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。
Using borehole strain observation data collected by Yunnan and Guizhou seismic stations, we analyze anomalies before Yiliang MsS. 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.
出处
《防灾科技学院学报》
2013年第3期50-54,共5页
Journal of Institute of Disaster Prevention
关键词
彝良地震
钻孔应变观测
前兆异常
Yiliang Ms5.7 earthquake
borehole strain observation
seismic station
anomaly
