ERROR ESTIMAION ONGRAVITY LOADING CORRECTION
Xu Houze(Institute of Geodesy and Geophysics, Chinese Academy of Science)
The precision of loading correction depends on the accuracy of cotidal map and earth model. Our estimation shows that. the available precision for gravity loading correction are: M2 wave ±0.22μgal. O1 waye ±0.09μgal by conyolution alone. and M2 wave ±0. 29μgal. O1 wave ±0. 13μgal by use of conyolution and harmonic expansion. The main effect comes from the error of cotidal map and earth model in the region near coast.