| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2010: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2009: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2008: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Research Abstract |
A method to estimate hydraulic conditions of turbidity currents from grain-size distribution of turbidite sandstones was established. The one-dimensional mixed grain-size model of turbidity currents was used as a forward model for the analysis, and the optimizing calculation of the model for reproducing grain-size distribution measured in the sandstone bed enabled to estimate paleo-hydraulic conditions of turbidity currents with high accuracy. The method developed in this study was applied to a turbidite bed in the Pleistocene Otadai Formation, and the velocity and sediment concentration of the turbidity current was successfully reconstructed.
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