Preliminary Study on the Relationship between the M_s8.0 Wenchuan Earthquake of 2008 and the Anomalies of Earth Resistivity Observed at Qingdao Seismic Station  

作　　者：Zhang Jihong Zhao Guoze Wang Jinsheng Tang Tingmei Qi Lijie 

机构地区：[1]Earthquake Administration of Shandong Province, Jinan 250014, China [2]Institute of Geology, China Earthquake Administration, Beijing 100029, China [3]Navy Submarine College, Qingdao 266071, China [4]Earthquake Administration of Qingdao City, Qingdao 266034, China

出　　处：《Earthquake Research in China》2011年第2期158-165,共8页中国地震研究（英文版）

基　　金：supported by Natural Science Fondation of Shandong Province(ZR2010DM008);National Natural Science Foundation(40534023, 41074047),China

摘　　要：Near-surface earth resistivity and underground water level anomalies were recorded at Qingdao seismic observatory of Shandong Province before and after the MS8.0 Wenchuan Earthquake of May 12,2008.The observed data of earth resistivity at the observatory revealed that the underground water level dropped and the resistivity increased.It is postulated that in the special tectonic setting at Qingdao observatory,the variation of stress and strain caused the change of water level beneath the station,thus,leading to the variation of earth resistivity.The relationship between the variation of stress field and the change of earth resistivity before earthquake is analyzed.Near-surface earth resistivity and underground water level anomalies were recorded at Qingdao seismic observatory of Shandong Province before and after the Ms8. 0 Wenchuan Earthquake of May 12, 2008. The observed data of earth resistivity at the observatory revealed that the underground water level dropped and the resistivity increased. It is postulated that in the special tectonic setting at Qingdao observatory, the variation of stress and strain caused the change of water level beneath the station, thus, leading to the variation of earth resistivity. The relationship between the variation of stress field and the change of earth resistivity before earthquake is analyzed.

关 键 词：Wenchuan Ms8. 0 Earthquake Earth resistivity Underground water level Stress field 

分 类 号：P315.7[天文地球—地震学] P315.61[天文地球—固体地球物理学]