SDUST2023VGGA

SDUST2023VGGA is a global oceanic vertical gradient of gravity anomaly (VGGA) model on a 1'×1' grid, constructed using multi-directional mean sea surface (MSS) data from the DTU21MSS. Covering latitudes from 80°S to 80°N, this model incorporates multi-directional observations to better capture variations in the oceanic gravity field. Comparison with the SIO V32.1 model indicates a high level of consistency, supporting SDUST2023VGGA’s suitability for studies of seafloor structure, ocean geophysics, and mass distribution.SDUST2023VGGA是一款基于1角分×1角分网格的全球海洋重力异常垂直梯度（Vertical Gradient of Gravity Anomaly，VGGA）模型，其构建依托DTU21MSS提供的多向平均海平面（Mean Sea Surface，MSS）数据。该模型覆盖南纬80°至北纬80°的海域，通过融合多方向观测数据，能够更精准地捕捉海洋重力场的变化特征。与SIO V32.1模型的对比结果显示，二者具有较高的一致性，这证实了SDUST2023VGGA适用于海底构造、海洋地球物理以及质量分布相关研究。