On the Characteristic Time Scales of Storm-time Coupling Between the Plasmasphere, Ionosphere, and Electrodynamics

Details On the Characteristic Time Scales of Storm-time Coupling Between the Plasmasphere, Ionosphere, and Electrodynamics On the Characteristic Time Scales of Storm-time Coupling Between the Plasmasphere, Ionosphere, and Electrodynamics

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufmsa11b..05m&link_type=abstract

American Geophysical Union, Fall Meeting 2005, abstract #SA11B-05

Physics

2431 Ionosphere/Magnetosphere Interactions (2736), 2712 Electric Fields (2411), 2753 Numerical Modeling, 2768 Plasmasphere

Scientific paper

It is known that the plasmasphere responds to the storm time electric fields driven by the solar wind forcing, and that it results in the depletion of the plasma density. It is generally followed by the refilling process, which replenishes the depleted flux tubes from the ionosphere in the recovery phase of a storm. The response time scales of the plasmasphere tend to be shorter during the main phase of storms as compared to those during the recovery phase. How long are the time scales of the plasmaspheric response to solar wind forcing through the disturbance in the electric field, and how does it depend on various phases of storms? In order to address these questions, we investigate the correlation between the solar wind forcing and the plasmaspheric electric field by using the Coupled Thermosphere-Ionosphere-Plasmasphere-Electrodynamics (CTIPe) model combined with the Rice Convection Model (RCM) electric field. Furthermore, the subsequent response of the plasmaspheric dynamics is addressed by a modified Sheffield University Plasmasphere Ionosphere Model (SUPIM), in order to understand the difference in the time scales of the depletion and refilling processes.

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