On the ring current energy injection rate

Details On the ring current energy injection rate On the ring current energy injection rate

Aug 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983p%26ss...31..901l&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 31, Aug. 1983, p. 901-911.

Physics

14

Electric Fields, Geomagnetism, Magnetic Storms, Ring Currents, Earth Ionosphere, Energetic Particles, Heavy Ions, Plasma Layers

Scientific paper

The total ring current energy K(R) and the ring current energy injection rate U(R) are calculated as a function of the cross-tail electric field E(CT), under the assumption that the formation of the ring current belt is a direct consequence of an enhanced cross-tail electric field, and therefore of an enhanced convection. The steady state ring current energy K(R) is found to be approximately linearly proportional to E(CT), and the characteristic time for K(R) to reach saturation level is 3-4 hr. The azimuthal angle with respect to the x-axis, beta, makes U(R) proportional to E(CT) when the beta value is in the 1.33-1.52 range. Since beta is now specifically determined for an enhanced convection, an observational determination of the relationship between E(CT) and U(R) is indispensable for an understanding of ring current formation processes.

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