An evaluation of the Tsyganenko magnetic field model

Details An evaluation of the Tsyganenko magnetic field model An evaluation of the Tsyganenko magnetic field model

Feb 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jgr....96.1481f&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 96, Feb. 1, 1991, p. 1481-1494.

Physics

30

Earth Magnetosphere, Geomagnetic Tail, Kp Index, Magnetic Field Configurations, Polar Cusps, Ring Currents, Dense Plasmas, Field Aligned Currents, Solar Wind, Vector Analysis

Scientific paper

A data set of more than 22,000 vector averages of the magnetosphere magnetic field over 0.5 R(E) regions is used to evaluate Tsyganenko's 1982 and 1987 magnetospheric magnetic field models. The magnetic field predicted by the model in various regions is compared to observations to find systematic discrepancies which future models might address. While agreement is generally good, discrepancies are noted which include: (1) a lack of adequate field line stretching in the tail and ring current regions; (2) an inability to predict weak enough fields in the polar cusps; and (3) a deficiency of Kp as a predictor of the field configuration.

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