Abstract:

With Chinese latest global gravity field model WDM94, the author provides the geoid height and mean free air gravity anomaly of Antarctic(The range of latitude is from -60° to -90°). In order to conclude and analyze the characters of Antarctic geoid roundly, the author collects overseas latest global gravity field model OSU91 (to degree and order 360) and JGMOSU (to degree and order 360), gets the corresponding geoid height and mean free air gravity anomaly. The result is compared with the result got from WDM94, thus we get the difference. The standard deviation of geoid height between WDM94 and OSU91 is ±1.90m;the deviation of geoid between WDM94 and JGMOSU is ±2.09m. The standard deviation of mean gravity anomaly are ±8.97mgal and ±9.32mgal respectively.