利用GPS资料研究印尼8．7级地震对我国西部地震趋势的影响

Research on Influence of Indonesia MS8.7 Earthquake to Western China Using GPS Data

摘要:

利用我国西部20世纪90年代以来不同来源的GPS观测资料,结合地质构造和地震活动分析了区域现今地壳水平运动变形背景及其与地震活动的关系;根据印尼8.7级地震后川滇地区2005年1月GPS应急观测结果研究了本区水平运动变形对印尼大震的远场响应特征;初步分析探讨了印尼8.7级地震对我国西部地震活动趋势的影响.

Abstract:

Using the vary original GPS observation data since 19905 in western China, combining with the geological structure and recently earthquakes （Ms ≥ 6.0 ） in the same area, the relationship between the background of regional nowadays horizontal crust movement and deformation which are revealed by GPS observation and strong earthquake activity are analyzed. Moreover depending on the emergency GPS observation results in Sichuan-Yunnan area in Jun. 2005 after Indonesia Ms 8.7 earthquake, the horizontal movement and deformation characteristic in this area as the far off field response to Indonesia Ms 8.7 earthquake are researched. In this foundation, the infection of Indonesia Ms 8.7 earthquake to earthquake activity tendency in western China are analyzed and discussed.