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A Study of Transport in the Near-Earth Plasma Sheet During A Substorm Using Time-Dependent Large Scale KineticsIn this study we investigate the transport of H+ ions that made up the complex ion distribution function observed by the Geotail spacecraft at 0740 UT on November 24, 1996. This ion distribution function, observed by Geotail at approximately 20 R(sub E) downtail, was used to initialize a time-dependent large-scale kinetic (LSK) calculation of the trajectories of 75,000 ions forward in time. Time-dependent magnetic and electric fields were obtained from a global magnetohydrodynamic (MHD) simulation of the magnetosphere and its interaction with the solar wind and the interplanetary magnetic field (IMF) as observed during the interval of the observation of the distribution function. Our calculations indicate that the particles observed by Geotail were scattered across the equatorial plane by the multiple interactions with the current sheet and then convected sunward. They were energized by the dawn-dusk electric field during their transport from Geotail location and ultimately were lost at the ionospheric boundary or into the magnetopause.
Document ID
19990078587
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
El-Alaoui, M.
(California Univ. Los Angeles, CA United States)
Ashour-Abdalla, M.
(California Univ. Los Angeles, CA United States)
Raeder, J.
(California Univ. Los Angeles, CA United States)
Frank, L. A.
(Iowa Univ. Iowa City, IA United States)
Paterson, W. R.
(Iowa Univ. Iowa City, IA United States)
Date Acquired
August 19, 2013
Publication Date
January 1, 1998
Publication Information
Publication: Substrorms
Publisher: Kluwer Academic
Volume: 4
Subject Category
Geophysics
Funding Number(s)
CONTRACT_GRANT: NAG5-1100
Distribution Limits
Public
Copyright
Other

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