| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2011: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2010: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Research Abstract |
High velocity friction experiments were performed aimed to verify whether faulting can generate abundant H2 to sustain subsurface chemolithoautotrophic microorganisms, such as methanogens. Our results show that H2 generation increases with frictional work (i.e., earthquake magnitude) and that a H2 concentration of more than few mmol/kg of fluid can be achieved in a fault zone after earthquakes of even small magnitudes. The estimated earthquake-derived H2 concentration is sufficiently high to sustain a H2-based subsurface lithoautotrophic microbial ecosystem.
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