Study on Horizontal Crustal Deformation in Fujian Province Using Spherical Least Square Collocation

Calculating strain filed distribution with UPS measurement data has been an important mean to study the present day crustal horizontal deformation. A series equations of the strairrfield calculation based on spherical standard are deduced in this paper.Then calculate the UPS strain field in Fujian province using the equations.The result shows that the crustal deformation of the study area mainly affect by India plate and Philippine plate. Regional compressive strain rate is stronger than its tensile strain rate.Separated by Jiulong river fault zone，the northern crustal deformation trends have similar characteristics and the southern part of the regional crust has diverse characteristics from N-E to S-W.