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Spherical earth gravity and magnetic anomaly analysis by equivalent point source inversionTo facilitate geologic interpretation of satellite elevation potential field data, analysis techniques are developed and verified in the spherical domain that are commensurate with conventional flat earth methods of potential field interpretation. A powerful approach to the spherical earth problem relates potential field anomalies to a distribution of equivalent point sources by least squares matrix inversion. Linear transformations of the equivalent source field lead to corresponding geoidal anomalies, pseudo-anomalies, vector anomaly components, spatial derivatives, continuations, and differential magnetic pole reductions. A number of examples using 1 deg-averaged surface free-air gravity anomalies of POGO satellite magnetometer data for the United States, Mexico, and Central America illustrate the capabilities of the method.
Document ID
19810047271
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Von Frese, R. R. B.
(Purdue Univ. West Lafayette, IN, United States)
Hinze, W. J.
(Purdue Univ. West Lafayette, IN, United States)
Braile, L. W.
(Purdue University West Lafayette, Ind., United States)
Date Acquired
August 11, 2013
Publication Date
March 1, 1981
Publication Information
Publication: Earth and Planetary Science Letters
Volume: 53
Issue: 1, Ma
Subject Category
Geophysics
Accession Number
81A31675
Funding Number(s)
CONTRACT_GRANT: NAS5-25030
CONTRACT_GRANT: NAS5-22816
Distribution Limits
Public
Copyright
Other

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