| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2012: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2011: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2010: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Research Abstract |
The reason why alluvial fans in the General Valley in Costa Rica are relatively large is clarified to owe to a mistake on geomorphic measurement by this study that the areas of alluvial fans and drainage basins were measured again and the field observation was done. In consequence, almost all alluvial fans and relatively large megafans can be divided by both regression lines between drainage basin areas and fan areas. Besides, it can be emphasized that fluvial fans are also alluvial fans as the same as debris-flow fans.
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