Physics
Scientific paper
Aug 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29oors4m&link_type=abstract
Geophysical Research Letters, Volume 29, Issue 15, pp. ORS 4-1, CiteID 8003, DOI 10.1029/2001GL013693
Physics
3
Geomagnetism And Paleomagnetism: Reference Fields (Regional, Global), Geomagnetism And Paleomagnetism: Spatial Variations (All Harmonics And Anomalies), Geomagnetism And Paleomagnetism: General Or Miscellaneous
Scientific paper
Computing main-field models derived from MAGSAT and Ørsted satellite magnetic measurements, the crustal influence on satellite data can be treated as random noise. Satellite data can thus be used in conjunction with magnetic observatory measurements to isolate the non-core field at the observatory locations. Crustal biases for the horizontal northward X, eastward Y and vertical downward Z components are computed for all magnetic observatories where data are available for MAGSAT (1979-1980) and Ørsted (1999-2000) epochs, to study their correlation over twenty years. For a set of observatories installed after 1979 new crustal biases are computed.
Langlais Benoit
Mandea Mioara
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