CAJ | 학술논문

利用2014年智利Mw8.2级地震前后各3d的震中周边40个IGS站的连续观测数据和IGS精密星历，计算获得远场同震地表位移，结果显示，智利地震同震水平位移影响范围达1500 km～2000 km；经过对其中2个IGS站的高频观测数据进行解算，获得地震发生瞬时测站动态运动轨迹，在此基础上，使用S变换，过滤背景噪声，有效拾取P波初至时刻，反演出P波在地壳中的传播速度，并与IRIS提供的参考值进行对比和分析，说明结果的可靠性。
이용2014년지리Mw8.2급지진전후각3d적진중주변40개IGS참적련속관측수거화IGS정밀성력，계산획득원장동진지표위이，결과현시，지리지진동진수평위이영향범위체1500 km～2000 km；경과대기중2개IGS참적고빈관측수거진행해산，획득지진발생순시측참동태운동궤적，재차기출상，사용S변환，과려배경조성，유효습취P파초지시각，반연출P파재지각중적전파속도，병여IRIS제공적삼고치진행대비화분석，설명결과적가고성。
Based on IGS precise ephemeris and 3-day IGS observations before and after the great Mw 8.2 Chile earthquake ,we presented the coseismic deformation field composed of 40 sites for Indonesia and surrounding area .The results show that the scope of co-seismic horizontal displacement up to 1500-2000 km;we solved high-frequency obser-vations of 2 IGS stations to obtain the dynamic trajectory ,furthermore ,we used the S-transform algorithm for background noise Filtering and the primary wave (P-wave) arrival picking from high-rate GPS seismic waves,inversed the P-wave propagation velocity in the earth's crust,we compared and analyzed it with reference values provided by IRIS (Incorporat-ed Research Institutions for Seismology ) to illustrate the reliability of the result .The results of research could be used for GNSS data monitoring and forecasting on future as a reference .