【摘要】 应用振幅谱反演方法,对2009年3月25日黄海M_L 4.0地震的震源机制进行求解。在震源位置固定情况下,得到此次地震的地震矩为7.17×10¹⁴N·m,矩震级约3.8级,最佳震源机制解为:走向40°,倾角80°,滑动角150°,与震中附近区域的中国断层线走向基本吻合。更多还原

【Abstract】 This paper attempts to find focal mechanism of the Yellow Sea M_L 4.0 earthquake on Mar 25,2009 by amplitude spectrum inversion.In case of fixed depth,it is obtained that the scalar moment of this event is 7.17×10¹⁴N·m,with M_W≈3.8.And the best focal mechanism solution is:strike=40°,dip = 80°,rake=150°.The node plane describe by these angles is consistent with faults tendency near the epicenter.更多还原