中文摘要：

基于密集流动台阵，联合使用主事件法和 sPL 深度震相，对2011年9月10日瑞昌-阳新MS4．6地震及其余震序列进行重新定位，获得更为准确的震源位置。结果显示：重新定位后主震的水平位置为29．70°N，115．47°E，误差约1 km；震源深度为15 km，误差约2 km。结合地震序列定位结果、主震震源机制解和震区NE向断层发育的构造背景，初步探讨主震可能的发震构造。

英文摘要：

Based on the records of the temporary seismic array and combined master event technique and the sPL phase,we relocate the Ruichang-Yangxin earthquake sequences which occurred in Jiangxi province on 10 September,2011. The relocation results indicate that the epicenter of the main shock is relocated to be 29. 70°N,115. 47°E ,whose error is about 1 km,the focal depth is about 15 km,whose error is about 2 km. Combining the location of the earthquake sequence,the focal mechanism of the main shock and the tectonic condition of NE faults growth in seismic region,we preliminarily discuss probable seismogenic structure of the main shock.