Comparisons of Thermal Plasma Upflow observed on DMSP with escaping ion fluxes observed at Polar during geomagnetic quiet intervals

Details Comparisons of Thermal Plasma Upflow observed on DMSP with escaping ion fluxes observed at Polar during geomagnetic quiet intervals Comparisons of Thermal Plasma Upflow observed on DMSP with escaping ion fluxes observed at Polar during geomagnetic quiet intervals

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agufmsa33a1058r&link_type=abstract

American Geophysical Union, Fall Meeting 2007, abstract #SA33A-1058

Physics

2400 Ionosphere (6929), 2431 Ionosphere/Magnetosphere Interactions (2736), 2736 Magnetosphere/Ionosphere Interactions (2431), 6929 Ionospheric Physics (1240, 2400)

Scientific paper

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.

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