MODEL OF CRUSTAL VERTICAL MOVEMENT VELOCITY FIELD
BASED ON HEBEI CORS NETWORK
1)Liaoning Electric Power Survey and Design Institute,Shenyang 110005
2)Quality and Testing Center of National Mapping Products,Beijing 100830
3)Chinese Academy of Surveying and Mapping,Beijing 100830
4)No.107 Prospecting Team,Geologica Bureau of Northeast Coalfield,Fuxin 123100
Abstract：The vertical crustal movement velocity field in Hebei is calculated using the GAMIT/GLOBK software with GPS observational data of the firststage stations of Hebei CORS network in the past four years. The results show that the mainly vertical crustal movement is a downward motion and that southeast plain region is a serious settlement area in Hebei. The cumulative subsidence in the past three years is more than 150 mm in part areas. And the vertical descent rate in November is faster than that in April. The larger difference of rate has more than 10 mm/a. The model of vertical crustal movement velocity field in Hebei is established based on the method of multiquadric functions and 6′×6′grid velocity is calculated and the isoline map of vertical movement velocity is drew.
Chen Xing,Cheng Pengfei,Cheng Yingyan et al. MODEL OF CRUSTAL VERTICAL MOVEMENT VELOCITY FIELD
BASED ON HEBEI CORS NETWORK[J]. jgg, 2013, 33(4): 48-51.
