Gravity gradient distribution in mainland China from GOCE satellite gravity gradiometry data

Geodesy and Geodynamics

Yongzhi Zhang¹  Hurong Duan²  Haijun Xu³ 

[1] College of Geological Engineering and Geomatics, Chang'an University, Xi'an 710054, China;College of Geomatics, Xi'an University of Science and Technology, Xi'an 710054, China;Institute of Resources and Environment, North China University of Water Resources and Electric Power, Zhengzhou 450011, China;

关键词: GOCE;    Gravity anomaly;    Satellite gravity gradiometry;    Geological tectonics;    Mainland China;    Earth's gravity field;    Geoid height;    Rigorous recursion formula;   

DOI  :  10.1016/j.geog.2015.01.001

来源: DOAJ

【 摘 要 】

At present, gravity field and steady-state ocean circulation explorer (GOCE) gravity data are always used to compute regional gravity anomaly and geoid height. In this study, the latest GOCE gravity field model data (from Oct. 2009 to Jul. 2010) are used to compute the gravity gradient of mainland China according to a rigorous recursion formula (in all the six directions). The results show that the numerical values of the gravity gradients are larger in the Trr direction than those in the other directions. They reflect the terrain characteristics in detail and correlate with the regional tectonics; however, in the Tθλ and Trλ directions, the numerical values are relatively smaller and the gravity gradients in the Trλ direction do not reflect the terrain characteristics in detail.

【 授权许可】

Unknown