HR: 0800h
AN: SM31A-04    [Abstracts]
TI: Comparison of Magnetospheric Ion Temperatures Obtained by Inversion of Energetic Neutral Atom Images and Direct Analysis
AU: * Keesee, A M
EM: ams_510@yahoo.com
AF: West Virginia University, Physics Department PO Box 6315, Morgantown, WV 26506, United States
AU: Scime, E
EM: escime@wvu.edu
AF: West Virginia University, Physics Department PO Box 6315, Morgantown, WV 26506, United States
AU: Perez, J D
EM: perez@physics.auburn.edu
AF: Auburn University, Physics Department, Auburn, AL 36849, United States
AB: Previous analysis of energetic neutral atom (ENA) images obtained during the 12 August 2000 storm yielded equatorial, inner magnetosphere, ion temperatures near midnight MLT that were consistent with in-situ ion temperatures measured with the Magnetospheric Plasma Analyzer instrument. The ENA derived ion temperatures were obtained through direct analysis of medium energy neutral atom images [Scime et al., 2001] and from equatorial ion flux distributions obtained from inversions of high energy neutral atom images [Zhang et al., 2005]. However, although both remote measurement techniques found evidence of a dawn-dusk asymmetry in ion temperature, the sense of the asymmetry was different for the two techniques. In this work we will present an analysis of additional storm intervals and discuss the spatial distribution of ion temperatures obtained with the two different ENA analysis methods.
DE: 2700 MAGNETOSPHERIC PHYSICS (6939)
DE: 7894 Instruments and techniques
SC: SPA-Magnetospheric Physics [SM]
MN: 2007 Joint Assembly