GPS测量揭示的福建沿海地区的现今地形变  

CRUSTAL DEFORMATION ALONG COAST OF FUJIAN REVEALED BY GPS

作　　者：郭逢英[1] 史粦华[1] 丁学仁[1] 林继华[1] 刘序俨[1] 黄声明[1] 黄立人[2] 马青[2] 

机构地区：[1]福建省地震局,福州350001 [2]中国地震局第一地形变监测中心,天津300180

出　　处：《大地测量与地球动力学》2003年第3期87-92,共6页Journal of Geodesy and Geodynamics

基　　金：福建省计委"九五"科技攻关项目 ;福建省地震局 10 5 -0 4A课题 ;国家重大科学工程"中国地壳运动观测网络"项目

摘　　要：根据福建GPS监测网 3期 (1997,1999,2 0 0 1)观测资料的计算结果 ,分析了福建沿海地区的现今地形变特征。(1)福建地区有两个剪应变相对集中区 ,北部是湾口、闽清一带 ;南部是泉州、厦门一带。这两个区的剪应变随时间变化有加强的趋势。 (2 )南部剪应变集中区基本处于压应变环境 ,并且主要断裂两侧存在相对较高的剪应变集中区 ,值得关注。In the light of the computed results of measurement data of GPS observation network in 3 periods (1997, 1999, 2001)we have analyzed the current deformation characteristics along the coast of Fujian as follows. (1) There are two relative concentration areas of shear strain in Fujian:the northern one is Wankou-Minqing and the southern one is Quanzhou-Xiamen.In addition,the shear strains in the two areas show a increasing trend with time. (2)the southern area of shear strain concentration is basically in a compressive strain condition and there exists relative high shear strain concentration area on the two sides of the principal fault.

关 键 词：GPS 福建沿海地区 现今地形变 位移场 应变场 剪应变 

分 类 号：P227[天文地球—大地测量学与测量工程]