HR: 1340h
AN: SA33A-1058    [Abstracts]
TI: Comparisons of Thermal Plasma Upflow observed on DMSP with escaping ion fluxes observed at Polar during geomagnetic quiet intervals
AU: * Redmon, R
EM: rob.redmon@noaa.gov
AF: National Geophysical Data Center, NOAA, 325 Broadway, Boulder, CO 80305, United States
AU: Peterson, W
EM: pete@lasp.colorado.edu
AF: Laboratory for Atmospheric and Space Physics, 1234 Innovation Dr., Boulder, CO 80303, United States
AU: Kihn, E A
EM: eric.a.kihn@noaa.gov
AF: National Geophysical Data Center, NOAA, 325 Broadway, Boulder, CO 80305, United States
AB: Most magnetospheric models lack species dependent dynamics. O+ is known to be present in the magnetosphere and to have a significant impact on some magnetospheric processes. One of the significant hurdles to including heavy ions such as O+ into magnetospheric models is a method to calculate or estimate the fraction of upwelling heavy ions with less than escape energy that acquire escape energy above the ionosphere. This paper presents a statistical comparison of thermal plasma upwelling flux with the flux of escaping ions. The thermal plasma is measured at 800 km by the Defense Meteorological Satellite Program (DMSP) Special Sensors-Ions Electrons and Scintillation (SSIES) instrument suite. The escaping flux of ions is measured by the Toroidal Imaging Mass-Angle Spectrograph (TIMAS) on the Polar spacecraft at ~7,000 km over the southern polar cap. This is a climatological study and as such focuses on geomagnetically quiet intervals determined by Dst less than -50nT during the solar minimum period (1996 - 1998) of solar cycle 23.
DE: 2400 IONOSPHERE (6929)
DE: 2431 Ionosphere/magnetosphere interactions (2736)
DE: 2736 Magnetosphere/ionosphere interactions (2431)
DE: 6929 Ionospheric physics (1240, 2400)
SC: SPA-Aeronomy [SA]
MN: 2007 Fall Meeting