Evaluation of megafans in relation to definition of alluvial fans
| Project/Area Number |
19500879
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Geography
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| Research Institution | Saitama University |
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Principal Investigator |
SAITO Kyoji Saitama University, 教育学部, 教授 (60170495)
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| Project Period (FY) |
2007 – 2009
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| Project Status |
Completed (Fiscal Year 2009)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2009: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2008: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2007: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | 自然現象観測・予測 / 地形学 / 洪水 / 土砂災害 / 自然災害 / 沖積扇状地 / 巨大扇状地 / 河成扇状地 / 集水域面積 / 扇状地面積 / グランチャコ / ヘネラルバレー / セントラルバレー / 定義 / 勾配 / ボツワナ / オカバンゴ / ネパール:インド |
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| Research Abstract |
The Japanese common knowledge that fluvial fans are alluvial fans was suspected. But I emphasized that fluvial fans are alluvial fans, and the knowledge is recognized by researchers on alluvial fans at the Alluvial Fans 2007 conference in Canada. As far as megafans are concerned, the values of drainage basin areas and fan areas are located on two extended lines of extraordinarily large alluvial fans in General Valley of Costa Rica and in San Joaquin Valley of USA. When the reason of the excess is clarified, it is possible to discriminate between megafans and alluvial fans.
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Report
(4 results)
Research Products
(30 results)
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[Journal Article] GIS analysis of depositional slope change at alluvial-fan toes in Japan and the American Southwest2008
Author(s)
Hashimoto, A., Oguchi, T., Hayakawa, Y., Lin, Z., Saito, K, Wasklewicz, T. A.
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Journal Title
Geomorphology 100
Pages: 120-130
Related Report
Peer Reviewed
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