HR: 1340h
AN: SA33A-1064    [Abstracts]
TI: Electromagnetic Energy Deposition and Transport during the November 2004 Storm
AU: * Huang, C Y
EM: cheryl.huang@hanscom.af.mil
AF: AFRL/VSBXP, 29 Randolph Road, Hanscom AFB, MA 01731, United States
AU: Burke, W J
EM: william.burke2@hanscom.af.mil
AF: AFRL/VSBXP, 29 Randolph Road, Hanscom AFB, MA 01731, United States
AU: Weimer, D R
EM: weimer@solanasci.com
AF: Solana Scientific Inc., 11 Laurel Crest Drive, Brookline, NH 03033, United States
AU: Wilson, G R
EM: Gordon.Wilson.ctr@hanscom.af.mil
AF: Boston College, 140 Commonwealth Avenue, Chestnut Hill, MA 02167, United States
AU: Wise, J O
EM: john.wise@hanscom.af.mil
AF: AFRL/VSBXP, 29 Randolph Road, Hanscom AFB, MA 01731, United States
AB: During the magnetic storm of 9 - 11 November 2004, the polar-orbiting DMSP, CHAMP and GRACE satellites sampled ionospheric and thermospheric responses at local times extending from dusk into the post-midnight sector. We compare Poynting fluxes measured by sensors on four DMSP satellites on 10 November with those predicted by the Weimer model. Both show intermittent, peak energy deposition rates of 80 mW/m**2. during the day. Neutral densities inferred from the accelerometers on CHAMP and GRACE showed remarkably fast increases during times when Poynting fluxes were high. This suggests that rapid coupling between ions and neutrals leads to fast changes in thermospheric densities during storms, behavior not captured by current models. Further, local neutral density maxima are seen to progress from high to low latitudes on orbit-to-orbit time scales, suggesting that stormtime winds transport much of the deposited energy from the auroral oval towards the equator.
DE: 2407 Auroral ionosphere (2704)
DE: 2427 Ionosphere/atmosphere interactions (0335)
DE: 2788 Magnetic storms and substorms (7954)
SC: SPA-Aeronomy [SA]
MN: 2007 Fall Meeting