Done!

Original papers

to be published

LqCO2Mariana

2026

7x. Crowther S, et al. An I-Xe Age 8 Myr After Solar System Formation In A Hayabusa2 Sample Records Alteration On The Parent Planetesimal Of Asteroid Ryugu, Geochimica et Cosmochimica Acta ACCEPTED.7x. Toki T, N Ebina, Y Mitsutome, KH Song, R Shinjo, J Ishibashi, S Kawagucci. Importance of pumiceous sediment in influencing chemistry of hydrothermal fluids in Okinawa Trough: Insights from boron isotopic ratios, Progress in Earth and Planetary Science (PEPS), ACCEPTED.7x. Teshima Y, Y Hayashi, Y Aoki, E Fujioka, S Hiryu, S Kawagucci. evsBat: An automated toolkit for tracking and quantifying rapid movement of nocturnal animals using event cameras. Methods in Ecology and Evolution, ACCEPTED.7x. Matsui Y, W Fujisaki, T Aze, T Miyajima, S Kawagucci, E Tasumi, M Yamamoto, Y Takano, T Toki. An Improved Narrower-Diameter EA/IRMS Method with a Built-in Desulfurization Reactor: Optimization for Nitrogen and Carbon Measurement without Sulfur Matrix Interference, Progress in Earth and Planetary Science (PEPS), ACCEPTED.7x. Matsuoka K, S Takano, S Kawagucci, T Toki, Y Sohrin. Concentrations and isotope ratios of Mo and W in Okinawa Trough hydrothermal fluids: Novel probes for hydrothermal processes in a back-arc basin, Geochemical Journal, ACCEPTED.
7x. Yoshikawa, C., H. Yamaguchi, N.O. Ogawa, A. Makabe, M. Sato, Y. Mino, K. Matsumoto, Y. Nakano, S. Kawagucci, T. Fujiki, N. Harada, M. Kawachi, N. Ohkouchi. Nitrogenous sources for summertime phytoplankton at two contrasting stations in the subarctic and subtropical western North Pacific, Progress in Oceanography, 240, 103614, doi.org/10.1016/j.pocean.2025.103614 2026.

2025

74. Sukigara C, T Yokokawa, A Makabe, K Mori, Y Nakajima, S Kouketsu, E Tasumi, M Hasegawa-Takano, N F Ishikawa, C Jiang, S Jiang, R Miyase, S Nishino, Y Sugai, K Tominaga, H Uchida, Y Yoshida, S Yoshizawa, S Kawagucci. Diel and daily changes of water mass structure and biogeochemical processes in early spring in the western subtropical North Pacific, Progress in Earth and Planetary Science (PEPS) 12, 105, 10.1186/s40645-025-00776-6 , 2025.73. Isobe N, K Tanaka, S Ishii, Y Shimane, S Okada, K Daicho, W Sakuma, K Uetani, T Yoshimura, K Kimoto, S Kimura, T Saito, R Nakajima, M Tsuchiya, T Ikuta, S Kawagucci, T Iwata, H Nomaki. Fully circular shapable transparent paperboard with closed-loop recyclability and marine biodegradability across shallow to deep sea. Science Advances 11, eads2426, DOI: 10.1126/sciadv.ads2426 2025.72. Taguchi K., Y. Ueno, A. Gilbert, Y. Matsui, T. Shibuya, S. Kawagucci. Clumped 13C-13C isotopologue signatures of thermogenic ethane. Geochimica et Cosmochimica Acta doi: 10.1016/j.gca.2025.02.017 2025.71. Takahashi T., E. Tasumi, S. Tagawa, Y. Majima, J. Miyazaki, N. Nishimura, S. Kawagucci, T. Shibuya, K. Takai. Comparison of phase conditions of CO2-rich fluids measured at different hydrothermal fields in the Okinawa Trough using in situ deep-sea Raman spectrometer. ACS Earth and Space Chemistry doi: 10.1021/acsearthspacechem.4c00246 2025.

2024

70. Chen, C., N. Hookabe, R. Hashimoto, S. Shimooka, S. Shiraki, D. Uyeno, S. Kawagucci. Faunal composition of the Sumisu Caldera hydrothermal vent field as a key baseline for conservation in light of deep-sea mining, Aquatic Conservation: Marine and Freshwater Ecosystems, 34:e70009, doi: 10.1002/aqc.70009, 2024. 69. Takatsuka, S., N. Miyamoto, H. Sato, Y. Morino, Y. Kurita, A. Yabuki, C. Chen, and S. Kawagucci. Millisecond-scale behaviours of plankton quantified in vitro and in situ using Event-based Vision Sensor, Ecology and Evolution, doi: 10.1002/ece3.70150, 2024.68. Nomaki, H., C. Chen, N.O. Ogawa, Y. Miyairi, N. Ohkouchi, A. Makabe, S. Kawagucci, Y. Yokoyama, M. Shimanaga. Elucidating carbon sources of hydrothermal vent animals using natural 14C abundance and habitat water temperature, Limnology and Oceanography, doi: 10.1002/lno.12570, 2024. 67. Omura, T., N. Isobe, T. Miura, S. Ishii, M. Mori, Y. Ishitani, S. Kimura, K. Hidaka, K. Komiyama, M. Suzuki, K. Kasuya, H. Nomaki, R. Nakajima, M. Tsuchiya, S. Kawagucci, H. Mori, A. Nakayama, M. Kunioka, K. Kamino, T. Iwata. Microbial decomposition of biodegradable plastics on the deep-sea floor, Nature Communications, 15: 568, https://doi.org/10.1038/s41467-023-44368-8, 2024.66. Lin TH and S. Kawagucci. Acoustic twilight: A year-long seafloor monitoring unveils phenological patterns in the abyssal soundscape. Limnology and Oceanography Letters, 9: 23-32, 10.1002/lol2.10358, 2024.

2023

65. Kawagucci, S., S. Sakai, E. Tasumi, M. Hirai, Y. Takaki, T. Nunoura, M. Saitoh, Y. Ueno, N. Yoshida, T. Shibuya, J. C. Sample, T. Okumura, K. Takai. Deep subseafloor biogeochemical processes and microbial populations potentially associated with the 2011 Tohoku-oki Earthquake at the Japan Trench accretinary wedge (IODP Expedition 343). Microbes and Environments, 38: ME22108, doi:10.1264/jsme2.ME22108, 2023.64. Kawagucci, S., Y. Matsui, H. Nomaki, and C. Chen. Deep-sea freezer. Frontiers in Marine Science, 10:1179818. https://doi.org/10.3389/fmars.2023.1179818, 2023.63. Broadley et al. (48th of 64 authors), The noble gas and nitrogen relationship between Ryugu and carbonaceous chondrites, Geochimica et Cosmochimica Acta, https://doi.org/10.1016/j.gca.2023.01.020, 2023.

2022

62. Otis, B., C. Chen, T. Giguère, S. Kawagucci, V. Tunnicliffe, H. K. Watanabe, S. Mitarai: Species Assemblage Networks Identify Regional Connectivity Pathways Among Hydrothermal Vents in the Northwest Pacific. Ecology and Evolution, 12:e9612, https://doi.org/10.1002/ece3.9612, 2022. 61. Toki T., Nohara T., Urata Y., Shinjo R., Hokakubo-Watanabe S, Ishibashi J-i., Kawagucci S.: Sr isotopic ratios of hydrothermal fluids from the Okinawa Trough and the implications of variation in fluid–sediment interactions. Prog Earth Planet Sci (PEPS), 9, 59, doi: 10.1186/s40645-022-00519-x, 2022.60. Wakita M., S. Watanabe, J. Yoshino, K. Oguri, H. Nomaki, S. Kawagucci, K. Ariyoshi, A. Nagano, K. Fujikura: Deep-sea bottom-water environment change caused by sediment resuspension on the continental slope off Sanriku, Japan, before and after the 2011 Tohoku Earthquake. Progress in Earth and Planetary Science (PEPS), 9, 56, doi: 10.1186/s40645-022-00515-1 2022.59. Okazaki et al. (8th of 125 authors). First asteroid gas sample delivered by the Hayabusa2 mission: A treasure box from Ryugu. Science Advances, 8, eabo7239, doi: 10.1126/sciadv.abo7239, 2022.58. Okazaki et al. (26th of 124 authors). Noble gases and nitrogen in samples of asteroid Ryugu record its volatile sources and recent surface evolution. Science 379, doi: 10.1126/science.abo0431, 2023.57. Hiraoka, S., T. Sumida, M. Hirai, A. Toyoda, S. Kawagucci, T. Yokokawa, T. Nunoura. Diverse DNA modification in marine prokaryotic and viral communities. Nucleic Acids Research. gkab1292, 10.1093/nar/gkab1292 , 2022.

2021

56. Kawagucci, S., Matsui, Y., Makabe, A., Fukuba, T., Onishi, Y., Nunoura, T., and Yokokawa, T.: Hydrogen and carbon isotope fractionation factors of aerobic methane oxidation in deep-sea water, Biogeosciences, 18, 5351–5362, https://doi.org/10.5194/bg-18-5351-2021, 2021.55. Chen C, TH Lin, Hiromi K Watanabe, T Akamatsu, S Kawagucci. Baseline soundscapes of deep-sea habitats in Japan reveal heterogeneity among ecosystems and sensitivity to anthropogenic impacts, Limnol. Oceanogr. 66, 3714–3727, https://doi.org/10.1002/lno.11911, 2021.54. Shigemitsu M, T Yokokawa, H Uchida, S Kawagucci, A Murata. Sedimentary supply of humic-like fluorescent dissolved organic matter and its implication for chemoautotrophic microbial activity in the Izu-Ogasawara Trench, Scientific Reports, 11 19006, https://doi.org/10.1038/s41598-021-97774-7, 2021.53. Matsui Y, W Fujisaki, J Torimoto, K Tanaka, M Nishizawa, M Yamamoto, S Kawagucci, Y Shimane, M Tei, K Uematsu, A Tame, Y Kawahito, T Kameda. Gold-coated Silver Capsule for Elemental Analyzer-Isotope Ratio Mass Spectrometer: Robust against Pretreatment of Rock Material for Organic Carbon and delta13C Analyses, Geochemical Journal, 55, doi:10.2343/geochemj.2.0626, 2021.

2020

52. Kawagucci S, T Miwa, D Lindsay, E Ogura, H Yamamoto, K Nishibayashi, H Yokooka, S Nishi, A Takahashi, S Lee. Deep-sea water displacement from a turbidity current induced by the Super Typhoon Hagibis, PeerJ, 8:e10429, 10.7717/peerj.10429, 2020. 51. Kawagucci S, Y Matsui, G Früh-Green. Radiocarbon content of carbon dioxide and methane in hydrothermal fluids of Okinawa Trough vents, Geochemical Journal, 54, 129-138, doi:10.2343/geochemj.2.0595, 2020.

2019

50. Breider F, C Yoshikawa, A Makabe, S Toyoda, M Wakita, Y Matsui, S Kawagucci, T Fujiki, N Harada, N Yoshida. Response of N2O production rate to ocean acidification in the western North Pacific. Nature Climate Change. 9: 954–958, doi:10.1038/s41558-019-0605-7, 2019.49. Lin TH, C Chen, HK Watanabe, S Kawagucci, H Yamamoto, T Akamatsu, Using soundscapes to assess deep-sea benthic ecosystems, Trends in Ecology & Evolution 34(12), 1069-1071. doi: 10.1016/j.tree.2019.09.006, 201948. Zhou K., R. Zhang, J. Sun, W. Zhang, R-M. Tian, C. Chen, S. Kawagucci, Y. Xu, Potential SUP05-Phage Interactions in Hydrothermal Vent Sponges, Applied and Environmental Microbiology, DOI: 10.1128/AEM.00992-19, 2019.47. Kawagucci S. and J.S. Seewald. Compositional and isotopic characteristics of hydrocarbons generated by a hydrothermal experiment simulating seafloor sediment alteration stepwise heating from 275 to 361° C at 30 MPa, Geochemical Journal, 53, 281-291, 2019.

2018

46. Kawagucci S., J. Miyazaki, Y. Morono, J.S. Seewald, C.G. Wheat, K. Takai. Cool, alkaline serpentinite formation fluid regime with scarce microbial habitability and possible abiotic synthesis beneath the South Chamorro Seamount, Progress in Earth and Planetary Science (PEPS), 5:74, 2018.45. Kawagucci S., A. Makabe, T. Kodama, Y. Matsui, C. Yoshikawa, E. Ono, M. Wakita, T. Nunoura, H. Uchida, T. Yokokawa. Hadal water biogeochemistry over the Izu-Ogasawara Trench observed with a full-depth CTD-CMS, Ocean Science, 14, 575-588, doi: 10.5194/os-14-575-2018, 2018.44. Ijiri, A., F. Inagaki, Y. Kubo, R.R. Adhikari, S. Hattori, T. Hoshino, H. Imachi, S. Kawagucci, Y. Morono, Y. Ohtomo, S. Ono, S. Sakai, K. Takai, T. Toki, D.T. Wang, M.Y. Yoshinaga, G. L. Arnold, J. Ashi, D.H. Case, T. Feseker, K.-U. Hinrichs, Y. Ikegawa, M. Ikehara, J. Kallmeyer, H. Kumagai, M.A. Lever, S. Morita, K. Nakamura, Y. Nakamura, M. Nishizawa, V.J. Orphan, H. Røy, F. Schmidt, A. Tani, W. Tanikawa, T. Terada, H. Tomaru, T. Tsuji, U. Tsunogai, Y.T. Yamaguchi, N. Yoshida. Deep-biosphere methane production simulated by geofluids in the Nankai accretionary complex, Science Advances, 4(6), eaao4631, DOI: 10.1126/sciadv.aao4631, 2018.43. Onishi, Y., T. Yamanaka, T. Okumura, S. Kawagucci, H. K. Watanabe, Y. Ohara. Evaluation of nutrient and energy sources of the deepest known serpentinite-hosted ecosystem using stable carbon, nitrogen, and sulfur isotopes, PLoS ONE, 13(6), e0199000, doi: 10.1371/journal.pone.0199000, 2018.

2017

42. Miyazaki J, S Kawagucci, A Makabe, A Takahashi, K Kitada, J Torimoto, Y Matsui, E Tasumi, T Shibuya, K Nakamura, S Horai, S Sato, J Ishibashi, H Kanzaki, S Nakagawa, M Hirai, Y Takaki, K Okino, HK Watanabe, H Kumagai, C Chen. Deepest and hottest hydrothermal activity in the Okinawa Trough: the Yokosuka site at Yaeyama knoll, Royal Society Open Science, DOI: 10.1098/rsos.171570 , 2017.41. Chen, C., H.K. Watanabe, J. Miyazaki, S. Kawagucci, Unanticipated discovery of two rare gastropod molluscs from recently located hydrothermally influenced areas in the Okinawa Trough, PeerJ 5:e4121; DOI 10.7717/peerj.4121 , 2017.40. Sano Y., N. Kinoshita, T. Kagoshima, N. Takahata, S. Sakata, T. Toki, S. Kawagucci, A. Waseda, T. Lan, H. Wen, A.T. Chen, T.F. Yang, Z. Guodong, Y. Tomonaga, E. Roulleau and D.L. Pinti, Origin of methane-rich natural gas at the West Pacific convergent plate boundary, Sci Rep. 7: 15646 | DOI:10.1038/s41598-017-15959-5 2017.39. Fuchida, S., Yokoyama, A., Fukuchi, R., Ishibashi, J., Kawagucci, S., S., Kawachi, M., Koshikawa, H. Leaching of metals and metalloids from hydrothermal ore particulates and their effects on marine phytoplankton. ACS Omega, 2(7) 3175-3182, doi: 10.1021/acsomega.7b00081, 2017. 38. Miyazaki, J., A. Makabe, Y. Matsui, N. Ebina, S. Tsutsumi, J-i Ishibashi, C. Chen, S. Kaneko, K. Takai, S. Kawagucci*, WHATS-3: An improved flow-through multi-bottle fluid sampler for deep-sea geofluid research. Front. Earth Sci. 5, 45, doi: 10.3389/feart.2017.00045, 2017.

2016

37. Tokunaga, K. T. Uruga, K. Nitta, Y. Terada, O. Sekizawa, S. Kawagucci, and Y. Takahashi, Application of arsenic in barite as a redox indicator for suboxic/anoxic redox condition, Chemical Geology, 447, 59-69, 2016.36. Kawagucci, S., J. Miyazaki, T. Noguchi, K. Okamura, T. Shibuya, T. Watsuji, M. Nishizawa, H. Watanabe, K. Okino, N. Takahata, Y. Sano, K. Nakamura, A. Shuto, M. Abe, Y. Takaki, T. Nunoura, M. Koonjul, M. Singh, G. Beedessee, M. Khishma, V. Bhoyroo, D. Bissessur, L.S. Kumar, D. Marie, K. Tamaki, and K. Takai, Fluid chemistry in the Solitaire and Dodo hydrothermal fields of the Central Indian Ridge, Geofluids, 16, 988– 1005, DOI: 10.1111/gfl.12201, 2016.35. 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, Ken Takai, Geochemical characteristics of hydrothermal fluids at Hatoma Knoll in the southern Okinawa Trough, Geochemical Journal, 50, 493-525, doi:10.2343/geochemj.2.0449, 2016.34. Yanagawa K., A. Ijiri, A. Breuker, S. Sakai, Y. Miyoshi, S. Kawagucci, T. Noguchi, M. Hirai, A. Schippers, J. Ishibashi, Y. Takaki, M. Sunamura, T. Urabe, T. Nunoura, and K. Takai, Defining boundaries for the distribution of microbial communities beneath the sediment-buried, hydrothermally active seafloor, The ISME Journal, 11, 529-542. doi:10.1038/ismej.2016.119, 2017.33. Nunoura T., M. Hirai, Y. Y-Takashima, M. Nishizawa, S. Kawagucci, T. Yokokawa, J. Miyazaki, O. Koide, H. Makita, Y. Takaki, M. Sunamura, and K. Takai, Distribution and niche separation of planktonic microbial communities in the water columns from the surface to the hadal waters of the Japan Trench under the eutrophic oceanhas, Frontiers in Microbiology, 7:1261. doi: 10.3389/fmicb.2016.01261, 2016.32. Okumura T., S. Kawagucci*, Y. Saito, Y. Matsui, K. Takai, and H. Imachi, Hydrogen and carbon isotope systematics in hydrogenotrophic methanogenesis under H2-limited and -enriched conditions: Implications for the origin of methane and its isotopic diagnosis, Progress in Earth and Planetary Science, 3:14, DOI: 10.1186/s40645-016-0088-3, 2016.31. Nozaki T., J. Ishibashi, K. Shimada, T. Nagase, Y. Takaya, Y. Kato, S. Kawagucci, T. Watsuji, T. Shibuya, R. Yamada, T. Saruhashi, M. Kyo, and K. Takai, Rapid growth of mineral deposits at artificial seafloor hydrothermal vents, Scientific Reports, 6, 22163, doi:10.1038/srep22163, 2016.30. Ikuta, T., Y. Takaki, Y. Nagai, S. Shimamura, M. Tsuda, S. Kawagucci, Y. Aoki, K. Inoue, M. Teruya, K. Satou, K. Teruya, M. Shimoji, H. Tamotsu, T. Hirano, T. Maruyama, T. Yoshida, Heterogeneous composition of key metabolic gene clusters in a vent mussel symbiont population. ISME Journal, 10, 990-1001, 2016.

2015

29. Nakamura, K., S. Kawagucci, K. Kitada, H. Kumagai, K. Takai, and K. Okino, Water column imaging with multibeam echo-sounding (MBES) in the mid-Okinawa Trough: Implications for distribution of deep-sea hydrothermal vent sites and the cause of acoustic water column anomaly. Geochemical Journal, 49, 579-596, 2015. 28. Nakajima R., H. Yamamoto, S. Kawagucci, Y. Takaya, T. Nozaki, C. Chen, K. Fujikura, T. Miwa, and K. Takai, Post-drilling changes in seabed landscape and megabenthos in a deep-sea hydrothermal system, the Iheya North field, Okinawa Trough. PLOS ONE, 10(4): e0123095. doi: 10.1371/journal.pone.0123095, 2015.27. Shimizu, K., K. Suzuki, M. Saitoh, U. Konno, S. Kawagucci, and Y. Ueno, Simultaneous determinations of fluorine, chlorine, and sulfur in rock samples by ion chromatography combined with pyrohydrolysis. Geochemical Journal, 49, 113-124, 2015.26. Watsuji, T., A. Yamamoto, K. Motoki, K. Ueda, S. Kawagucci, K. Takai, E. Hada, and Y. Takaki, Molecular evidence of difestion and absorption of epibiotic bacterial community by deep-sea crab Shinkaia crosnieri, The ISME Journal, 9, 821-831, 2015.

2014

25. Nogi, Y., M. Abe, S. Kawagucci, and H. Hirayama, Psychrobium conchae gen. nov, sp. nov., a psychrophilic marine bacterium isolated from the Iheya North hydrothermal field, Okinawa Trough, off Japan, International Journal of Systematic and Evolutionary Microbiology, 64, 3668-3675, 2014.24. Kawagucci, S., M. Kobayashi, S. Hattori, K. Yamada, Y. Ueno, K. Takai, and N. Yoshida, Hydrogen isotope systematics among H2-H2O-CH4 during the growth of the hydrogenotrophic methanogen Methanothermobacter thermoautotrophicus strain DELTA_H, Geochimica et Cosmochimica Acta, 142, 601-614, 2014. 23. Kawagucci, S., T. Narita, H. Obata, H. Ogawa, and T. Gamo, Molecular hydrogen and carbon monoxide in seawater in an area adjacent to Kuroshio and Honshu Island in Japan, Marine Chemistry, 164, 75-83, 2014. 22. Ishibashi, J., T. Noguchi, T. Toki, S. Miyabe, S. Yamagami, Y. Onishi, T. Yamanaka, Y. Yokoyama, E. Omori, Y. Takahashi, K. Hatada, Y. Nakaguchi, M. Yoshizaki, U. Konno, T. Shibuya, K. Takai, F. Inagaki, and S. Kawagucci, Diversity of fluid geochemistry affected by processes during fluid upwelling in active hydrothermal fluids in the Izena Hole, the middle Okinawa Trough back-arc basin, Geochemical Journal, 48, 357-369, 2014.21. Sano, Y., T. Hara, N. Takahata, S. Kawagucci, M. Honda, Y. Nishio, W. Tanigawa, A. Hasegawa, and K. Hattori, Helium anomalies suggest a fluid pathway from mantle to trench during the 2011 Tohoku-oki earthquake, Nature Communications, 5, 3084, doi:10.1038/ncomms4084, 2014.20. Watsuji, T., A. Yamamoto, Y. Takaki, K. Ueda, S. Kawagucci, and K. Takai, Diversity and methane oxidation of active epibiotic methanotrophs on live Shinkaia crosnieri, The ISME Journal, 8, 1020-1031, 2014.

2013

19. Kawagucci, S., J. Miyazaki, R. Nakajima, T. Nozaki, Y. Takaya, Y. Kato, T. Shibuya, U. Konno, Y. Nakaguchi, K. Hatada, H. Hirayama, K. Fujikura, Y. Furushima, H. Yamamoto, T. Watsuji, J. Ishibashi, and K. Takai, Post-drilling changes in fluid discharge pattern, mineral deposition, and fluid chemistry in the Iheya North hydrothermal field, Okinawa Trough, Geochem. Geophys. Geosyst., 14, 4774-4790, DOI: 10.1002/2013GC004895, 2013.18. Yamamoto, M., R. Nakamura, K. Oguri, S. Kawagucci, K. Suzuki, K. Hashimoto, and K. Takai, Electricity generation and illumination via an environmental fuel cell in deep-sea hydrothermal vents, Angewandte Chemie, DOI: 10.1002/anie.201302704, 2013. 17. Roulleau, E., Y. Sano, N. Takahata, S. Kawagucci, and H. Takahashi, He, N and C isotopes and fluxes in Aira caldera: Comparative study of hydrothermal activity in Sakurajima volcano and Wakamiko crater, Kyushu, Japan, Journal of Volcanology and Geothermal Research, 258, 163–175, 2013.16. Tokunaga, K., Y. Yokoyama, S. Kawagucci, A. Sakaguchi, Y. Terada, and Y. Takahashi, Selenium coprecipitated with barite in marine sediments as a possible redox indicator, Chemistry Letter, doi:10.1246/cl.130399, 2013.15. Konno, U., K. Takai, and S. Kawagucci, Stable chlorine isotope ratio analysis of subnanomolar level methyl chloride by continuous-flow isotope ratio mass spectrometry, Geochemical Journal, 47, 469-473, 2013. 14. Kawagucci, S., Y. Ueno, K. Takai, T. Toki, M. Ito, K. Inoue, A. Makabe, N. Yoshida, Y. Muramatsu, N. Takahata, Y. Sano, T. Narita, G. Teranishi, H. Obata, S. Nakagawa, T. Nunoura, and T. Gamo, Geochemical origin of hydrothermal fluid methane in sediment-associated fields and its relevance to the geographical distribution of whole hydrothermal circulation, Chemical Geology, 339, 213-225, 2013.

2012

13. Noguchi, T., W. Tanikawa, T. Hirose, W. Lin, S. Kawagucci, Y. Yoshida-Takashima, M. C. Honda, K. Takai, H. Kitazato, and K. Okamura, Dynamic process of turbidity generation triggered by the 2011 Tohoku-Oki earthquake, Geochem. Geophys. Geosyst., 13, Q11003, doi:10.1029/2012GC004360, 2012. 12. Watsuji, T., M. Nishizawa, Y. Morono, H. Hirayama, S. Kawagucci, N. Takahata, Y. Sano, and K. Takai, Cell-Specific Thioautotrophic Productivity of Epsilon-Proteobacterial Epibionts Associated with Shinkaia crosnieri, PLoS ONE, 7(10): e46282. doi:10.1371/journal.pone.0046282, 2012.11. 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, M. Hirai, W. Lin, H. Kitazato, and K. Takai, Disturbance of deep-sea environments induced by the M9.0 Tohoku Earthquake, Scientific Reports, 2, 270, doi:10.1038/srep00270, 2012.10. Nakamura, K., H. Watanabe, J. Miyazaki, K. Takai, S. Kawagucci, T. Noguchi, S. Nemoto, T. Watsuji, T. Matsuzaki, T. Shibuya, K. Okamura, M. Mochizuki, Y. Orihashi, T. Ura, A. Asada, D. Marie, M. Koonjul, M. Singh, G. Beedessee, M. Bhikajee, and K. Tamaki, Discovery of new hydrothermal activity and chemosynthetic fauna on the Central Indian Ridge at 18˚-20˚S. PLoS ONE 7(3): e32965. doi:10.1371/journal.pone.0032965, 2012.

2011

9. Hirose, T., S. Kawagucci, and K. Suzuki, Mechanoradical H2 generation during simulated faulting: Implications for an earthquake-driven subsurface biosphere,Geophysical Research Letters, 38, L17303, doi:10.1029/2011GL048850, 2011.8. Kawagucci, S., H. Chiba, J. Ishibashi, T. Yamanaka, T. Toki, Y. Muramatsu, Y. Ueno, A. Makabe, K. Inoue, N. Yoshida, S. Nakagawa, T. Nunoura, K. Takai, N. Takahata, Y. Sano, T. Narita, G. Teranishi, H. Obata, and T. Gamo, Hydrothermal fluid geochemistry at the Iheya North field in the mid-Okinawa Trough: Implication for origin of methane in subseafloor fluid circulation systems, Geochemical Journal, 45, 109-124, 2011.

2010

7. Kawagucci, S., K. Shirai, T.F. Lan, N. Takahata, U. Tsunogai, Y. Sano, and T. Gamo, Gas geochemical characteristics of hydrothermal plumes at the HAKUREI and JADE vent sites, the Izena Cauldron, Okinawa Trough, Geochemical Journal, 44, 507-518, 2010. 6. Kawagucci, S., T. Toki, J. Ishibashi, K. Takai, M. Ito, T. Oomori, and T. Gamo, Isotopic variation of molecular hydrogen in various temperatures of hydrothermal fluids detected by a new analytical method, Journal of Geophysical Research – Biogeoscience, 115, G03021, doi:10.1029/2009JG001203, 2010.

2009

none

2008

5. Kawagucci, S., K. Okamura, K. Kiyota, U. Tsunogai, Y. Sano, K. Tamaki, and T. Gamo, Methane, manganese, and helium‐3 in newly discovered hydrothermal plumes over the Central Indian Ridge, 18°–20°S, Geochem. Geophys. Geosyst., 9, Q10002, doi:10.1029/2008GC002082, 2008. 4. Kawagucci, S., U. Tsunogai, S. Kudo, F. Nakagawa, H.Honda, S.Aoki, T.Nakazawa, M. Tsutsumi, and T.Gamo, Long-term observation of mass-independent oxygen isotope anomaly in stratospheric CO2, Atmos. Chem. Phys., 8, 6189-6197, 2008.3. Kumagai, H., K. Nakamura, T. Toki, T. Morishita, K. Okino, J. Ishibashi, U. Tsunogai, S. Kawagucci, T. Gamo, T. Shibuya, T. Sawaguchi, N. Neo, M. Joshima, T. Sato, and Ken Takai, Geological background of the Kairei and Edmond hydrothermal fields along the Central Indian Ridge: Implications of their vent fluids' distinct chemistry, Geofluid, 8, 239-251, doi:10.1111/j.1468-8123.2008.00223.x, 2008.2. Takai, K., T. Nunoura, J. Ishibashi, J. Lupton, R. Suzuki, H. Hamasaki, Y. Ueno, S. Kawagucci, T. Gamo, Y. Suzuki, H. Hirayama, and K. Horikoshi, Variability in the microbial communities and hydrothermal fluid chemistry at the newly-discovered Mariner hydrothermal field, southern Lau Basin, Journal of Geophysical Research - Biogeoscience, 113, G02031, doi:10.1029/2007JG000636, 2008.

2007

none

2006

none

2005

1. Kawagucci, S., U. Tsunogai, S. Kudo, F. Nakagawa, H.Honda, S.Aoki, T.Nakazawa, and T.Gamo, An analytical system for determining d17O in CO2 using Continuous Flow-Isotope Ratio MS, Analytical Chemistry, 77, 4509-4514, doi:10.1021/ac050266u, 2005.

日本語の論文など

査読あり

7. 岩永理恵・川口慎介，学術雑誌『社会政策』の発刊は持続可能か，社会政策 17, 67-77, doi: 10.24533/spls.17.1_67, 2025.6. 手嶋優風・小川真由・黒田充樹・川口慎介，人新世における海中の音世界—Soundscape—，日本音響学会誌 81, 123-132, 2025.5. 松元美里・野牧秀隆・川口慎介・古賀夕貴・樋口汰樹・松本英顕・西牟田昂・龍田典子・上野大介, 相模湾および小笠原海溝の深海堆積物コアを対象としたにおい嗅ぎGC（GC-O）による人為起源におい物質の検索, 環境化学, 30, 94-99, 2020.4. 埴淵知哉・川口慎介，日本における学術研究団体（学会）の現状、E-journal GEO, 15(1) 137-155, Doi: 10.4157/ejgeo.15.137, 2020.3. 矢萩拓也・CHEN Chong・川口慎介, 深海の化学合成生態系動物群集の幼生分散過程, 海の研究 28, 97-125, 2019.2. 川口慎介, 還元性気体に注目した深海底環境生態系に関する地球化学的研究, 地球化学, 49, 79-97, 2015（ Kawagucci, S., Molecular hydrogen and methane biogeochemistry in deep-sea geofluid ecosystems, Chikyukagaku (in Japanese with English abstract), 49, 79-97, 2015）.1. 川口慎介・土岐知弘，海底下地殻内流体系のメタンの起源，地球化学，44，137-154，2010（ Kawagucci, S. and T. Toki, Origin of methane in subseafloor geofluid systems, Chikyukagaku (in Japanese with English abstract) 44, 137-154, 2010.）.

査読なし

5. 川口慎介, 深海調査の何たるか，深海サウンドスケープへの誘い, 日本音響学会誌 79, 105-110, 2023.4. 川口慎介, 化学組成解析に基づく海洋－地圏－生物圏相互作用の追求（第3 回海洋化学奨励賞受賞記念論文）, 海洋科学研究, 121-127, 2019.3. 川口慎介, 成層圏から深海底までその足跡を追う，月刊海洋号外「蒲生俊敬教授退官記念号」2. 高井研・川口慎介, 学会の功罪を問う ―― 第31回日本微生物生態学会横須賀大会パネルディスカッション「学会って必要か? 微生物生態学会ってホントにいるけ?」を通じた学会再考，科学，12-15，2017.1. 高畑直人・川口慎介・Emilie Roulleau・佐野有司，海底熱水活動とヘリウム同位体，号外海洋「海洋の微量元素・同位体に関するGEOTRACES観測研究—進捗と新たな展開—」，34-44，2014..

その他

13. 日本学術会議若手アカデミー，見解「2040年の科学・学術と社会を見据えていま取り組むべき10の課題」，9月28日，2023 12. 日本学術会議地球惑星科学委員会地球惑星科学社会貢献分科会，見解「より強靭な原子力災害対策に向けたアカデミアからの提案―放射性物質拡散予測の積極的な利活用を推進すべき時期に来たと考えます」，9月26日，2023 11. 日本学術会議第三部理工学ジェンダー・ダイバーシティ分科会, 見解「女性の理工系進学を加速するために必要な、初等中等教育へのジェンダー視点導入と望ましい理数系教育の環境整備」，9月22日，2023 10. 日本学術会議，提言「壊滅的災害を乗り越えるためのレジリエンス確保のあり方」，8月29日，2023 9. 日本学術会議，回答「研究力強化－特に大学等における研究環境改善の視点から－に関する審議について」，8月8日，2022 8. 日本学術会議科学者委員会学協会連携分科会，記録・日本学術会議に関する学協会・大学等の声明等一覧，1月17日，2022 7. 日本学術会議科学者委員会学協会連携分科会，記録・日本学術会議と国内の学協会連合等との連携に関する調査報告書，1月17日，2022 6. 日本学術会議若手アカデミー，提言・シチズンサイエンスを推進する社会システムの構築を目指して，9月14日，2020 5. 日本学術会議科学と社会委員会・同科学と社会企画分科会，報告・学術とSDGsのネクストステップ－社会とともに考えるために－，9月4日，2020 4. 日本学術会議科学者委員会軍事的安全保障研究声明に関するフォローアップ分科会，報告・「軍事的安全保障研究に関する声明」への研究機関・学協会の対応と論点，8月4日，2020 3. 日本学術会議地球惑星科学委員会地球惑星科学人材育成分科会，提言・初等中等教育および生涯教育における地球教育の重要性：変動する地球に生きるための素養として，6月23日，2020 2. 日本学術会議地球惑星科学委員会・地球惑星科学企画分科会・地球・惑星圏分科会，報告・地球惑星科学分野における科学・夢ロードマップ（改訂）2020，5月15日，2020 1. 日本学術会議科学者委員会学協会連携分科会，提言・学協会に係る法人制度ー運用の見直し、改善等について，2月14日，2019

Book(s)

5. 川口慎介, 深海問答, エクスナレッジ, ISBN-10 ‏ : ‎ 4767833183, ISBN-13 ‏ : ‎ 978-4767833187, 2024. 4. Ishibashi, J., Y. Miyoshi, K. Tanaka, E. Omori, Y. Takahashi, Y. Furuzawa, T. Yamanaka, S. Kawagucci, J. Miyazaki, U. Konno, S. Watanabe, K. Yanagawa, R. Yoshizumi, and T. Urabe, Pore Fluid Chemistry Beneath Active Hydrothermal Fields in the Mid-Okinawa Trough: Results of Shallow Drillings by BMS During TAIGA11 Cruise, in Subseafloor Biosphere Linked to Hydrothermal Systems; TAIGA Concept, Edited by J. Ishibashi, K. Okino, and M Sunamura, Springer Japan, Tokyo, pp 535-560, 2015. (open access)3. Yokoyama, Y. Y. Takahashi, Y. Miyoshi, J. Ishibashi, and S. Kawagucci, Sediment–Pore Water System Associated with Native Sulfur Formation at Jade Hydrothermal Field in Okinawa Trough, in Subseafloor biosphere linked to global hydrothermal systems; TAIGA Concept, Edited by J. Ishibashi, K. Okino, and M Sunamura, Springer Japan, Tokyo, pp 405-419, 2015. (open access)2. Kawagucci, S., Fluid geochemistry of high-temperature hydrothermal fields in the Okinawa Trough, in Subseafloor biosphere linked to global hydrothermal systems; TAIGA Concept, Edited by J. Ishibashi, K. Okino, and M Sunamura, Springer Japan, Tokyo, pp 387-403, 2015. (open access)1. Toki, T., K. Maegawa, U. Tsunogai, S. Kawagucci, N. Takahata, Y. Sano, J. Ashi, M. Kinoshita, and T. Gamo, Gas chemistry of pore fluids from Oomine ridge on the Nankai Accretionary Prism, in Accretionary Prisms and Convergent Margin Tectonics in the Northwest Pacific Basin, Edited by Y Ogawa, R. Anma and Y. Dilek, Springer book series, 247-262, 2011.

Invited/Keynote Talks

5. KAWAGUCCI S., Serpentinization-involved geofluid systems, InterRidge Theoretical Institute, Banyuls-sur-mer, Nov. 2019, Invited keynote.4. 川口慎介，海底資源開発の環境影響評価と地球化学研究，第62回日本地球化学会年会，横浜，2015年9月，基調講演. 3. 川口慎介，還元性気体に注目した深海底環境生態系に関する地球化学的研究（奨励賞記念講演），第59回日本地球化学会年会，福岡，2012年9月. 2. 川口慎介，地震生命圏の提案，日本地球惑星科学連合2012年大会，幕張，2012年5月. 1. 川口慎介・中村謙太郎・高井研・野口拓郎・折橋裕二・佐野有司・玉木賢策, 中央インド洋海嶺で第3，第4の熱水活動域を発見, 第57回日本地球化学会年会, 熊谷, 2010年9月.

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