Quick output parameters related to the 23 January 2024 MS7.1 Wushi earthquake in the Aksu region of Xinjiang

Abstract

On January 23，2024 at 02:09 (Beijing time), the MS7.1 earthquake occurred in Wushi county, Aksu Prefecture, Xinjiang. The Institute of Geophysics, China Earthquake Administration initiated a rapid response after the earthquake, organized researchers in related fields to estimate the source parameters, seismic radiation energy, and repositioned the aftershock sequence. At the same time, seismic map simulation and co-seismic deformation field simulation were carried out based on the source model. The results indicate that the earthquake occurred within the Tianshan Mountains, mainly through a thrust mechanism, with energy concentrated and released within the first 25 seconds; The seismic intensity in the extreme earthquake zone may reach over Ⅸ degrees, with a possible disaster area of nearly 65000 km2; This earthquake caused significant coseismic displacement, with a maximum horizontal displacement of 21 cm and a vertical displacement of 38 cm.

Keywords

• the wushi earthquake
• source parameters
• earthquake relocation
• shakemap prediction
• earthquake radiation energy
• coseismic deformation