【摘要】 在一维有限移动震源模式下,根据地震波传播过程中的多普勒效应利用S波或P波拐角频率的方向性来确定地震破裂面的方法,计算了2003年11月~2005年10月阳江地区13次ML≥2.5地震的发震断层走向,结果显示:利用S波、P波拐角频率得到的2004年9月阳江4.9级地震破裂方位角分别为167°和166°,地震序列以NNW为主要破裂方向。更多还原

【Abstract】 In the basis of Doppler effect in the process of seismic wave’s propagation, the corner frequency of wave P or S can be used to determine the rupture plane under 1D finite moving source model.The rupture azimuthes for M_L≥2.5 Yangjiang earthquakes occurred from November 2003 to October 2005 are calculated with this method.The results show that the azimuth of the fault plane for M4.9 Yangjiang earthquake is about 167°and 166°respectively from the corner frequnce of wave P or S,and the main rupture direction is NNW.更多还原