HR: 0800h
AN: SA21B-0349    [Abstracts]
TI: Mid-Latitude Ionospheric Response to Storm Time Electric Field
AU: * Swisdak, M
EM: swisdak@ppd.nrl.navy.mil
AF: Icarus Research, Inc., 7113 Exfair Road, Bethesda, MD 20814 United States
AU: Joyce, G
EM: joyce@ppd.nrl.navy.mil
AF: George Mason University, 1222 Braddock Road, Fairfax, VA 22321 United States
AU: Huba, J
EM: huba@ppd.nrl.navy.mil
AF: Naval Research Laboratory, Plasma Physics Division, Washington, DC 20375 United States
AB: Huang et al. (private communication, 2004) have reported large increases, factors of 2-3, in the mid-latitude ionospheric electron density in the aftermath of a magnetic storm. The density increase was observed at two mid-latitude sites (Millstone Hill and Eglin), but was not seen at lower latitudes (Areceibo). Accompanying the increase was a decrease (of 800-1500 K) in the F-region electron temperature. We present simulations results from the NRL ionosphere models SAMI2 and SAMI3 of the response of the mid-latitude F-region ionosphere to an imposed electric field that simulates this magnetic storm. We obtain reasonable agreement with the observed density and temperature features despite a simple model of the storm electric field. \medskip \noindent Research supported by ONR.
DE: 7519 Flares
DE: 2435 Ionospheric disturbances
DE: 2443 Midlatitude ionosphere
DE: 2736 Magnetosphere/ionosphere interactions
DE: 2788 Storms and substorms
SC: SPA-Aeronomy [SA]
MN: 2004 AGU Fall Meeting