我国GPS跟踪站在汶川地震前后的运动特征分析

Analysis of Movement Character before and after Wenchuan Earthquake for GPS Reference Stations in China

利用国家测绘局及其它部委布设的GPS跟踪站连续10年的观测数据,通过数据处理和分析得到了汶川地震前这些站的运动速度场和震后位移量,同时获得了各站近10年的坐标时间序列,在此基础上初步分析了地震前、后各站时间序列表现出的站点的运动特征信息。为我国地心坐标框架的进一步更新和维护提供了重要数据,也为地球动力学研究提供了重要的基础信息。

Based on the continuous 10 years observation data of domestic GPS Reference Stations provided by State Bureau of Surveying and Mapping （SBSM） and other ministries, we get the velocity before the Wenchuan earthquake and displacement after Wenchuan earthquake from the processing and analysis of domestic GPS Reference Stations, further more we obtain the time series spanned from March 1st, 1999 to June 5st 2008. This article focuses on analysis of coordinate variety information of GPS Reference station before and after Wenchuan earthquake, in this foundation, we can update and maintain domestic geocentric coordinate framework and provide the important informations for Geodynamics Research.