Calculation and analysis of 2'× 2' gravity anomalies over the South China Sea based on Cryosat-2 satellite altimeter data

被引：0
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作者：
School of Geosciences in China University of Petroleum, Qingdao [1 ]
266580, China
不详 [2 ]
266061, China
机构：
[1] School of Geosciences in China University of Petroleum, Qingdao
[2] First Institute of Oceanography, State Oceanic Administration, Qingdao
来源：
Zhongguo Shiyou Daxue Xuebao (Ziran Kexue Ban) | / 3卷 / 70-75期
关键词：
Cryosat-2; Gravity anomaly; Inverse Vening-Meinesz formula; Satellite altimetry;
D O I：
10.3969/j.issn.1673-5005.2015.03.009
中图分类号：
学科分类号：
摘要：
The gravity anomaly of the South China Sea was calculated with high spatial resolution and precision using the Cryosat-2 data. The tracks and crossover points of the Cryosat-2 satellite altimetry level 2 SIR_GDR_2A data were analyzed. The component of grid residual vertical deflection was calculated with the weighted minimum least squares solution method using the cycle1-cycle4 data, then the gravity anomalies in 2'× 2' grid over the South China Sea between 4°-24° latitude and 105°-120° longitude were determined. The results show that the Cryosat-2 data have a high track density, and are distributed regularly and uniformly with a 15.9 cm RMS value of crossover point differences, which is slightly higher than the synchronous Jason-2 GDR data. Compared with the post-processed shipboard gravimetry, the root mean square value of the gravity anomaly in 2'× 2' grid over the South China Sea is 4.5×10-5 m·s-2. ©, 2015, Zhongguo Shiyou Daxue Xuebao (Ziran Kexue Ban)/Journal of China University of Petroleum (Edition of Natural Science). All right reserved.
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页码：70 / 75
页数：5
相关论文
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