2026-04-04T05:59:32Zhttp://doidb.wdc-terra.org/oaip/oai

oai:doidb.wdc-terra.org:86002025-12-17T09:35:43ZDOIDBDOIDB.ISG

false4DOIDB.ISG 10.5880/isg.2022.001 Guimarães, Gabriel do Nascimento Gabriel do Nascimento Guimarães 0000-0003-4380-4650 Instituto de Geografia, Universidade Federal de Uberlândia (UFU), Uberlândia, Brazil Blitzkow, Denizar Denizar Blitzkow 0000-0003-1412-3063 Departamento de Engenharia de Transportes, Universidade de São Paulo (USP), São Paulo, Brazil Silva, Valéria Cristina Valéria Cristina Silva 0000-0003-1499-6956 Departamento de Engenharia de Transportes, Universidade de São Paulo (USP), São Paulo, Brazil de Matos, Ana Cristina Oliveira Cancoro Ana Cristina Oliveira Cancoro de Matos 0000-0002-0040-588X Centro de Estudos de Geodesia (CENEGEO), São Paulo, Brazil Inoue, Mariana Eiko Borba Mariana Eiko Borba Inoue 0000-0002-2008-3769 Instituto de Geografia, Universidade Federal de Uberlândia (UFU), Uberlândia, Brazil de Oliveira, Sean Luis Sean Luis de Oliveira Instituto de Geografia, Universidade Federal de Uberlândia (UFU), Uberlândia, Brazil GFZ Data Services 2022 Geodesy Geoid model ISG Least Squares Collocation Minas Gerais State Brazil 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 Guimarães, Gabriel do Nascimento Instituto de Geografia, Universidade Federal de Uberlândia (UFU), Uberlândia, Brazil ISG Staff International Service for the Geoid (ISG) 2022 Dataset 10.1061/(ASCE)SU.1943-5428.0000393 https://archive.org/details/Moritz1980AdvancedPhysicalGeodesy 10.5194/essd-13-1653-2021 https://www.isgeoid.polimi.it/ 1.0 CC BY 4.0 The gravimetric quasi-geoid model for the State of Minas Gerais covers the longitude range of -38º to -53º and the latitude range of -12º to -25º, with a resolution of 5 arc minutes. A total of 49,067 terrestrial gravity values were utilized to compute Molodenski's gravity anomalies. The quasi-geoid model was computed by the Least Squares Collocation method. The XGM2019 geopotential model up to degree and order 300 was employed to represent the long-wavelengths of the gravity field. The digital terrain model SRTM15+ was selected for the RTM computation, while the DTU17 gravity field model was used in oceanic areas. The quasi-geoid model was validated against 136 GNSS/leveling stations, yielding a bias of 23 cm and a standard deviation of 11 cm.

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: QuGe-MG-2022 -53 -38 -25 -12