2023年甘肃积石山M_(S)6.2地震对GNSS基准站形变影响快速分析  

Rapid Analysis of the Impact of the 2023 Jishishan M_(S)6.2 Earthquake on the Deformation of GNSS Reference Stations

作　　者：王海涛 张庆涛 王孝青[2] 李阳 王立阳 赵利江 黄功文 WANG Haitao;ZHANG Qingtao;WANG Xiaoqing;LI Yang;WNAG Liyang;ZHAO Lijiang;HANG Gongwen(Geodetic Data Processing Centre,MNR,334 East-Youyi Road,Xi’an 710054,China;National Geomatics Center of China,28 West-Lianhuachi Road,Beijing 100830,China;Surveying and Mapping Engineering Institute of Gansu Province,66 Tanjianzi Road,Lanzhou 730050,China;Qinghai Institute of Basic Surveying and Mapping,13 Huanghe Road,Xining 810001,China)

机构地区：[1]自然资源部大地测量数据处理中心,西安市710054 [2]国家基础地理信息中心,北京市100830 [3]甘肃省测绘工程院,兰州市730050 [4]青海省基础测绘院,西宁市810001

出　　处：《大地测量与地球动力学》2025年第1期5-12,共8页Journal of Geodesy and Geodynamics

基　　金：西安市科技计划(24ZDCYJSGG0015);陕西省重点研发计划(2022ZDLSF07-12);陕西测绘地理信息局科技创新项目(SCK2023-03)。

摘　　要：收集2023-12-18积石山地震震中附近多座GNSS地面基准站地震前后1 Hz高频数据,采用PRIDE PPP-AR、TRACK软件进行动态PPP解算和高精度静态数据处理,得到GNSS基准站的同震形变位移波动和永久形变位移,分析地震对震中GNSS地面基准站造成的形变影响。结果表明,PRIDE PPP-AR和TRACK软件均可计算地震对基准站造成的同震形变位移影响。静态解算结果显示,此次地震造成LXJS站(距震中5.3 km)在水平方向产生约18 mm的永久形变位移,对GNSS基准站稳定性的影响范围约50 km。该快速形变分析方法和结果可为防灾减灾和实时导航定位服务提供参考和数据支撑。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.

关 键 词：GNSS 基准站 地震 形变位移 PRIDE PPP-AR 

分 类 号：P315[天文地球—地震学]