地学雑誌
Online ISSN : 1884-0884
Print ISSN : 0022-135X
ISSN-L : 0022-135X
論説
なつしまNT-06-19航海(直江津沖海鷹海脚および上越海丘)によって採取された堆積物柱状試料の有機地球化学分析
荻原 成騎石崎 理松本 良
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ジャーナル フリー

2009 年 118 巻 1 号 p. 128-135

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 The Umitaka spur and the Joetsu knoll in the eastern margin of the Japan Sea off Naoetsu are characterized by a high methane flux accompanied by the formation of methane hydrates. Several sediment cores were obtained from this region during the “Natsushima” NT-06-19 cruise. Various geochemistry analyses were carried out on these samples. ANME-1 and ANME-2 groups of archaea were distinguished by biomarkers. ANME-1 was found from the sediment sample covered by a bacterial mat with the maximum concentration of dissolved methane in pore water. The samples in which ANME was detected are characterized by a remarkably high sulphur content.

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© 2009 公益社団法人 東京地学協会
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