawa, Shizuka, Sato, Takako, Sato, Rumi, Zhang, Jing, Gamo, Toshitaka, Tsunogai, Urumu, Hirota, Akinari, Yoshida, Yasuhiko, Usami, Ron, Inagaki, Fumio, Kato, Chiaki
EXTREMOPHILES Vol. 10 ( 4 ) page: 311-319 2006.8
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Development of a multibottle gas-tight fluid sampler WHATS II for Japanese submersibles/ROVs Reviewed
Saegusa, S., Tsunogai, U., Nakagawa, F., Kaneko, S.
GEOFLUIDS Vol. 6 ( 3 ) page: 234-240 2006.8
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Geomicrobiological exploration and characterization of a novel deep-sea hydrothermal system at the TOTO caldera in the Mariana Volcanic Arc Reviewed
Nakagawa, T, Takai, K, Suzuki, Y, Hirayama, H, Konno, U, Tsunogai, U, Horikoshi, K
ENVIRONMENTAL MICROBIOLOGY Vol. 8 ( 1 ) page: 37-49 2006.1
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Polar and neutral isopranyl glycerol ether lipids as biomarkers of archaea in near-surface sediments from the Nankai Trough Reviewed
Oba, Masahiro, Sakata, Susumu, Tsunogai, Urumu
ORGANIC GEOCHEMISTRY Vol. 37 ( 12 ) page: 1643-1654 2006
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Stable isotopic compositions of methane and carbon monoxide in the Suiyo hydrothermal plume, Izu-Bonin arc: Tracers for microbial consumption/production Reviewed
Tsunogai, U, Nakagawa, F, Gamo, T, Ishibashi, J
EARTH AND PLANETARY SCIENCE LETTERS Vol. 237 ( 40972 ) page: 326-340 2005.9
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Geochemical studies on submarine groundwater discharges in Toyama Bay using methane as a tracer Reviewed
Kameyama, S., U. Tsunogai, T. Gamo, J. Zhang, M. Suzuki, and Y. Koyama
Chikyukagaku (Geochemistry) Vol. 39 page: 131-140 2005.8
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An analytical system for determining delta O-17 in CO2 using continuous flow-isotope ratio MS Reviewed
Kawagucci, S, Tsunogai, U, Kudo, S, Nakagawa, F, Honda, H , Aoki, S, Nakazawa, T, Gamo, T
ANALYTICAL CHEMISTRY Vol. 77 ( 14 ) page: 4509-4514 2005.7
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Geochemical studies on the microbial activities within the Suiyo seamount hydrothermal plume, Izu-Bonin arc Invited Reviewed
Ishibashi, J., K. Nakamura, K. Okamura, K. Shitashima, T. Toki, U. Tsunogai
Oceanogr. Japan Vol. 14 ( 2 ) page: 251-266 2005.3
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Geochemical studies on the microbial activities within the Suiyo seamount hydrothermal plume, Izu-Bonin arc Invited Reviewed
Tsunogai, U., F. Nakagawa, and K. Okamura
Oceanogr. Japan Vol. 14 ( 2 ) page: 279-295 2005.3
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A selective unsaturated hydrocarbon subtraction technique for stable carbon isotopic analysis of atmospheric methyl chloride, methyl bromide, and C(2)-C(5) saturated hydrocarbons using continuous-flow isotope ratio mass spectrometry Reviewed
Komatsu, DD, Tsunogai, U, Yamaguchi, J, Nakagawa, F
RAPID COMMUNICATIONS IN MASS SPECTROMETRY Vol. 19 ( 4 ) page: 477-483 2005
-
Automobile exhaust as a source of C-13- and D-enriched atmospheric methane in urban areas Reviewed
Nakagawa, F, Tsunogai, U, Komatsu, DD, Yamada, K, Yoshida, N , Moriizumi, J, Nagamine, K, Iida, T, Ikebe, Y
ORGANIC GEOCHEMISTRY Vol. 36 ( 5 ) page: 727-738 2005
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Characterization of C-1-metabolizing prokaryotic communities in methane seep habitats at the Kuroshima Knoll, southern Ryukyu arc, by analyzing pmoA, mmoX, mxaF, mcrA, and 16S rRNA genes Reviewed
Inagaki, F, Tsunogai, U, Suzuki, M, Kosaka, A, Machiyama, H , Takai, K, Nunoura, T, Nealson, KH, Horikoshi, K
APPLIED AND ENVIRONMENTAL MICROBIOLOGY Vol. 70 ( 12 ) page: 7445-7455 2004.12
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Detection of low-chloride fluids beneath a cold seep field on the Nankai accretionary wedge off Kumano, south of Japan Reviewed
Toki, T, Tsunogai, U, Gamo, T, Kuramoto, S, Ashi, J
EARTH AND PLANETARY SCIENCE LETTERS Vol. 228 ( 40910 ) page: 37-47 2004.11
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Geochemical and microbiological evidence for a hydrogen-based, hyperthermophilic subsurface lithoautotrophic microbial ecosystem (HyperSLiME) beneath an active deep-sea hydrothermal field Reviewed
Takai, K, Gamo, T, Tsunogai, U, Nakayama, N, Hirayama, H, Nealson, KH, Horikoshi, K
EXTREMOPHILES Vol. 8 ( 4 ) page: 269-282 2004.8
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Stable isotopic compositions and fractionations of carbon monoxide at coastal and open ocean stations in the Pacific Reviewed
Nakagawa, F, Tsunogai, U, Gamo, T, Yoshida, N
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS Vol. 109 ( C6 ) 2004.6
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Geophysical and geochemical observations on actively seeping hydrocarbon gases on the south-eastern Yellow Sea continental shelf Reviewed
Jeong, KS, Cho, JH, Kim, SR, Hyun, S, Tsunogai, U
GEO-MARINE LETTERS Vol. 24 ( 1 ) page: 53-62 2004.2
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Stable carbon and oxygen isotopic determination of sub-microgram quantities of CaCO3 to analyze individual foraminiferal shells Reviewed
Ishimura, T, Tsunogai, U, Gamo, T
RAPID COMMUNICATIONS IN MASS SPECTROMETRY Vol. 18 ( 23 ) page: 2883-2888 2004
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Discovery of a new hydrothermal venting site in the southernmost Mariana Arc: Al-rich hydrothermal plumes and white smoker activity associated with biogenic methane Reviewed
Gamo, T, Masuda, H, Yamanaka, T, Okamura, K, Ishibashi, J , Nakayama, E, Obata, H, Shitashima, K, Nishio, Y, Hasumoto, H, Watanabe, M, Mitsuzawa, K, Seama, N, Tsunogai, U, Kouzuma, F, Sano, Y
GEOCHEMICAL JOURNAL Vol. 38 ( 6 ) page: 527-534 2004
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An updated estimation of the stable carbon and oxygen isotopic compositions of automobile CO emissions Reviewed
Tsunogai, U, Hachisu, Y, Komatsu, DD, Nakagawa, F, Gamo, T , Akiyama, K
ATMOSPHERIC ENVIRONMENT Vol. 37 ( 35 ) page: 4901-4910 2003.11
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WHATS: a new multi-bottle gas-tight sampler for sea-floor vent fluids Reviewed
Tsunogai, U., T. Toki, N. Nakayama, T. Gamo, H. Kato and S. Kaneko
Chikyukagaku (Geochemistry) Vol. 37 ( 3 ) page: 101-109 2003.8
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Stable isotope evidence for a putative endosymbiont-based lithotrophic Bathymodiolus sp mussel community atop a serpentine seamount Reviewed
Yamanaka, T, Mizota, C, Satake, H, Kouzuma, F, Gamo, T, Tsunogai, U, Miwa, T, Fujioka, K
GEOMICROBIOLOGY JOURNAL Vol. 20 ( 3 ) page: 185-197 2003.5
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Geochemical Exploration of Volcanic Activity on the Sea Floor Using CH4 as a Tracer : Miyakejima Volcano, Izu-Bonin Arc, Japan Reviewed
Toki, T., U. Tsunogai, T. Gamo, and M. Minakawa
Bull. Volcano. Soc. Japan Vol. 48 ( 1 ) page: 63-67 2003
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A simple method for oxygen-18 determination of milligram quantities of water using NaHCO3 reagent Reviewed
Ijiri, A, Tsunogai, U, Gamo, T
RAPID COMMUNICATIONS IN MASS SPECTROMETRY Vol. 17 ( 13 ) page: 1472-1478 2003
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Stable carbon and oxygen isotopic analysis of atmospheric carbon monoxide using continuous-flow isotope ratio MS by isotope ratio monitoring of CO Reviewed
Tsunogai, U, Nakagawa, F, Komatsu, DD, Gamo, T
ANALYTICAL CHEMISTRY Vol. 74 ( 22 ) page: 5695-5700 2002.11
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Carbon isotopic evidence of methane oxidation through sulfate reduction in sediment beneath cold seep vents on the seafloor at Nankai Trough Reviewed
Tsunogai, U, Yoshida, N, Gamo, T
MARINE GEOLOGY Vol. 187 ( 40910 ) page: 145-160 2002.7
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Surface expression of fluid venting at the toe of the Nankai wedge and implications for flow paths Reviewed
Henry, P, Lallemant, S, Nakamura, K, Tsunogai, U, Mazzotti, S, Kobayashi, K
MARINE GEOLOGY Vol. 187 ( 40910 ) page: 119-143 2002.7
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Stable carbon isotopic compositions of light hydrocarbons over the western North Pacific and implication for their photochemical ages Reviewed
Saito, T, Tsunogai, U, Kawamura, K, Nakatsuka, T, Yoshida, N
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES Vol. 107 ( D4 ) 2002.2
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Production mechanism and global budget of N2O inferred from its isotopomers in the western North Pacific Reviewed
Toyoda, S, Yoshida, N, Miwa, T, Matsui, Y, Yamagishi, H, Tsunogai, U, Nojiri, Y, Tsurushima, N
GEOPHYSICAL RESEARCH LETTERS Vol. 29 ( 3 ) 2002.2
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Stable carbon isotopic studies of volatile components in seafloor venting hydrothermal and cold seep fluids, using CF-IRMS Invited Reviewed
Urumu Tsunogai
Chikyukagaku (Geochemistry) Vol. 36 ( 1 ) page: 51-63 2002
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Chemical characteristics of newly discovered black smoker fluids and associated hydrothermal plumes at the Rodriguez Triple Junction, Central Indian Ridge Reviewed
Gamo, T, Chiba, H, Yamanaka, T, Okudaira, T, Hashimoto, J , Tsuchida, S, Ishibashi, J, Kataoka, S, Tsunogai, U, Okamura, K, Sano, Y, Shinjo, R
EARTH AND PLANETARY SCIENCE LETTERS Vol. 193 ( 40972 ) page: 371-379 2001.12
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Carbon isotopic distribution of methane in deep-sea hydrothermal plume, Myojin Knoll Caldera, Izu-Bonin arc: Implications for microbial methane oxidation in the oceans and applications to heat flux estimation Reviewed
Tsunogai, U, Yoshida, N, Ishibashi, J, Gamo, T
GEOCHIMICA ET COSMOCHIMICA ACTA Vol. 64 ( 14 ) page: 2439-2452 2000.7
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Stable carbon and oxygen isotopic analysis of carbon monoxide in natural waters Reviewed
Tsunogai, U, Nakagawa, F, Hachisu, Y, Yoshida, N
RAPID COMMUNICATIONS IN MASS SPECTROMETRY Vol. 14 ( 16 ) page: 1507-1512 2000
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Carbon isotopic compositions of C2-C5 hydrocarbons and methyl chloride in urban, coastal, and maritime atmospheres over the western North Pacific Reviewed
Tsunogai, U, Yoshida, N, Gamo, T
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES Vol. 104 ( D13 ) page: 16033-16039 1999.7
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Carbon isotope measurement of extremely low amounts of CH4: Application to volcanic gases from Satsuma-Iwojima, Japan Reviewed
Sato, M, Tsunogai, U, Ishibashi, J, Notsu, K, Wakita, H
ANALYTICAL SCIENCES Vol. 15 ( 6 ) page: 513-516 1999.6
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Origin of 13C-enriched methane in the crater lake Towada, Japan Reviewed
Nishimura, R, Tsunogai, U, Ishibashi, J, Wakita, H, Nojiri, Y
GEOCHEMICAL JOURNAL Vol. 33 ( 4 ) page: 277-283 1999
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Methane-rich plumes in the Suruga Trough (Japan) and their carbon isotopic characterization Reviewed
Tsunogai, U, Ishibashi, J, Wakita, H, Gamo, T
EARTH AND PLANETARY SCIENCE LETTERS Vol. 160 ( 40910 ) page: 97-105 1998.7
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Neutron activation analysis of deep sea sediments from the regions near Japan Reviewed
Minai, Y, Tsunogai, U, Takahashi, H, Ishibashi, J, Matsumoto, R, Tominaga, T
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY Vol. 216 ( 2 ) page: 265-277 1997.2
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Discrete scaling in earthquake precursory phenomena: Evidence in the Kobe earthquake, Japan Reviewed
Johansen, A, Sornette, D, Wakita, H, Tsunogai, U, Newman, WI , Saleur, H
JOURNAL DE PHYSIQUE I Vol. 6 ( 10 ) page: 1391-1402 1996.10
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Fresh water seepage and pore water recycling on the seafloor: Sagami Trough subduction zone, Japan Reviewed
Tsunogai, U, Ishibashi, J, Wakita, H, Gamo, T, Masuzawa, T , Nakatsuka, T, Nojiri, Y, Nakamura, T
EARTH AND PLANETARY SCIENCE LETTERS Vol. 138 ( 40912 ) page: 157-168 1996.2
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Anomalous changes in groundwater chemistry - Possible precursors of the 1995 Hyogo-ken Nanbu earthquake, Japan Reviewed
Tsunogai, U and Wakita, H
JOURNAL OF PHYSICS OF THE EARTH Vol. 44 ( 4 ) page: 381-390 1996
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Precursory chemical changes in ground water - Kobe Earthquake, Japan Reviewed
Tsunogai, U. and Wakita, H.
SCIENCE Vol. 269 ( 5220 ) page: 61-63 1995.7
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Peculiar features of Suiyo seamount hydrothermal fluids, Izu-Bonin arc: Differences from subaerial volcanism Reviewed
Tsunogai, U, Ishibashi, J, Wakita, H, Gamo, T, Watanabe, K, Kajimura, T, Kanayama, S, Sakai, H
EARTH AND PLANETARY SCIENCE LETTERS Vol. 126 ( 4 ) page: 289-301 1994.9