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雲仙・普賢岳の土石流堆積物の水無川河口海域における分布(その 2) 1997 年 11 月-2000 年 10 月


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Title: 雲仙・普賢岳の土石流堆積物の水無川河口海域における分布(その 2) 1997 年 11 月-2000 年 10 月
Other Titles: Distribution of Debris Flow Deposits from Unzen Volcano on the River Mouth Area of Mizunashi River, Part 2,November, 1997-October, 2000
Authors: 近藤, 寛 / 東, 幹夫 / 西ノ首, 英之 / 山口, 恭弘
Authors (alternative): Kondo, Hiroshi / Azuma, Mikio / Nishinokubi, Hideyuki / Yamaguchi, Yasuhiro
Issue Date: 27-Mar-2002
Citation: 長崎大学教育学部紀要. 自然科学. vol.66, p.23-34; 2002
Abstract: Marine sediment samples were dredged on the river mouth area of the Mizunasi River from November 1997 to October 2000. We analyzed the grain size and contents of calcium carbonate of these sediments. Volcanic ash of the debris flows by the eruption of Unzen Volcano were observed in some samples. The debris flow sediments were characterized by the mud that median diameter Mdφ was larger than 4. Before the influx of the debris flow, fine grained sand were distributed on river mouth area of the Mizunashi River. These mud by the debris flow are low calcium carbonate less than 10%. On October 2000,the area of mud are 1.09(km)^2 and the debris flow sediments still remained on the river mouth area of the Mizunashi River.
URI: http://hdl.handle.net/10069/6105
ISSN: 13451359
Type: Departmental Bulletin Paper
Appears in Collections:No. 66

Citable URI : http://hdl.handle.net/10069/6105

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