福建及邻区现今地壳运动与形变  

PRESENT-DAY CRUSTAL MOVEMENT AND DEFORMATION IN FUJIAN PROVENCE AND ADJACENT AREA

作　　者：史粦华[1] 

机构地区：[1]福建省地震局,福州350003

出　　处：《大地测量与地球动力学》2005年第3期69-74,共6页Journal of Geodesy and Geodynamics

摘　　要：统一处理了福建GPS网1995～2003年期间5期的观测资料,采用两个平差方案获得了两组站速度结果,两组结果具有很好的一致性.结果显示:福建沿海地区相对于欧亚板块具有一致的SE向运动,运动方向与该地区NW向断裂带走向和主压应力方向一致;在长乐-诏安和政和-海丰两条断裂带南北两段形变速率较大,在闭锁的中段形变速率很小;长乐-诏安断裂带呈右旋活动状态,沙县-莆田-南日岛断裂呈左旋活动状态.We have uniformly processed 5 periods of observed data （1995-2003） from Fujian GPS network. Two sets of site velocities are obtained by two adjustment schemes and both sets are well consistent with each other. Fujian coastal area exhibits consistent southeastward movement relative to the Eurasia Plate and the motion direction is consistent with the NW-trending fault zones and the principal compressive stress in this area. The deformation velocities in the southern and northern segments of both Changle-Zhao＇an and Zhenghe-Haifeng fault zones are larger and that in the middle section that is locked is smaller. The Changle-Zhao＇an fault zone exhibits a right-lateral activity, while the Shaxian-Putian-Nanri Island fault zone displays a left-lateral activity.

关 键 词：福建沿海地区 形变速率 地壳运动 邻区 活动状态 断裂带 观测资料 GPS网 统一处理 

分 类 号：P315.2[天文地球—地震学] P542[天文地球—固体地球物理学]