中国大陆内部GPS连续观测站基线分析

摘要

根据中国地壳运动观测网络基准站1999年初至2010年4月的资料,对中国大陆内部80条GPS基线时间序列进行了分析,讨论了这些基线在正常情况下的趋势性运动特征,总结了2001年昆仑山口西Ms8.1和2008年汶川Ms8.0两次大震前GPS基线时间序列的异常变化情况,并在此基础上分析了GPS基线近期变化情况.%Selecting the data from early 1999 to Apr. , 2010 recorded by the continuous observational stations of the project of China Crust Movement Measuring Network, we analyze 80 GPS baselines time series in Chinese mainland. Then we discuss the tendency variation of all these baselines in normal condition and summarize the abnormal changes of GPS baseline time series before 2001, West Kunlun Mountain Pass Ms8. 1 earthquake and 2008, wenchuan, Sichuan Ass8. 0 earthquake. On this basis, we analyze the recent variation of GPS baseline time series.