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中文摘要：
论述了频率域内海深反演的基本原理,简要分析海底地形和海洋重力异常的函数关系。基于未补偿板块响应函数模型,利用测高重力异常和ETOPO1海深模型对南中国海海底地形进行反演,经ETOPO1模型和实测水深检核,反演出的海深模型相对精度在10%左右。该技术不需要船测数据作为控制,需要先验的海深模型作为参考,在浅海以及多海山地区精度较差,并存在过低估计海山峰值的问题。
英文摘要：
This article discusses the basic principle of bathymetry inversion in frequency domains. , In addition, the response function relationship between the bathymetry and gravity anomaly is analyzed briefly. Based on the uncompensated plate model, the bathymetry in South China Sea is predicted from satellite altimetry-derived gravity anomaly and the ETOPO1 model. The precision of the predic- ted bathymetry model is about 10% using the ETOPO1 model and ship-derived bathymetry data. The advantage of this technique is that there is no need to use the ship borne bathymetry data as control points, and the disadvantage is that it requires a prior bathymetry model as a reference. Furthermore, in shallow sea and seamount areas, the precision is a bit lower, and the seamount peak is underestimated excessively.
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