HR: 09:05h
AN: SA11B-05    [Abstracts]
TI: On the Characteristic Time Scales of Storm-time Coupling Between the Plasmasphere, Ionosphere, and Electrodynamics
AU: * Maruyama, N
EM: naomi.maruyama@noaa.gov
AF: Cooperative Institute for Research in Environmental Sciences, University of Colorado/Space Environment Center, National Oceanic and Atmospheric Administration, 325 Broadway, Boulder, CO 80305 United States
AU: Fuller-Rowell, T J
EM: Tim.Fuller-Rowell@noaa.gov
AF: Cooperative Institute for Research in Environmental Sciences, University of Colorado/Space Environment Center, National Oceanic and Atmospheric Administration, 325 Broadway, Boulder, CO 80305 United States
AU: Richmond, A D
EM: richmond@ucar.edu
AF: High Altitude Observatory, National Center for Atmospheric Research, 3450 Mitchell Lane, Boulder, CO 80301 United States
AU: Sazykin, S
EM: sazykin@rice.edu
AF: Physics and Astronomy Department, Rice University, 6100 South Main St., Houston, TX 77005 United States
AU: Lin, C
EM: clin@ss.ncu.edu.tw
AF: Institute of Space Science, National Central University, Chung-Li, 320 Taiwan
AU: Millward, G H
EM: george@apl.ucl.ac.uk
AF: Atmospheric Physics Laboratory, University College London, 67-73 Riding House Street, London, W1W 7EJ United Kingdom
AU: Bailey, G J
EM: G.Bailey@sheffield.ac.uk
AF: Department of Applied Mathematics, University of Sheffield, Sheffield, S3 7RH United Kingdom
AB: 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.
DE: 2431 Ionosphere/magnetosphere interactions (2736)
DE: 2712 Electric fields (2411)
DE: 2753 Numerical modeling
DE: 2768 Plasmasphere
SC: SPA-Aeronomy [SA]
MN: Fall Meeting 2005