Physics – Geophysics
Scientific paper
Nov 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988rvgeo..26..782s&link_type=abstract
Reviews of Geophysics (ISSN 8755-1209), vol. 26, Nov. 1988, p. 782-791.
Physics
Geophysics
18
Earth Magnetosphere, Geomagnetism, Lines Of Force, Magnetic Field Configurations, Convection, Electric Fields, Geomagnetic Tail, Magnetic Flux, Polar Cusps
Scientific paper
The state of knowledge concerning the global pattern of geomagnetic field lines is reviewed. Sources of information on that pattern include (1) magnetic-field models, derived directly from magnetic data or indirectly from generally observed properties and from physics; (2) the tracing of magnetospheric features (e.g., polar cusps or the inner edge of the plasma sheet); (3) matching of magnetic flux; and (4) analysis of magnetic fields. Field-line structure inside about 8 earth radii is known fairly well, but beyond that, especially in the tail, the situation becomes rather uncertain and variable. Two particularly difficult problems are the linkage between open field lines and the interplanetary field and the field-line structure of the quiescent magnetosphere following periods of prolonged northward Bz.
Alekseev Igor'i.
Stern David P.
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