Abstract: This study used the double-difference earthquake location method combined with waveform cross-correlation technique to relocate the M_S6.2 Jishishan earthquake sequence (As of 24:00 on December 22, 2023) in Gansu Province. The results show that the epicenter of the M_S6.2 Jishishan earthquake is located at Jishishan County, Linxia Prefecture (35.745°N, 102.827°E) and the focal depth is about 12.5 km. The aftershock sequence formed two branches in different directions, which were NW and NNW. The aftershocks near the M_S6.2 Jishishan earthquake are distributed in an NW direction, and tilted toward the NE. The relocation results reveal the complex tectonic environment of the region.

Key words: Jishishan earthquake, Earthquake relocation, Spatial distribution of aftershocks, Seismogenic structure