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The Joint US/UK 1990 Epoch world Magnetic Model
Author(s) -
John M. Quinn,
Rachel J. Coleman,
Michael R. Peck,
Stephen E. Lauber
Publication year - 1991
Publication title -
nasa technical reports server (nasa)
Language(s) - English
Resource type - Reports
DOI - 10.21236/ada245860
Subject(s) - stereographic projection , epoch (astronomy) , secular variation , mercator projection , variation (astronomy) , magnetic field , geodesy , magnetic declination , geography , geology , physics , geophysics , earth's magnetic field , astrophysics , mathematics , geometry , stars , quantum mechanics
: A detailed summary of the data used, analyses performed, modeling techniques employed, and results obtained in the course of the 1990 Epoch World Magnetic Modeling effort are given. Also, use and limitations of the GEOMAG algorithm are presented. Charts and tables related to the 1990 World Magnetic Model (WMM-90) for the Earth's main field and secular variation in Mercator and polar stereographic projections are presented along with useful tables of several magnetic field components and their secular variation on a 5-degree worldwide grid.

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