海洋垂直重力梯度异常的计算及其在地形反演中的应用

将测高重力异常、局部大地水准面和垂线偏差作为输入数据，计算海洋垂直重力梯度异常。以中西太平洋海域作为研究对象，对垂直重力梯度异常和海底地形的相关性进行分析，在20~200 km波段范围内利用梯度异常推估海底地形。结果表明，反演地形的相对精度在7.14%左右，在多海山地区精度较差。

The Calculation of Vertical Gravity Gradient Anomalies and Its Application in Bathymetry Inversion

Altimeter gravity anomalies, geoid and vertical deflection are used to calculate oceanic vertical gravity gradient anomalies. The correlation between the gravity gradient anomalies and bathymetry is analyzed. Taking islands in Midwest Pacific Ocean as examples, the bathymetry model is inversed in 20~200 km wavelength; results show that the relative precision of the bathymetry model is 714%. In seamount distributed areas, the relative precision is lower.