Goiás State - Brazil (MODGEO-GO)
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Authors: C.A.C.C. Júnior, et al.
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Created: 2018
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Resp: G.N. Guimarães
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Description:
The gravimetric geoid model for the State of Goiás covers the longitude range of -43° to -56° and the latitude range of -10° to -22°, with a resolution of 5 arc minutes. A total of 32,446 gravimetric stations were utilized for the geoid modeling. The computation was performed by the Stokes-Helmert approach through the SHGEO software package developed at the University of New Brunswick. In particular, the modified Stokes integral was applied by means of the Fast Fourier Transform. Spectral decomposition was used with the long-wavelength component represented by the EIGEN-6C4 model, up to a degree and order 250. The SAM3s_v2 digital terrain model was used too. The resulting model was assessed by comparing it with 140 GNSS/leveling stations, showing differences with a standard deviation of approximately 10 cm.
Model Citations:
C.A.C.C. Júnior, G.N. Guimarães, N.C. Ferreira (2018). The gravimetric geoid of Goiás State: MODGEO-GO-2018. V. 1.0. GFZ Data Services. DOI: 10.5880/isg.2018.004
Reference:
C.A.C.C. Júnior, G.N. Guimarães, N.C. Ferreira (2018). The Geoid Model of Goiás - MODGEO-GO. Anuário do Instituto de Geociências (UFRJ), 41, pp. 460-469 (in Portuguese). DOI: 10.11137/2018_3_460_469
Digital object identifier:
DOI: 10.5880/isg.2018.004 (geoid in ISG format)
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