Analysis of early phase ring current recovery mechanisms during geomagnetic storms

Details Analysis of early phase ring current recovery mechanisms during geomagnetic storms Analysis of early phase ring current recovery mechanisms during geomagnetic storms

Sep 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999georl..26.2845l&link_type=abstract

Geophysical Research Letters, Volume 26, Issue 18, p. 2845-2848

Physics

74

Magnetospheric Physics: Ring Current, Magnetospheric Physics: Storms And Substorms, Magnetospheric Physics: Plasma Convection, Magnetospheric Physics: Solar Wind/Magnetosphere Interactions

Scientific paper

A time-dependent kinetic model is used to investigate the relative importance of various mechanisms in the early phase decay rate of the ring current. It is found that, for both the solar maximum storm of June 4-7, 1991 and especially the solar minimum storm of September 24-27, 1998, convective drift loss out the dayside magnetopause is the dominant process in removing ring current particles during the initial recovery. During the 1998 storm, dayside outflow losses outpaced charge exchange losses by a factor of ten.

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