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Angular dependence of pump-induced bottomside and topside ionospheric plasma turbulence at EISCAT

Kosch, M.J. and Mjølhus, E. and Ashrafi, M. and Rietveld, M.T. and Yeoman, T. and Nozawa, S. (2011) Angular dependence of pump-induced bottomside and topside ionospheric plasma turbulence at EISCAT. Journal of Geophysical Research, 116 (A03322). pp. 1-9. ISSN 0148-0227

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Abstract

We experimentally observe the location and angular size of the high-frequency (HF) radio window in the bottomside ionosphere, which permits radio wave propagation to the topside ionosphere, with high angular resolution at the European Incoherent Scatter (EISCAT) facility. HF pump-induced ion line enhancements were observed by the EISCAT UHF incoherent scatter radar on the ionospheric bottomside and topside. The radar zenith angle was scanned in small steps in the magnetic meridian. The HF pump duty cycle was deliberately kept low enough to minimize the growth of artificial field-aligned irregularities. The locations of the bottomside radio window and topside enhanced radar echoes are consistent with the expected position determined by ray tracing performed using the observed plasma densities.

Item Type: Article
Journal or Publication Title: Journal of Geophysical Research
Additional Information: Copyright (2011) American Geophysical Union. Further reproduction or electronic distribution is not permitted.
Uncontrolled Keywords: eiscat ; heating DCS-publications-id ; art-1031 ; DCS-publications-credits ; iono-fa ; DCS-publications-personnel-id ; 7 ; 66
Subjects: Q Science > Q Science (General)
Departments: Faculty of Science and Technology > School of Computing & Communications
Faculty of Science and Technology > Physics
ID Code: 40839
Deposited By: Dr Steve Marple
Deposited On: 31 May 2011 12:00
Refereed?: Yes
Published?: Published
Last Modified: 23 Apr 2014 17:17
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/40839

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