トカラ列島近海の海底熱水に含まれる揮発性成分の地球化学的研究

WEN HSINYI; Naoto Takahata; Akizumi Ishida; Kentaro Tanaka; Yama Tomonaga; Takanori Kagoshima; Kotaro Shirai; Jun-Ichiro Ishibashi; Hisayoshi Yokose; Urumu Tsunogai; Yuji Sano

doi:10.14862/geochemproc.61.0_52

Abstracts of Annual Meeting of the Geochemical Society of Japan

Session ID : 1D12

DOI https://doi.org/10.14862/geochemproc.61.0_52

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Host: Abstracts of Annual Meeting of the Geochemical Society of Japan

The gas geochemistry characteristics in the hydrothermal plumes near Tokara Islands

*WEN HSINYI, Naoto Takahata, Akizumi Ishida, Kentaro Tanaka, Yama Tomonaga, Takanori Kagoshima, Kotaro Shirai, Jun-Ichiro Ishibashi, Hisayoshi Yokose, Urumu Tsunogai, Yuji Sano

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Keywords: helium, methane, hydrothermal plume, Tokara Islands

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Abstract

There was a new finding submarine volcano near the Tokara Islands by a multibeam echo sounder survey, but still less geochemistry data. Therefore, the aim of this study is to get information of gas geochemical characteristics at hydrothermal vent sites in the adjacent region of Tokara Islands, South of Kyushu, Japan by using helium isotopes and methane concentration and its stable carbon isotope ratio to estimate the 3He flux and understand the mechanism of carbon cycling.

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