贵州威宁M4．7级地震特征初析

摘要

The M 4.7 earthquake occurred in Weining County of Guizhou Province on March 22, 2009. Based on the analysis of the seismogeological background, basic parameters of the earthquake and features of the seismic sequence; this article points out that the earthquake sequence is mainly a foreshock-mainshock-aftershock type.Strength of small-scaled earthquakes indicates that medium-strong earthquakes will occur in Weining County in the near future.%2009年3月22日，在贵州省威宁县哈喇河乡与双龙乡一带发生了M4．7级地震，本文从地质构造背景、地震基本参数、地震序列特征等方面对这次地震进行了初步分析。得出这次地震为前震一主震一余震型，同时威宁地区3级地震持续活动对该区中强地震的短临预报具有一定的指示意义。