A Fast Method for Calculation of Marine Gravity Anomaly

被引:2
|
作者
Fang, Yuan [1 ]
He, Shuiyuan [2 ]
Meng, Xiaohong [1 ]
Wang, Jun [1 ]
Gan, Yongkang [1 ]
Tang, Hanhan [1 ]
机构
[1] China Univ Geosci, Sch Geophys & Informat Technol, Beijing 100083, Peoples R China
[2] China Geol Survey, Minist Land & Resources, Guangzhou Marine Geol Survey, Guangzhou 510760, Peoples R China
来源
APPLIED SCIENCES-BASEL | 2021年 / 11卷 / 03期
基金
中国国家自然科学基金;
关键词
marine gravity anomaly; the inverse Stokes formula method; GPU parallel computing;
D O I
10.3390/app11031265
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Gravity data have been playing an important role in marine exploration and research. However, obtaining gravity data over an extensive marine area is expensive and inefficient. In reality, marine gravity anomalies are usually calculated from satellite altimetry data. Over the years, numerous methods have been presented for achieving this purpose, most of which are time-consuming due to the integral calculation over a global region and the singularity problem. This paper proposes a fast method for the calculation of marine gravity anomalies. The proposed method introduces a novel scheme to solve the singularity problem and implements the parallel technique based on a graphics processing unit (GPU) for fast calculation. The details for the implementation of the proposed method are described, and it is tested using the geoid height undulation from the Earth Gravitational Model 2008 (EGM2008). The accuracy of the presented method is evaluated by comparing it with marine shipboard gravity data. Its efficiency is demonstrated through comparison with the conventional sequential method. The tests demonstrate that the proposed method can be employed for accurately calculating marine gravity anomalies and provides an advantage on computational efficiency.
引用
收藏
页码:1 / 10
页数:10
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