2026-05-13T19:31:38Zhttp://doidb.wdc-terra.org/oaip/oai

oai:doidb.wdc-terra.org:79782024-09-03T06:53:40ZDOIDBDOIDB.ISG

false4DOIDB.ISG 10.5880/isg.2007.001 Subiza Piña, Walter Humberto Walter Humberto Subiza Piña 0009-0006-7133-806X Servicio Geográfico Militar, Montevideo, Uruguay GFZ Data Services 2007 Geodesy Geoid model ISG Fast Fourier Transform Uruguay EARTH SCIENCE > SOLID EARTH > GEODETICS > GEOID CHARACTERISTICS EARTH SCIENCE > SOLID EARTH > GRAVITY/GRAVITATIONAL FIELD > GRAVITY Reguzzoni, Mirko Mirko Reguzzoni 0000-0002-4027-9347 International Service for the Geoid (ISG), Politecnico di Milano, Italy Carrion, Daniela Daniela Carrion 0000-0003-1262-9394 International Service for the Geoid (ISG), Politecnico di Milano, Italy Rossi, Lorenzo Lorenzo Rossi 0000-0001-6050-1972 International Service for the Geoid (ISG), Politecnico di Milano, Italy Subiza Piña, Walter Humberto Servicio Geográfico Militar, Montevideo, Uruguay ISG Staff International Service for the Geoid (ISG) 2007 Dataset https://www.isgeoid.polimi.it/Geoid/America/Uruguay/Modelo_Geoidal_SGM2007.pdf 10.1007/978-3-642-72245-5_8 10.5194/essd-13-1653-2021 http://www.isgeoid.polimi.it/ 10.5880/isg.2007.002 10.5880/isg.2007.003 1.0 CC BY 4.0 The Uruguayan gravimetric quasi-geoid model UruQGeoide2007 was calculated by the Military Geographic Service (SGM) in 2007. The extent 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 and the quasi-geoid model was finally obtained by adding back the residual terrain model effects and the contribution of the global geopotential model.

The geoid model is provided in ISG format 2.0 (ISG Format Specifications), while the file in its original data format is available at the model ISG webpage.
The International Service for the Geoid (ISG) was founded in 1992 (as International Geoid Service - IGeS) and it is now an official service of the International Association of Geodesy (IAG), under the umbrella of the International Gravity Field Service (IGFS). The main activities of ISG consist in collecting, analysing and redistributing local and regional geoid models, as well as organizing international schools on the geoid determination (Reguzzoni et al., 2021).
Gravimetric quasi-geoid model: UruQGeoide2007 -60 -52 -36 -29