北京地区航磁异常的多尺度分解及断裂研究

MULTI-SCALE WAVELET SEPARATION OF AERO- MAGNETIC ANOMALY AND STUDY OF FAULTS IN BEIJING AREA

在对北京地区航磁异常及地质构造特征进行定性分析的基础上,对北京地区航磁异常运用小波多尺度分解方法进行了数据处理,并对北京市区的两条主要断裂,即北东向的顺义—良乡断裂和东西向的板桥—八宝山—通县断裂的空间分布及其对地震的影响进行了重点探讨和分析.

In this paper, through a multi-scale separation of the aeromagnetic anomaly by using the wavelet transform technique, we reprocessed the aeromagnetic data in Beijing area and analyzed the aeromagnetic anomaly qualitatively, combined with the geological structure features in the area. In particular, we studied the spatial distributions of the two main faults called Shunyi-Liangxiang fault and Babqiao-Babaoshan-Tongxian fault which cross through the central Beijing area stricken in the NE and EW directions, respectively. The influenas of these two faults on earthquakes have also been discussed in this paper briefly.