Other
Scientific paper
Dec 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jhatd...3..307l&link_type=abstract
Johns Hopkins APL Technical Digest (ISSN 0270-5214), vol. 3, Oct.-Dec. 1982, p. 307-324.
Other
Earth Planetary Structure, Geomagnetism, Magnetic Anomalies, Magsat Satellites, Postmission Analysis (Spacecraft), Earth Core, Earth Crust, Earth Mantle, Electric Current, Tectonics
Scientific paper
The results of analyses of the data gathered by Magsat on the geomagnetic field, crustal magnetic anomalies, fields arising from external current systems, and in investigations of the earth's core, mantle, and core-mantle boundary are presented. A least squares potential function showed that the geomagnetic field was 30,000-50,000 nanoteslas at the Magsat altitude, while fields from external sources were 0-1000 nanoteslas and those from crustal sources 0-50 nanoteslas. Long-wavelength magnetic anomalies were correlated with tectonic features, sometimes reflecting undulations in the Curie isotherm at other times changes in the structure of the lower crust. Detailed anomaly maps from regional data analyses are provided, and possible future spacecraft missions for improving the resolution of contours and strengths of the anomalies are described.
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