应用GPS研究现今地壳运动的一些新特点  

Some New Characteristics of Research on Contemporary Crustal Movement By Using GPS

作　　者：孟国杰[1] 任金卫[1] 伍吉仓[2] 申旭辉[1] 

机构地区：[1]中国地震局地震预测研究所,北京100036 [2]同济大学,上海200092

出　　处：《国际地震动态》2006年第10期9-16,共8页Recent Developments in World Seismology

基　　金：973项目"断裂带运动方式;应变分配和时空演化过程(2004CB418403)";中国博士后科学基金项目(20040350495)

摘　　要：介绍了第3代GPS卫星的基本特征以及国际全球导航卫星系统(IGS)目前提供的各种星历、卫星时钟和追踪站时钟的精度、地球极移参数、日长及其变化等,同时阐述了国内外GPS地壳形变观测网的最新发展状态,重点介绍了川西地壳形变科研观测网。讨论了GPS瞬时定位方法的特点及其应用,评述了利用GPS观测数据研究慢地震取得的成果及其动态。In this paper, we introduce the basic characteristics of the third generation of GPS satellites, the different ephemeredes, the accuracy of satellite ＆ station clocks, the parameter of polar motion and the variation of the length of day provided publicly by International GNNS service. The recent development of GPS networks in the world, emphasizing on the network in western Sichun province which was financially supported by the 973 project, has been explained. We also discuss the features and applications of instantaneous positioning method and make some comments on the research results of slow earthquakes determined by continuous GPS measurements.

关 键 词：GPS 地壳运动 卫星星历 慢地震 

分 类 号：P315.725[天文地球—地震学]