Investigation of the Macroscopic Anomalies before and after the M8. 0 Wenchuan Earthquake  

作　　者：Zhang Xiaotao Zhang Yongxian Xu Dunhuan 

机构地区：[1]China Earthquake Networks Center, Beijing 100045, China [2]Institute of Earthquake Science, China Earthquake Administration, Beijing 100036, China [3]Centre National de la Recherche Scientifique, Paris 75005, France

出　　处：《Earthquake Research in China》2010年第1期48-69,共22页中国地震研究（英文版）

基　　金：sponsored by the National KeyTechnology R&D Program (2006BAC01B03-04-04)

摘　　要：The macroscopic anomalies before and after the May 12,2008 Wenchuan M8. 0 earthquake were collected and analyzed in this paper. The credible anomalies occurring from February 1 to June 10,2008 were treated as macroscopic anomalies,and their space-time distribution was studied. The research indicates that in time distribution,the number of macroscopic anomalies peaked before the earthquake,and these peak values appeared twice after the earthquake. In space distribution,the distribution of macroscopic anomalies before the earthquake was the same as that after the earthquake. In this paper,the mechanism of occurrence of macroscopic anomalies and the role of macroscopic anomalies in forecasting earthquake were also discussed.The macroscopic anomalies before and after the May 12,2008 Wenchuan M8. 0 earthquake were collected and analyzed in this paper. The credible anomalies occurring from February 1 to June 10,2008 were treated as macroscopic anomalies, and their space-time distribution was studied. The research indicates that in time distribution, the number of macroscopic anomalies peaked before the earthquake, and these peak values appeared twice after the earthquake. In space distribution, the distribution of macroscopic anomalies before the earthquake was the same as that after the earthquake. In this paper, the mechanism of occurrence of macroscopic anomalies and the role of macroscopic anomalies in forecasting earthquake were also discussed.

关 键 词：Wenchuan earthquake Macroscopic anomaly Statistical analysis Space-time distribution 

分 类 号：P315.72[天文地球—地震学] P315.7[天文地球—固体地球物理学]