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Initial vector magnetic anomaly map from MagsatGlobal magnetic component anomaly field maps have been derived from the Magsat vector magnetometer data obtained from November 1979 through May 1980. The amplitude of variations of the components over the maps are between 10 and 15 nT, well above the noise in the data. Averaged data, in 2-by-2 deg blocks, exhibit standard errors of the mean of about 1 nT over most of the X and Z maps, and about 2 nT over most of the Y maps. Errors rise to about twice these amounts near the auroral belts. Most of the anomalies in the component data are consistent with a crustal magnetization model which incorporates dipoles aligned only in the direction of the main field. However, there appear to be some regions which require dipoles aligned in some other direction i.e., remanent magnetization.
Document ID
19820047250
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Langel, R. A.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Schnetzler, C. C.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Phillips, J. D.
(U.S. Geological Survey Reston, VA, United States)
Horner, R. J.
(Computer Sciences Corp. Silver Spring, MD, United States)
Date Acquired
August 10, 2013
Publication Date
April 1, 1982
Publication Information
Publication: Geophysical Research Letters
Volume: 9
Subject Category
Geophysics
Accession Number
82A30785
Distribution Limits
Public
Copyright
Other

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