舟山台风灾害及东部海岛台风降雨量分布特征

对舟山市的台风灾害及其东部海岛台风降雨量的影响因素进行了分析。分析发现,台风的破坏力,主要由伴随的狂风、暴雨和风暴潮等因素引起,历史上对舟山有较严重影响的台风占34.5%。台风降雨量大小与台风路径有很大的关系。台风在浙江中部的台州沿海登陆时,舟山东部海岛的降雨量最大。每年台风雨量占年雨量的1/4~1/3,但不同年份有很大的差别。地形对台风降雨量大小影响也很明显。最大台风降雨量出现在桃花岛。

Typhoon Disasters in Zhoushan and Distibution of Typhoon Rainfall in Eastern Zhoushan Islands

Meteorological factors causing typhoon disasters in Zhoushan Islands and affecting distibution of Typhoon rainfall in Eastern Zhoushan Islands are studied.Results show that the destructive force of the typhoon is mainly associated with strong wind,torrential rain and storm surge.About 34.5% typhoons have severe damage to Zhoushan Islands.The intensity of typhoon rainfall associated with the track of typhoon.When the typhoon landed at Taizhou in the middle of Zhejiang Province,the maximum rainfall accured in the east of Zhoushan Island.Rainfall of typhoon accounted for 1/4 to 1/3 in total annual rainfall,but changing by years.It＇s also evident that the terrain influenced the intensity of the typhoon rainfall,the maximum typhoon rainfall appeared in Peach Blossom Island.