2013年1月29日中哈交界MS6.1地震震源机制解与发震断层研究

摘要

针对2013年1月29日发生在中哈交界MS6.1地震,基于新疆数字台网中心宽频带波形记录,采用CAP方法反演了其震源机制解。结果显示：该次地震震源深度为27 km,其中一个节面走向161°,倾角76°,滑动角-164°,与哈佛大学计算结果一致；结合余震空间分布和 GPS观测结果,判定该节面为破裂面,同时推断该处有一发震断层,其走向 NWW、倾角较大、断错性质为右旋走滑型。%We adapted CAP method to calculate focal mechanism solution of Kazakhstan earthquake with MS6.1 on Jan 29th,2013 based on broadband digital wave in Xinjiang.The result showed:the focal depth is about 27 km,one nodal plane strike is 161°,dip 76°,rake-164°which were similar to Hanford’s results.According to distribution of aftershocks and GPS data,we found there is a causative fault with NWW direction,with large dip and be-longs to right-lateral strike-slip.