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RF heating in a strong auroral electrojet

Robinson, T. R. and Bond, G. and Eglitis, P. and Honary, F. and Rietveld, M. T. (1998) RF heating in a strong auroral electrojet. Advances in Space Research, 21 (5). pp. 689-692.

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Abstract

Results are reported from experiments in which the high power HF facility at Tromsø, Norway was employed to modify the Hall current region of the auroral ionosphere during periods when the electrojet became enhanced. During conditions characterised by a weak electrojet and completely underdense heating, observations indicated that RF heating leads to the expected increase in the electron temperature, inferred from EISCAT UHF radar measurements, at all altitudes between 100 and 135 km. However, under conditions characterised by a strong electrojet and slightly underdense heating, observations indicated that RF heating appeared to reduce the electrojet electron temperature, in the altitude range 100–115 km, whilst still enhancing the electron temperatures in the layers above the electrojet, in the altitude range 120–135 km. These, somewhat surprising, results are discussed in terms of a theory of the interaction between high power electromagnetic waves and irregularities excited by the Farley-Buneman instability at electrojet altitudes.

Item Type: Article
Journal or Publication Title: Advances in Space Research
Uncontrolled Keywords: heating DCS-publications-id ; art-84 ; DCS-publications-credits ; iono ; DCS-publications-personnel-id ; 5
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Departments: Faculty of Science and Technology > Engineering
Faculty of Science and Technology > Physics
ID Code: 9980
Deposited By: Dr Steve Marple
Deposited On: 24 Jun 2008 17:27
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 18:42
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/9980

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