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Investigating the Role of the Earth's Ionosphere in Space Weather: Modeling and Observations of High-Latitude Ionospheric OutflowsWe will present what we believe to be the first reported observations of up- and downflows of topside ionospheric thermal plasmas from multiple near-simultaneous tracks through the high-latitude topside ionosphere. From several Southern polar passes, it has been possible to construct plots of field-aligned flows of 0+ observed by the Thermal Ion Dynamics Experiment(TIDE) on the POLAR spacecraft near 5000 km altitude together with vertical ion flow observations from one or more DMSP spacecraft near 800 km altitude. We also will present simultaneous observations of POLAR auroral LTVI images with field-aligned flows. We will further show new fluid-kinetic simulations of auroral ionospheric flows in the altitude range 120 km to several R-E as subjected to the synergistic auroral effects of soft electron precipitation, transverse wave-driven ion heating, and hot plasma-driven electric potentials.
Document ID
20000038390
Acquisition Source
Marshall Space Flight Center
Document Type
Preprint (Draft being sent to journal)
Authors
Horwitz, J. L.
(Alabama Univ. Huntsville, AL United States)
Zeng, W.
(Alabama Univ. Huntsville, AL United States)
Stevenson, B. A.
(Alabama Univ. Huntsville, AL United States)
Wu, X.
(Alabama Univ. Huntsville, AL United States)
Germany, G.
(Alabama Univ. Huntsville, AL United States)
Su, Y.-J.
(Los Alamos National Lab. NM United States)
Craven, P. D.
(NASA Marshall Space Flight Center Huntsville, AL United States)
Rich, F. J.
(Air Force Research Lab. Hanscom AFB, MA United States)
Moore, T. E.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Date Acquired
August 19, 2013
Publication Date
January 1, 2000
Subject Category
Geophysics
Meeting Information
Meeting: Space Storms and Space Weather Hazards
Location: Crete
Country: Greece
Start Date: June 19, 2000
End Date: June 29, 2000
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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