球多面函数的福建地区水平形变特征分析  

Study on horizontal crustal deformation feature of Fujian based on spherical multiquadric equations

作　　者：孟涛[1] 马治忠[1] 路晓磊[1] 马龙[1] 孟祥恩[1] 

机构地区：[1]国家海洋局北海海洋技术保障中心,山东青岛266033

出　　处：《测绘科学》2017年第9期56-61,共6页Science of Surveying and Mapping

摘　　要：针对福建省东南沿海GNSS观测较少,缺乏对其地壳水平形变特征研究的问题,提出了在球坐标系下构建多面函数模型,并以此建立了福建省东南沿海地壳水平形变场。分析了现今我国大陆东南缘海西地区地壳运动基本趋势以及福建区域块体内部相对变形特征。实验结果表明,该区域的地壳形变驱主要受到菲律宾海板块与印度板块的联合作用。区域块体刚性运动特征明显,相对运动差异较小。区内分布的一组NE和NW向断裂共同控制了该地区的第四纪地形地貌演变与构造活动。Due to the fact that the GPS observation stations are relatively scarce in the southeast coast of Fu- jian, this paper established a crustal horizontal deformation model of this study area with the method of spherical multiquadric equations. Based on the method, we could make an accurate description on continuously internal crus- tal deformation. The results show that the crustal horizontal deformation of the study area is mainly affected by the subduction and compression from the Indian plate and the Philippine Sea plate towards the Eurasia. Compared with the internal relative deformation, the main character of the local crustal horizontal deformation more close to the rigid rotation. The internal deformation of this study area is largely controlled by a group active faults, which have the distributions towards north-west and north-east.

关 键 词：多面函数 欧亚参考框架 球坐标 应变场 面膨胀率 

分 类 号：TU196[建筑科学—建筑理论]