昭和58年7月豪雨による島根西部の水害とその考察

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  • A Consideration of Flood Disaster in West Shimane Caused by Local Heavy Rainfall in July, 1983

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The west part of San'in District suffered severe disasters from slope failure and flood flows caused by record heavy rainfall, in July 23,1983. At the Hamada meteorological observatory, for instance, the maximum one-day and one-hour rainfalls were 331.5mm and 91.0mm, respectively. After delivering the outline of the meteorological conditions and damages, this paper discusses the runoff process and flood magnitude in representative mountain rivers such as the Rivers Hamada, Sufu, Misumi and Masuda applying the kinematic runoff model, and shows that flood peaks are almost near to maximum experienced values.

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