Multi-scale wavelet separation of aeromag-netic anomaly and study of faults in Beijing area  

作　　者：张先 赵丽 刘天佑 杨宇山 

机构地区：[1]Geophysical Exploration Center,China Earthquake Administration [2]Institute of Geophysics and Geomagnetics,China University of Geosciences

出　　处：《Acta Seismologica Sinica(English Edition)》2006年第5期542-551,共10页

基　　金：National Development and Reform Commission Project ″Experimental Detection of Urban Active Faults″ (2004-1138).

摘　　要：In this paper, through a multi-scale separation of the aeromagnetic anomaly by wavelet transform technique, we reprocessed the aeromagnetic data collected 20 years ago in Beijing area and analyzed the aeromagnetic anomaly qualitatively, integrating geological structure features in the area. In particular, we studied the spatial distributions of the two main faults called Shunyi-Liangxiang fault and Banqiao-Babaoshan-Tongxian fault, which have cut and gone through the central Beijing area striking in NE and EW directions, respectively. The influences of these two faults on the earthquakes have also been discussed briefly.In this paper, through a multi-scale separation of the aeromagnetic anomaly by wavelet transform technique, we reprocessed the aeromagnetic data collected 20 years ago in Beijing area and analyzed the aeromagnetic anomaly qualitatively, integrating geological structure features in the area. In particular, we studied the spatial distributions of the two main faults called Shunyi-Liangxiang fault and Banqiao-Babaoshan-Tongxian fault, which have cut and gone through the central Beijing area striking in NE and EW directions, respectively. The influences of these two faults on the earthquakes have also been discussed briefly.

关 键 词：Beijing area aeromagnetic anomaly multi-scale separation fault analysis 

分 类 号：P315.721[天文地球—地震学]