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Polar/Tide Observations of Field Aligned O(+) Flows at 5000 km Altitude over the Auroral Regions in Comparison to UVI Auroral ImagesMeasurements of thermal O(+) ion parameters from the Thermal Ion Dynamics Experiment (TIDE) on POLAR obtained near 5000 km altitude are compared with auroral images from the Ultra Violet Imager (UVI), for southern perigee passes. Ion parameters, including parallel velocity, density, and flux are combined with simultaneous auroral images to investigate relationships between their properties and the structure and brightness of the auroral forms. Results indicate field aligned upflowing O(+) ions over bright auroral regions and downward flows over dark regions. These and other relationships will be presented for several POLAR passes when both ion measurements and auroral images are observed under favorable conditions for comparison.
Document ID
19990067275
Acquisition Source
Marshall Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
Stevenson, Benjamin Adam
(Alabama Univ. Huntsville, AL United States)
Craven, Paul D.
(NASA Marshall Space Flight Center Huntsville, AL United States)
Chandler, Michael O.
(NASA Marshall Space Flight Center Huntsville, AL United States)
Moore, Thomas E.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Giles, Barbara L.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Parks, G. K.
(Washington Univ. Seattle, WA United States)
Pollock, Craig J.
(Southwest Research Inst. San Antonio, TX United States)
Date Acquired
August 19, 2013
Publication Date
January 1, 1999
Subject Category
Geophysics
Distribution Limits
Public
Copyright
Other

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