| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2010: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2009: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Research Abstract |
Studies of several sedimentary successions revealed that records of supercritical flow sedimentation are well preserved in flash flood deposits. The form of internal stratification of supercritical flow deposits shows wide variability, especially in its amplitude/wave length ratio. This variability in stratification is attributed to the morphological differences in antidune bedforms. The flume experiments show the amplitude/wave length ratio of antidunes is dependent with flow depths; shallower the flow depth, higher the amplitude/wave length ratio. Comparison of forms of internal stratification of in-channel flood deposits and sheet flood deposits in the Neogene Kunimi Formation revealed that the values of amplitude/wave length ratio of anidunes in the latter are consistently larger than the values in the former. This result is compatible with the results of the flume experiments.
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