Faculty Profiles - TSUNOGAI Urumu

Papers - TSUNOGAI Urumu

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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

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

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

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

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

Language：English Publishing type：Research paper (scientific journal) Publisher：Japan Agency for Marine-Earth Science and Technology

We describe in detail the pore water chemistry in the sediments below a white mat around a bunch of bananas at a water depth of 2,200 m in the Tenryu Submarine Canyon. We infer the metabolism of microbes in the sediments around the bananas based on the chemical and isotopic compositions of the pore water. On the basis of the relation between ammonia and total carbonate (ΣCO2) concentrations in the pore water, we identified that an excess ΣCO2 was distributed around the bananas that cannot be explained by the decomposition of organic matter derived from marine organisms, indicating that the bananas decomposed to generate the excess ΣCO2. We conclude that the bananas built a local organic-rich environment, stimulating the activity of organotrophic bacteria.

DOI： 10.5918/jamstecr.25.1

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

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

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

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

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

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

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

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

Accurate and precise quantification of atmospheric nitrate in streams draining land of various uses by using triple oxygen isotopes as tracers Reviewed

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

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

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

Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)

In this paper, recent advances in using stable isotopes of atmospheric nitrate to trace the origin and fate are reviewed. While nitrogen isotopes have been used as the indicators of NOx source contributions to the atmospheric nitrate, cautions must be taken for the isotopic fractionations during the photochemical reactions of NOX in atmosphere. On the other hand, the triple oxygen isotope composition (Δ17O) is a robust tracer for the photochemical reaction path of NOX in atmosphere. Besides, the triple oxygen isotope composition can be applied to trace the fate of atmospheric nitrate and to evaluate biological processing of nitrate within the earth surface ecosystems.

DOI： 10.11203/jar.31.5

The GEOTRACES Intermediate Data Product 2014 Reviewed

The GEOTRACES Group

Marine Chemistry Vol. 177 ( 1 ) page： 1-8 2015.12

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

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

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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Papers - TSUNOGAI Urumu