【摘要】 使用滇黔地区钻孔应变观测台站的资料,对2012年9月7日彝良M S5.7地震前异常现象进行分析,结果表明,震前昭通、贵阳台钻孔应变出现长趋势等异常,其他台站在震前几小时到5天出现曲线异常波动、固体潮变形等异常现象。更多还原

【Abstract】 Using borehole strain observation data collected by Yunnan and Guizhou seismic stations,we analyze anomalies before Yiliang MS5.7 earthquake on September 7,2012.The result shows that before the earthquake,anomalies appeared in the long trends of borehole strain observed by Zhaotong and Guiyang Stations;a few hours to five days before the earthquake,curve anomaly and earth tide anomaly appeared in other stations.更多还原