2018年12月16日兴文5.7级地震序列定位

Precise Relocation of Aftershock Sequence of Xingwen M5.7 Earthquakes on December 16,2018

利用“多阶段定位”法对2018年12月16日四川省宜宾市兴文县发生的M5.7地震序列进行定位,结果显示,序列不是由简单的一次性破裂形成,发震构造较为复杂;深度统计结果表明,这是一次发生于上地壳浅层的破裂事件。

The aftershock sequence of Xingwen M 5.7 Earthquakes on December 16,2018 was relocated by multi-step location method.The results show that the sequence is not just formed by a simple one-off rupture,but may be mixed with additional excitation factors, indicating the complex seismogenic structure.Depth analysis shows that this is a rupture event in the upper crust.