Relocation of the 12 February 2014 Yutian, Xinjiang, mainshock (Ms7.3) and its aftershock sequence

Using the Bayesian absolute location method, we obtained the Yutian, Xinjiang, earthquake (M(s)7.3) epicenter parameters, 82. 56 degrees E, 36. 04 degrees N, and 12.3 km in depth. We also relocated the 254 aftershocks using the double-difference algorithm, and finally obtained 101 relocated earthquakes. Our results show that the mainshock is located at the junction of several branches of the southwestern Altyn Tagh fault zone. The aftershocks are mainly located at 5 similar to 10 km depth. The fault plane reflected by aftershocks around the mainshock is very steep, and these aftershocks clearly demonstrate a purely unilateral extension in southwest direction. There is a clear event cluster at the Minfeng seismic area in the NE direction of the Altyn Tagh fault zone, which may be triggered by the mainshock.