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Services - Geoid Repository


Regional Models

South Africa (SAGEOID10)


  Authors: G. Chandler, C.L. Merry     Created: 2010    Resp: R. Wonnacott 
      Status: PUBLIC   
Description:
2½ minute by 2½ minute hybrid geoid model using land based gravity measurements, satellite altimetry, a global DEM, the Earth Gravity Model 2008 (EGM2008) and GPS/levelling. The model is only valid for South Africa between 22°S and 35°S latitude and 16°E and 33°E longitude and is estimated to have an accuracy of better than 10cm.
The geoid model is being released at this time based on the ITRF2005 (epoch 2010.02) reference frame on which TrigNet station co-ordinates are now based.
The format of the geoid file is identical to that of the EGM2008 (phi, lambda, H).

References:
G. Chandler, C.L. Merry (2010). The South African Geoid 2010: SAGEOID10. Position IT, June, pp. 29-33.

South Africa