1987年1月秋田県北部沿岸の竜巻災害

概要

論文の詳細を見る
The northern coast in Akita Prefecture suffered severe disaster caused by tornadoes on January 11,1987. This paper deals with the outline of meteorological conditions and damages in relation to the tornadoes. The following main results were obtained : 1) According to the synoptic situation associated with its occurrence, the tornadoes can be assumed the cold air tornado related to an upper cold voltex. 2) From the feature of tornado damage path, it seems that the cumulonimbus system with respect to a mesocyclone produced six tornadoes, one after another. 3) The each damaged area seems to be one straight narrow belt. The length of the each damaged area is about 300-700 m and the width is at most 50-100 m, and the narrow belts turn to the southeast or east-southeast. 4) The zinc roofs and window glasses are destroyed and the many simply constructed storehouses for farmers are also destroyed. The damage to the power transmission line is serious, though the damage occurred before daybreak.
日本自然災害学会の論文
1987-06-30