著者

岩松 暉

出版者

日本自然災害学会

雑誌

自然災害科学 (ISSN:02866021)

巻号頁・発行日

vol.16, no.2, pp.107-111, 1997-08-30

被引用文献数

3

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Severe debris flow disaster occurred along the Harihara River, Izumi City, Kagoshima Prefecture at midnight of June 10,1997. 21 persons were killed and 18 houses were destroyed by the debris flow. Pleistocene volcanic breccias are widely distributed in the vicinity of the Harihara district. Matrices of these rocks have been greatly altered to very soft clay by superficial weathering. And thick slope sediments which consist of talus deposits with huge boulders and core stones of onion structure crop out in the landslide area. Collapsed slope sediments rushed into farm pond beneath the slope, and water-saturated debris changed into debris flow.