强地震影响年降水量的统计分析

A STATISTICAL ANALYSIS OF ANNUAL PRECIPITATION EFFECTED BY DESTRUCTIVE EARTHQUAKE

摘要:

分析我国大陆1951-1988年的7级以上地震及降水资料发现,从上年10月至当年8月之间发生的7级以上强震会使本地区当年的降水增多,且在震中附近有正降水距平中心。本文还分析了“地震群”与降水的关系,发现绝大部分“群震区”当年是多雨区。最后从地热通量的变化,初步分析了地震引起降水偏多的可能原因。

Abstract:

After analysing the data of annual precipitation and the destruc tive earthquakes (M≥7.0) in mainland of China during 1951-1988, the following conclusion is obtained. When the earthquake(M≥7.0) occurred during last year October to next August, the seismic center area will be wet (more precipitation)in this year and appeared as drought last year. So the order of three biggest disasters is as "drought——earthquake——flood". The relation between the seismic swarm and precipitation is also analysed. Finally, from the variation of the geothermal flux, the possible causes of more precipitation caused by earthquake are preliminarily analysed.