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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。
Aiming at the lack of observation on the horizontal deformation of crust in the southeastern coast of Fujian Province, the multi-faceted function model is constructed in the spherical coordinate system and the horizontal deformation field of the crust in the southeast coast of Fujian Province is established. The basic trend of the crustal movement in the Hercynian southeastern margin of the mainland of China and the relative internal deformation of the block in Fujian area are analyzed. The experimental results show that the crustal deformation in this area is mainly affected by the joint action of the Philippine Sea Plate and the Indian Plate. Rigid block movement characteristics of the obvious, the relative movement difference is small. A series of NE and NW trending faults within the region jointly controlled the evolution and tectonic activity of Quaternary topography in the area.