Satellite altimetry can easily provide the space gravity data of the highest resolution. 摘要卫星重力测高能提供高分辩率的空间重力异常资料。
For instance, salt domes appear as negative anomalies because rock salt is of a lower density than all consolidated sediments. 例如,盐穹表现为负的重力异常,因为比起所有的固结沉积物,岩盐具有较低的密度。