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Satellite Elevation Magnetic and Gravity Models of Major South American Plate Tectonic FeaturesSome MAGSAT scalar and vector magnetic anomaly data together with regional gravity anomaly data are being used to investigate the regional tectonic features of the South American Plate. An initial step in this analysis is three dimensional modeling of magnetic and gravity anomalies of major structures such as the Andean subduction zone and the Amazon River Aulacogen at satellite elevations over an appropriate range of physical properties using Gaus-Legendre quadrature integration method. In addition, one degree average free-air gravity anomalies of South America and adjacent marine areas are projected to satellite elevations assuming a spherical Earth and available MAGSAT data are processed to obtain compatible data sets for correlation. Correlation of these data sets is enhanced by reduction of the MAGSAT data to radial polarization because of the profound effect of the variation of the magnetic inclination over South America.
Document ID
19840017063
Acquisition Source
Legacy CDMS
Document Type
Other - Other
Authors
Vonfrese, R. R. B.
(SOHIO Petroleum Co. Cleveland, OH, United States)
Hinze, W. J.
(Purdue Univ. Lafayette, Ind., United States)
Braile, L. W.
(Purdue Univ. Lafayette, Ind., United States)
Lidiak, E. G.
(Pittsburgh Univ. El Paso, United States)
Keller, G. R.
(Texas Univ.)
Longacre, M. B.
(Sohio Petroleum Co.)
Date Acquired
August 12, 2013
Publication Date
January 1, 1984
Publication Information
Publication: Texas Univ. Appl. of MAGSAT to Lithospheric Modeling in South America, Part 2
Subject Category
Geophysics
Meeting Information
Meeting: IAGA Sci. Assembly
Location: Edinburgh
Start Date: August 3, 1981
End Date: August 15, 1981
Accession Number
84N25131
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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