Determination of rupture parameters for fusong ml5.0 earthquake

In this paper,the azimuths of rupture propagation directions and source parameters of the ML5.0 earthquakes in Fusong are obtained utilizing the direction change of corner frequency and the least square method according to the earthquake Doppler effect.The results show that the azimuth angle of rupture propagation directions is about 226°,consistent with the WS nodal plane of focal mechanism and aftershock distribution and the fault directions in the epicenters.The seismic Mach number is about 0.62 and the rupture lengths are about 2.82 kilometers.The rupture propagate along the direction from NE to SW.