Plasmasphere electron temperature structures

Details Plasmasphere electron temperature structures Plasmasphere electron temperature structures

Jan 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004adspr..34.2010k&link_type=abstract

Advances in Space Research, Volume 34, Issue 9, p. 2010-2015.

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Inspection of electron temperature (Te) profiles obtained by the thermal electron detector instrument along 5676 individual orbitsof the Akebono satellite reveal the existence of localized structures with a latitude extent of 1 3θ. The analysis was constrained to the range 2 < L < 3.2 in the northern hemisphere within the period 1991 1997. Eighty-seven well-defined structures were selected, containing a marked increase of Te at least 20% above the background level. The electron density (Ne) and the wave intensity at the upper hybrid resonance frequency, recorded by the plasma wave and sounder instrument on the same satellite, were also used in the analysis. It was found that Ne troughs and an increase of the electrostatic electron cyclotron harmonic waves perfectly co-located with the Te structures. The structures were observed at altitudes above 3000 km, as 70% of them are found between 03 and 08 h magnetic local time. While the plasma inside the structures is always warmer, the plasma pressure can be either higher or lower than outside.

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