| Co-Investigator(Kenkyū-buntansha) |
OKINO Kyoko 東京大学, 大気海洋研究所, 准教授 (30313191)
SUNAMURA Michinari 東京大学, 大学院理学系研究科, 助教 (90360867)
ISHIBASHI Jun-ichiro 九州大学, 理学府, 准教授 (20212920)
TAKAI Ken 独立行政法人海洋研究開発機構, 極限環境生物圏研究センター, プログラムディレクター (80359166)
SUZUKI Katsuhiko 独立行政法人海洋研究開発機構, 地球内部変動研究センター, グループリーダー (70251329)
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| Budget Amount *help |
¥195,520,000 (Direct Cost : ¥150,400,000、Indirect Cost : ¥45,120,000)
Fiscal Year 2013 : ¥3,900,000 (Direct Cost : ¥3,000,000、Indirect Cost : ¥900,000)
Fiscal Year 2012 : ¥16,250,000 (Direct Cost : ¥12,500,000、Indirect Cost : ¥3,750,000)
Fiscal Year 2011 : ¥78,130,000 (Direct Cost : ¥60,100,000、Indirect Cost : ¥18,030,000)
Fiscal Year 2010 : ¥82,680,000 (Direct Cost : ¥63,600,000、Indirect Cost : ¥19,080,000)
Fiscal Year 2009 : ¥10,010,000 (Direct Cost : ¥7,700,000、Indirect Cost : ¥2,310,000)
Fiscal Year 2008 : ¥4,550,000 (Direct Cost : ¥3,500,000、Indirect Cost : ¥1,050,000)
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| Research Abstract |
It was estimated that extensive advection systems exist beneath the deep-seafloor which may be responsible for controlling both the ocean chemistry and the subsurface biosphere through interaction with solid earth. In this study, we proposed a hypothesis that such sub-seafloor aquifers can be categorized into four types (four TAIGA hypothesis) based on their chemistry which is controlled by the difference in the geological background. We proved the hypothesis through 33 research cruises which were conducted by multi-disciplinal approach among geophysics, geochemistry, biology, and geology, in combination with related modeling. It is proven that the microbial communities and their characteristic metabolism are controlled and constrained by the chemistry of these four TAIGAs.
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