摘要
根据地震波传播过程中的多普勒效应,利用拐角频率的方向变化,用最小二乘法反演了2005年寿县ML4.1级、2006定远ML4.7级地震的发震断层参数。结果表明,反演得到的中等地震的发震断层参数与震中附近实际断层的参数基本一致,破裂速度均小于S波的速度,且破裂长度为0.2～0.3km。
In this paper, the azimuths of rupture propagation directions and source of two medium earthquakes in Anhui are obtained utilizing the direction change parameters of comer frequency and the least square method according to the earthquake Doppler effect. The results show that the azimuths of rupture propagation directions and source parameters keep the same with the fault directions in the epicenters of medium earthquakes in Anhui. The rupture velocities are all smaller than the S-wave velocity and the rupture lengths are about 0.2-0.3 kilometers.
出处
《华南地震》
2008年第3期89-94,共6页
South China Journal of Seismology
基金
安徽省地震科研基金200605资助
