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雲仙岳に火山性土石流を発生させた1993年6月18日の雷雲の降雨特性


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Title: 雲仙岳に火山性土石流を発生させた1993年6月18日の雷雲の降雨特性
Other Titles: Characteristic Features of The Thunderstorm over Mt. Unzen on 18 June 1993 Which Caused a Volcanic Debris Flow
Authors: 荒生, 公雄 / 住吉, 千秋 / 武田, 喬男 / 藤吉, 康志 / 岩崎, 博之
Authors (alternative): Arao, Kimio / Sumiyoshi, Chiaki / Takeda, Takao / Fujiyoshi, Yasushi / Iwasaki, Hiroyuki
Issue Date: 31-May-1994
Publisher: 長崎大学教育学部
Citation: 長崎大学教育学部自然科学研究報告. vol.51, p.23-35; 1994
Abstract: An intensive thunderstorm occurred on 18 June 1993 over Unzen-Shimabara region, which caused a very sever debris flow, was studied by the observation of RHI radar from the viewpoint of the evolution of thunderclounds and the prevention of disaster. The main results of this study are as in the following. (1) The thunderstorm which was in active for six hours consisted of six giant rain cells. Each giant cell also consisted of several sub-cells and supplied the rainfall of about 50mm per hour and 20mm per 10 minute at the mature stage. (2) All the giant cells moved form WSW to ENE with a velocity of 60~70km/h. This direction and speed agreed with the conditions of upper atmosphere. (3) Both the one-hour precipitation and the total amount of rainfall were largest at the east coast of Shimabara Peninsula, because the rain cells originated at the western searegion at a distance of 30~40km from the west coast and developed during their travels to the east.
URI: http://hdl.handle.net/10069/32201
ISSN: 0386443X
Type: Departmental Bulletin Paper
Text Version: publisher
Appears in Collections:No. 51

Citable URI : http://hdl.handle.net/10069/32201

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