Uruguay (UruQGeoide2007/UruGeoide2007)
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Authors: W.H. Subiza Piña, et al.
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Created: 2007
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Resp: W.H. Subiza Piña
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Description:
The Uruguayan gravimetric quasi-geoid model UruQGeoide2007 and the corresponding gravimetric geoid model UruGeoide2007 were calculated by the Military Geographic Service (SGM) in 2007. The extent of these two models is from 29° S to 36° S in latitude and 52° W to 60° W in longitude, with a grid resolution of 1´ x 1´. The geodetic reference system is WGS84. The computation was based on the remove-restore procedure, using 8433 gravity observations from stations in Argentina, Brasil and Uruguay, 9172 marine free-air gravity anomalies from the KMS02 model, the GGM02C geopotential model, the SRTM terrain model and the DNSC05 bathymetric model. The reduced height anomalies were computed from the reduced gravity anomalies by Stokes integration via spherical Fast Fourier Transform. After adding back the residual terrain model effects and the contribution of the global geopotential model, the obtained quasi-geoid model (UruQGeoide2007) was transformed into a geoid model (UruGeoide2007) by using a Bouguer anomaly grid, even if the difference between the two models is 1 cm at most.
Model Citations:
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