Rapid Analysis of the Impact of the 2023 Jishishan Ms6.2 Earthquake on the Deformation of GNSS Reference Stations
In this paper,we collect 1 Hz high-frequency data from multiple GNSS ground reference stations near the epicenter of the Jishishan earthquake on December 18,2023,and use PRIDE PPP-AR and TRACK software for dynamic PPP calculation and high-precision static data processing.The coseismic deformation displacement fluctuation and permanent deformation displacement of the GNSS reference stations are obtained.Then,we analyze the deformation impact of the earthquake on the GNSS ground reference station at the epicenter.The results show that PRIDE PPP-AR and TRACK software can both calculate the coseismic deformation displacement impact of the earthquake on the reference station.The static calculation results show that the earthquake caused a permanent deformation displacement of about 18 mm in the horizontal direction at LXJS station(5.3 km away from the epicenter),and the impact range of this earthquake on the stability of the GNSS reference station is about 50 km.The rapid deformation analysis method and results can provide reference and data support for disaster prevention and mitigation,as well as real-time navigation and positioning services.
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