福清、泉州综合场地GPS和水准联合分析

Joint Analysis of GPS and Leveling Data of Fault Zones in Fuqing and Quanzhou

联合福建省近几年福清、泉州综合场地GPS观测数据和水准复测数据,分析了两个跨断层综合场地的三维运动特征。结果显示:16个综合场地GPS测站相对华南块体的无整体旋转速率约为5mm/a,方向为北东向和北西向。长乐-诏安断裂带的三组次级断裂均存在走滑运动,长乐-诏安断裂带以压性活动为主,且福建地区地块形变具有南强北弱的特征。

High precision GPS and leveling data of recent years are used to estimate 3D velocities of fault zones in Fuqing and Quanzhou of Fujian area.The results are as follows：Velocities of 16 GPS stations in Fuqing and Quanzhou exhibit northeastward or northwestward movement,and the value is are about 5mm/a relative to the NNR on crustal motion of Southern China block.The three secondary faults of Changle-Zhaoan fault show slip motion and compressive activities,and the activity of north segment is weaker than that of the south segment in Fujian area.