Journal article
Plasma injection and transport in the mid-altitude polar cusp
Geophysical research letters, Vol.9(9), pp.921-924
09/1982
DOI: 10.1029/GL009i009p00921
Abstract
DE-1 hot plasma observations in the mid-altitude polar cusp have shown evidence of a significant velocity filtering phenomenon that is consistent with a latitudinally narrow region of plasma injection located at a geocentric distance of similar to 8 R sub(E) (in a dipole approximation). Plasma convection from the injection region into the polar cap results in a V-shaped log E vs. alpha sub(o) relation at geocentric distances near 4 R sub(E) . This velocity filtering effect permits the measurement of much smaller flow velocities ( similar to 10 km /sec) than have heretofore been possible with hot plasma measurements. The flows thus determined are consistent with ionospheric flows measured nearly simultaneously by the DE-2 spacecraft, although the magnitudes of the higher altitude flows are higher by a factor of 2 or more than an similar to r super(3) super(/) super(2) dipole-field mapping would predict.
Details
- Title: Subtitle
- Plasma injection and transport in the mid-altitude polar cusp
- Creators
- J. L BurchP. H Reiff - Rice UniversityJ. D Winningham - Southwest Research InstituteW B Hanson - The University of Texas at DallasC. Gurgiolo - Southwest Research InstituteJ D Menietti - Physics and AstronomyR A Hoffman - Goddard Space Flight CenterJ N Barfield - Southwest Research Institute
- Resource Type
- Journal article
- Publication Details
- Geophysical research letters, Vol.9(9), pp.921-924
- DOI
- 10.1029/GL009i009p00921
- ISSN
- 0094-8276
- eISSN
- 1944-8007
- Language
- English
- Date published
- 09/1982
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984627197002771
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