【摘要】 基于区域数字地震台网记录,利用CAP方法反演得到了2011年2月23日迭部MS4.0级地震的震源机制解和震源深度,然后利用深度震相sPg和参考震相Pg对震源深度进行了详细的分析。结果表明,迭部4.0级地震的最佳双力偶解为节面Ⅰ,走向110°、倾角57°、滑动角23°,表现为带少量逆冲分量的走滑型地震,震源深度为7 km。通过合作台上理论地震图与实际观测记录的比较,确认了震源深度结果的可靠性。更多还原

【Abstract】 Based on the records of regional seismic networks,we obtained the focal mechanism and focal depth of Diebu MS 4.0 earthquake on Feb 23,2011,with the "Cut and Paste"(CAP) method.Then using depth phase sPg and reference phase Pg,we analyzed the focal depth in detail.The results show that the best double solution for this Diebu earthquake is 110°,57° and 23° for strike,dip and slip angles respectively,which belongs to the strike-slip type with a little thrust weight and is 7 km in focal depth.Through comparing the theoretical and the observed seismograms of HZT station,we confirm the reliability of the focal depth.更多还原