Storm Time Equatorial Belt - an Image of Ring Current Behavior

Details Storm Time Equatorial Belt - an Image of Ring Current Behavior Storm Time Equatorial Belt - an Image of Ring Current Behavior

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufmsm22a0576s&link_type=abstract

American Geophysical Union, Fall Meeting 2002, abstract #SM22A-0576

Physics

2716 Energetic Particles, Precipitating, 2720 Energetic Particles, Trapped, 2730 Magnetosphere: Inner, 2778 Ring Current, 2788 Storms And Substorms

Scientific paper

During geomagnetic storms a well defined belt of trapped protons and ENAs (energetic neutral atoms) is observed around geomagnetic equator at low L-values. Their source is RC (ring current) protons existing at larger L-values. Through charge exchange with the geocorona RC protons become ENAs and if subjected to a new charge exchange become trapped protons. From low latitude particle observations at four different local times we follow; the RC injection region, the drift of RC-particles through the evening/afternoon into the morning sector, the RC-asymmetry and convection loss to the dayside during the storm initial and main phase, and its development into a symmetric RC in the recovery phase of the storm. The low L-value ion/ENA belt is thus a monitor of the RC.

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