| Budget Amount *help |
¥204,360,000 (Direct Cost: ¥157,200,000、Indirect Cost: ¥47,160,000)
Fiscal Year 2013: ¥13,260,000 (Direct Cost: ¥10,200,000、Indirect Cost: ¥3,060,000)
Fiscal Year 2012: ¥47,190,000 (Direct Cost: ¥36,300,000、Indirect Cost: ¥10,890,000)
Fiscal Year 2011: ¥42,120,000 (Direct Cost: ¥32,400,000、Indirect Cost: ¥9,720,000)
Fiscal Year 2010: ¥51,740,000 (Direct Cost: ¥39,800,000、Indirect Cost: ¥11,940,000)
Fiscal Year 2009: ¥50,050,000 (Direct Cost: ¥38,500,000、Indirect Cost: ¥11,550,000)
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| Research Abstract |
Various experiments were conducted in order to assess insitu state and property of the seismogenic processes of subduction zone earthquakes. At Nankai Trough, insitu stresses were estimated through core measurements, resistivity-image logging, hydro-fracturing, vertical seismic profiling, etc., all of which show maximum horizontal compression parallel to the plate conversion. Borehole observatory data suggest that the temperature at the mega-splay fault at 5000 m below sea floor is 130-150 degC.
At Japan Trtench, stress drop in the shallow portion was detected after the 3.11 Tohoku event. Insitu temperature monitoring at the fault zone revealed only +0.3degC increase, suggesting a very low friction (<0.1) during the fault slip. These are consistent with a large slip inferred along the shallow fault zone.
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