福建GPS台网观测位移时间序列特征的初步研究

使用福建GPS台网2004年3月至2006年10月的连续观测资料,对已作卡尔曼滤波后的时间序列观测值进行了初步分析。经数据处理估算各测站的运动速率,对连续观测结果综合分析获得位移,选取区域相对水平位移变化量较小的5个台站组成的一组稳定点作为基准;讨论了各测点连续时间序列与测站运动速率变化特征,除出现一次较明显的分量位移异常变化(可能与台湾强震活动有关)外,没有明显的水平位移异常现象。表明现今福建地壳运动趋势仍十分缓慢且整体较为平稳,是随同中国大陆地块较均匀地向东南方向运动。

A Preliminary Study on the Characteristic of Displacement Time Sequence of the GPS Network in Fujian Province

The continuous observation data from March,2004 to October,2006 recorded by the GPS network in Fujian province were analyzed by using Kalman filtering method.After processing the data,the moving velocity at various stations was estimated,based on choosing five stations at which the horizontal displacement was small as the datum stations.By analyzing the continuous observation results,the displacement was obtained.The results show that the crust movement trend in Fujian is very slow and even,and the movement direction is south-east as same as that of China continental plate.