Determination of Antarctic geoid by using global gravity field

With Chinese latest global gravity field model WDM94, the authors provide the geoid height and mean free-air gravity anomaly of Antarctica (The range of latitude is from -60°to -90)°. In order to conclude and analyze the characters of Antarctic geoid roundly, the authors collect the latest oversea g...

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Bibliographic Details
Main Authors: Chunming, Chen, Jiancheng, Li
Format: Article in Journal/Newspaper
Language:English
Published: Polar Research Institute of China - PRIC 2000
Subjects:
Antarctic
Advances in Polar Science
Antarc*
Antarctica
Polar Science
Online Access:http://library.arcticportal.org/2191/
http://library.arcticportal.org/2191/1/A200001000.pdf
Description
Summary:With Chinese latest global gravity field model WDM94, the authors provide the geoid height and mean free-air gravity anomaly of Antarctica (The range of latitude is from -60°to -90)°. In order to conclude and analyze the characters of Antarctic geoid roundly, the authors collect the latest oversea global gravity field model OSU91 (to degree and order 360) and JGMOSU (to degree and order 360), get the corresponding geoid height and mean free-air gravity anomaly. The results arc compared with the results got from WDM94, thus we get the difference. The standard deviation of geoid height between WDM94 and OSU91 is ±1.90 m; the deviation of geoid between WDM94 and JGMOSU is ±2.09 m. The standard deviation of mean gravity anomaly are ±8.97 mGal and ±9.32 mGal respectively.

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