| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2012: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2010: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Research Abstract |
The purpose of this study is to reconstruct the geomorphic environmental in lower part of the Iwakigawa River, by carrying out several type of analyses of delta deposits. The result of this study indicates that Lake Jusan located in the lower part of the Iwakigawa River had been a freshwater lake during 5,300-3,800 cal BP and a lagoonal brackish lake since 900 cal BP. It was revealed that sedimentation rate in the study area in the present is one-tenth than value calculated from sediment based on delta deposits
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