AM05-18-001 ある棚田小流域における2004年台風16号による降雨の流出過程に関する研究(水および土砂災害1,一般講演)

概要

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The runoff process of heavy rain from the drainage area of 0.81ha paddy field in a mountain area of Kumamoto Prefecture has been investigated. It was heavy rain last year due to Typhoon No.16, which return period was 60 years, and the total rainfall was 368.5mm. The runoff rate, the ratio of total runoff to total precipitation, was about 0.5, and the value was not so much different from it under the other small or no precipitation condition. This means that the loss of precipitation should vary correspond to the rainfall characteristics such as rainfall intensity and cumulative rainfall. The loss of precipitation during the heavy rainfall due to Typhoon No.16 is 85mm/d, otherwise 33-40mm/d. This shows that loss of precipitation would become large during heavy rain. It has to be investigated more in detail, and the mechanism should be discussed using some model of the drainage area.
日本流体力学会の論文
2005-09-05