Current fault movement characteristics in the Lijiang-Xiaojinhe fault zone

We studied on the current movements and deformation of Lijiang-Xiaojinhe fault using GPS observations. The results of GPS velocity profile show that the crustal deformation is discontinuous across the fault zone. And based on DEFNODE dislocation model, the distribution of locking factor of Lijiang-Xiaojinhe fault zone were calculated, and the results show that the northeastern segment is locked from ground surface to 15 km underground while the southwestern segment locked from 5 km to 15 km underground with area upon 5 km is weak locked. Combing with the results of GPS velocity profiles, we induced that it may behave as shallow creep in the southwestern segment of Lijiang-Xiaojinhe fault zone. Furthermore, the difference of slip deficit rate between two locking area is about 4 mm.a(-1), which indicate that the slip rate of the southwestern section of the Lijiang-Xiaojinhe fault zone is significantly higher than that of the northern section. Finally, we discussed the influence of the creep segment by calculating the Coulomb stress changes on other faults, which showed positive influence on the two locked areas.