Influence Of Ludian Earthquake Based On GAMIT / GLOBK On Geometric Deformation Of Kunming CORS Station

Because of being close to Kunming,Ludianearthquake which occurred on August3rd,2014 in Yunnan province might have impacts on the stability of the Kunming CORS stations. Thispaper calculates the data of six Kunming CORSstations including XIAH station and TANZ stationfrom July 20th,2014 to August 30th,2014, and calculates the data of six IGS stationsincluding BJFS station and LHAZ station, and then analyzes the resolved datas after basiline processing and adjustmentby using GAMIT/GLOBK software to obtain the result that Ludian earthquake has limited impacts on the geometric deformations of the Kunming CORS stations and leads to a slight shift of the Kunming CORS network southwest.The analysis methods in this paper can be applied to changes that other geological conditions cause.Besides,this paper also fouses to discussing the impacts of choices of IGS station for baseline processing precision, and find that if IGS stations are all evenly distributed around GNSS stations, the sesolved datas wili be more precise and ideal.