【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。更多还原

【Abstract】 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.更多还原