Global vector and scalar Magsat magnetic anomaly maps

Details Global vector and scalar Magsat magnetic anomaly maps Global vector and scalar Magsat magnetic anomaly maps

Oct 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995jgr...10020111r&link_type=abstract

Journal of Geophysical Research, Volume 100, Issue B10, p. 20111-20136

Physics

Geophysics

29

Geomagnetism And Paleomagnetism: Spatial Variations (All Harmonics And Anomalies), Geomagnetism And Paleomagnetism: Time Variations-Diurnal To Secular, Marine Geology And Geophysics: Geomagnetism, Planetology: Solid Surface Planets: Magnetic Fields And Magnetism

Scientific paper

Empirical and analytical techniques for modeling ionospheric fields in Magsat data have been developed that facilitate ionospheric field removal from uncorrected anomalies to obtain better estimates of regional lithospheric anomalies. This task has been accomplished for equatorial ΔX, ΔZ, and ΔB component and polar ΔZ and ΔB component measurements. The techniques for modeling ionospheric fields have been integrated into a processing sequence that incorporates some of the important data-processing techniques developed during the last decade. Data-processing techniques include retention of common signal in a correlation analysis of adjacent passes; analysis of field differences between dawn and dusk data at point where their orbits cross; and retention of common signal in a covariant spherical harmonic analysis procedure. Results suggest that implementation of the above processing scheme leads to the mapping of the most robust magnetic anomalies of the lithosphere (vector components as well as scalar). .

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