2013 Fiscal Year Final Research Report
Study of stream channel sediment dynamics affected by repeated rainstorm events
| Project/Area Number |
22510197
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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 |
Natural disaster science
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| Research Institution | University of Miyazaki |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
MAEDA Sachie 宮崎大学, 農学研究科, 大学院修士課程
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| Project Period (FY) |
2010-04-01 – 2014-03-31
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| Keywords | 豪雨 / 土砂流出 / 河床変動 / 粗粒化 / 縦横断測量 / 滞留土砂 |
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| Research Abstract |
In recent years heavy rainstorms have remarkably increased. This causes that rain storm events recur at a site at a short time interval. Thus it is necessary to study the influences of repeated rainstorm events on sediment transport in mountain catchments. This study performed a monitoring program of cross-sectional changes of stream channels during 11 years which included two rainstorm events, and describes a series of sediment transport processes in and after the event. This study obtained an inactivating process of post-event sediment transport and its controlling factors.
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