New free-Air and Bouguer Gravity Anomalies Maps of Brazil

Roberto Paulo Zanon dos Santos, Yára Regina Marangoni, Carlos Alberto Moreno Chaves, Giuliano Sant’Anna Marotta


Here we perform the integration of all available data from the BNDG (Banco Nacional de Dados Gravimétricos) and the BDEP (Banco de Dados de Exploração e Produção da Agência Brasileira de Petróleo) to provide new free-air and Bouguer gravity anomaly maps for the Brazilian territory with newly acquired data over the years, mainly in regions with no data coverage in the past. Quality controls and subsequent gridding processes, in the same system of the whole dataset, are developed on the Oasis Montaj software (OM). Subsets of data from various gravity surveys are gridded and upward continued up to 3000 m to avoid high-frequency noise, allowing them to be gathered. We fill areas with no data coverage in the North Region of Brazil with gravity values from the XGM2019e geopotential model. To join the subset grids of ground and airborne surveys and the geopotential model, we use a collection of grids knitting methods from the OM. To verify the consistency of our grids, we compare them with previously derived gravity anomalies maps and geopotential models. Our new free-air and Bouguer gravity anomalies maps showmore detailed short-wavelength geological structures than their predecessors. Therefore, these new gravity anomalies maps may be helpful for the development of recent tectonic, oil, and mining studies.


Gravity anomalies map; data integration; potential methods;

Full Text:



ANP – Agência Nacional do Petróleo, Gás Natural e Biocombustíveis. 2010a. Aerolevantamento Gravimétrico e Magnetométrico. Bloco Amazonas. Bacia do Solimões. Relatório final de aquisição e processamento de dados. Technical Report: Lasa Engenharia e Prospecções S.A. V. 1. 56p.

ANP – Agência Nacional do Petróleo, Gás Natural e Biocombustíveis. 2010b. Aerolevantamento Gravimétrico e Magnetométrico. Bacia do Paraná. Relatório final de aquisição e processamento de dados. Technical Report: Lasa Engenharia e Prospecções S.A. V. 1. 98p.

ANP – Agência Nacional do Petróleo, Gás Natural e Biocombustíveis. 2011. Aerolevantamento Geofísico Aerogravimétrico. Bacia Sedimentar do Solimões. Relatório final de processamento de dados. Technical Report: HRT O&G Exploração e Produção de Petróleo Ltda / Lasa Engenharia e Prospecções S.A. V. 1. 16p.

Becker JJ; Sandwell DT; Smith WHF; Braud J; Binder B; Depner J; Fabre D; Factor J; Ingalls S; Kim S-H; Ladner R; Marks K; Nelson S; Pharaoh A; Trimmer R; Von Rosenberg J; Wallace G; Weatherall P. 2009. Global Bathymetry and Elevation Data at 30 Arc Seconds Resolution. Marine Geodesy. Vol. 32. Issue 4. pp 355-371.

Blakely RJ. 1995. Potential Theory in Gravity & Magnetics Applications. Cambridge. Cambridge University Press. 441p.

Breville GL; Beierle CH; Sanders JR; Voss JT and Wilcox LE. 1973. A Bouguer gravity anomaly map of South America. Defense Mapping Technical Papers, V. 73-2, 21p. Defense Mapping Agency, St. Louis, Mo., USA.

Castro Junior, CAC; Guimarães, GN; Ferreira, NC. 2018. Evolução da Infraestrutura Gravimétrica no Brasil. Revista Geociências Unesp. V. 37, No. 2. pp 361-384. DOI:10.5016/geociencias.v37i2.12807

Correa, R. T. 2016. Mapa Radiométrico do Brasil (1st ed.). Escala 1:5.000.000. Brasília, CPRM – Serviço Geológico do Brasil.

Correa, R. T.; de Sordi, D. A.; Chiarini, M. F. N. 2016. Mapa Magnetométrico do Brasil (2nd ed.). Escala 1:5.000.000. Brasília, CPRM – Serviço Geológico do Brasil.

Dutra, AC; Marangoni, YR; Junqueira-Brod, TC. 2012. Investigation of the Goiás Alkaline Province, Central Brazil: Application of gravity and magnetic methods. Journal of South American Earth Sciences. v. 33. Issue 1. pp. 43-55.

Dransfield MH. 2009. Conforming FALCON gravity and the global gravity anomaly. Geophysical Prospecting. 2010. Vol. 58. pp 469-483. DOI: 10.1111/j.1365-2478.2009.00830.x

Gabell A; Tuckett H; Olson D. 2004. The GT-1A mobile gravimeter. Airborne Gravity 2004. Abstracts from the ASEG-PESA Airborne Gravity 2004 Workshop. Geoscience Australia Record 2004/18. pp 55-61.

Green CM, Fairhead JD. 1993 The South American Gravity Project. In: Torge W., Fletcher A.G., Tanner J.G. (eds) Recent Geodetic and Gravimetric Research in Latin America. International Association of Geodesy Symposia, vol 111. Springer, Berlin, Heidelberg.

Hinze WJ. 2003. Bouguer reduction density, why 2.67?, Geophysics, 68(5), pp.1559-1560.

IAG - International Association of Geodesy .1971. Geodetic Reference System 1967. Pub. Spec. No. 3 du Bulletin Géodésique. 115p.

Kane MF. 1962. A comprehensive system of terrain corrections using a digital computer. Geophysics. Vol 27. No. 4. pp 455-462.

Krarup T. 1969. A Contribution to the Mathematical Foundation of Physical Geodesy. Publication No. 4. Danish Geodetic Institute. Copenhagen. 80p.

Kvas A; Mayer-Gürr T; Krauss S; Brockmann JM; Schubert T; Schuh W-D; Pail R; Gruber T; Jäggi A; Meyer U. 2019. The satellite-only gravity model GOCO06s. GFZ Data Serv.

Lee JB. 2001. FALCON Gravity Gradiometer Technology. Exploration Geophysics. Vol. 32. Pp 75-79.

Lozhinskaya AM. 1959. The string gravimeter for measurement of gravity at sea. Bulletin of the Academy of Sciences USSR Geophysics Series. V. 3. pp 398-409.

Mantovani, MSM; Louro, VHA; Ribeiro, VB; Santos, RPZ; Requejo, HS. 2015. Geophysical analysis of Catalão I alcaline-carbonatite complex in Goiás, Brazil. Geophysical Prospecting. V. 61, p. 216-227.

Marangoni. YR; Mantovani, MSM. 2013. Geophysical signatures of the Alkaline intrusions bordering the Paraná Basin. Journal of South American Earth Sciences. v. 41. pp. 83-98.

Moritz H. 1972. Advanced least-squares Methods. Report No. 175. Department of Geodetic Science. Ohio State University. 132p.

Moritz H. 1980. Geodetic Reference System 1980. Bulletin Géodésique. Vol 54. pp 395-405.

Nagy D. 1966. The gravitational attraction of a right rectangular prism. Geophysics. Vol. 31. No. 2. pp 362-371.

Oasis Montaj. 2021. Online learning interface. Available on: Access on: Jan. 21, 2022.

ON - Observatório Nacional. 1987. Rede Gravimétrica Fundamental Brasileira. Publication. Dep. of Geophysics, Rio de Janeiro. Brazil. 419 p.

Pavlis NK; Holmes SA; Kenyon SC; Factor JK. 2012. The development and evolution of the Earth Gravitational Model 2008 (EGM2008). Journal of Geophysical Research. Vol 117. Issue B4.

Rexer M; Hirt C; Pail R. 2017. High-resolution global forward modeling: a degree-5480 global ellipsoidal topographic potential model. In: 19th EGU General Assembly Conference Abstracts. Vienna, Austria. Vol. 19. 7725 p.

Sá NC; Ussami N; Molina EC. 1993 Gravity Map of Brazil. 1. Representation of Free-Air and Bouguer Anomalies. J. Geophys. Res., 98(B2): pp. 2187-2197.

Sá, NC. 2004. O campo de gravidade, o geóide e a estrutura crustal na América do Sul. Tese de livre Docência. IAG-USP, São Paulo, 121p.

Zingerle P; Pail R; Bruber T; Oikonomidou X. 2020. The combined global gravity field model XGM2019e. Journal of Geodesy, vol. 94, issue 7, art. 66.


Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.


>> Brazilian Journal of Geophysics - BrJG (online version): ISSN 2764-8044
a partir do v.37n.4 (2019) até o presente

Revista Brasileira de Geofísica - RBGf (online version): ISSN 1809-4511
v.15n.1 (1997) até v.37n.3 (2019)

Revista Brasileira de Geofísica - RBGf (printed version): ISSN 0102-261X
v.1n.1 (1982) até v.33n.1 (2015)


Brazilian Journal of Geophysics - BrJG
Sociedade Brasileira de Geofísica - SBGf
Av. Rio Branco 156 sala 2509
Rio de Janeiro, RJ, Brazil
Phone/Fax: +55 21 2533-0064

Since 2022, the BrJG publishes all content under Creative Commons CC BY license. All copyrights are reserved to authors.

Creative Commons