Ion-neutral coupling in the high-latitude F region Evaluation of ion heating terms from Dynamics Explorer 2

Details Ion-neutral coupling in the high-latitude F region Evaluation of ion heating terms from Dynamics Explorer 2 Ion-neutral coupling in the high-latitude F region Evaluation of ion heating terms from Dynamics Explorer 2

Sep 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984jgr....89.7495k&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 89, Sept. 1, 1984, p. 7495-7508.

Other

103

F Region, Ion Temperature, Ionospheric Heating, Ionospheric Ion Density, Neutral Atmospheres, Plasma Interactions, Dynamics Explorer 2 Satellite, Energy Distribution, Geomagnetism, Polar Regions, Satellite-Borne Instruments

Scientific paper

Ion and neutral motions in the high latitude F layer were studied simultaneously during six passes of the Dynamics Explorer 2 spacecraft. The passes were made over the south polar cap in October 1981. An ion energy balance equation was defined to express the exchange of energy between the F layer and other atmospheric constituents. A momentum equation expressed the momentum exchange between the species. An approximate form of the energy balance equation was also formulated. The time constant for ion-neutral collisional momentum transfer significantly affected Joule heating in the F layer. Regions of large velocity disparities and ion temperature enhancements were detected as hot spots. The results indicate that a feedback mechanism may arise in terms of neutral compositional changes and enhanced ionospheric recombination. The approximate equation furnished values for ion heating rates which matched the data.

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