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An equivalent layer magnetization model for the United States derived from satellite altitude magnetic anomaliesLong wavelength magnetic anomalies measured by the Pogo series satellites at altitudes 400-700 km over the United States and adjacent areas are inverted to an equivalent layer magnetization model based on an equal area dipole source array at the earth's surface. Minimum source spacing giving a stable solution and a physically meaningful magnetization distribution is 300 km, and a scheme is presented for effectively sampling the distribution on a grid twice as fine. The model expresses lateral variation in the vertical integral of magnetization and is a starting point for models of lateral variation in the form of the magnetization-depth curve in the magnetic crust. The magnetization model contours correlate with large-scale tectonic features, and in the western part of the country, probably reflect Curie isotherm undulations.
Document ID
19820052288
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Mayhew, M. A.
(Business and Technological Systems, Inc. Seabrook, MD, United States)
Date Acquired
August 10, 2013
Publication Date
June 10, 1982
Publication Information
Publication: Journal of Geophysical Research
Volume: 87
Subject Category
Geophysics
Accession Number
82A35823
Funding Number(s)
CONTRACT_GRANT: NAS5-25047
Distribution Limits
Public
Copyright
Other

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