分量钻孔应变仪记录的汶川、芦山强震前兆应变异常  

Strain Anomalies Before Wenchuan and Lushan Earthquakes Recorded by Component Borehole Strainmeter

作　　者：池顺良[1,2] 

机构地区：[1]中国科学院计算地球动力学重点实验室 [2]中国科学院大学地球科学学院,北京100049

出　　处：《科技导报》2013年第12期27-30,共4页Science & Technology Review

摘　　要：2007年全国布设了由40台4分量钻孔应变仪组成的分量应变监测网络。位于四川姑咱地震台的应变仪先后记录了汶川和芦山强震孕震过程中的潮汐畸变应变异常现象。这些异常变化基本满足地震前兆的3项判据,故被初步认定是这两次强震孕育过程中的应变前兆。本研究对相关记录资料进行了分析,以期为后续强震预测和预报研究提供参考。China Earthquake Administration has installed a strain monitoring network of 40 sets four-component borehole strainmeters. One strainmeter located in Sichuan Guzan seismic station has recorded distinct tidal distortion and strain abnormity during the seismogenic process of Wenchuan and Lushan strong earthquakes. These abnormal changes basically met the three criteria of earthquake precursors, thus they were considered to be strain precursor of the seismogenic process of two strong earthquakes. In this paper, the related record information was analyzed, which would provide reference for the subsequent strong earthquake prediction.

关 键 词：芦山地震 汶川地震 地震预报 钻孔应变 数据自检 地震前兆 

分 类 号：P315.72[天文地球—地震学]