Please use this identifier to cite or link to this item: http://hdl.handle.net/2381/36691
Title: A comparison of satellite scintillation measurements with HF radar backscatter characteristics
Authors: Milan, Stephen Eric
Basu, S.
Yeoman, Timothy Kenneth
Sheehan, R. E.
First Published: 21-Dec-2005
Publisher: Copernicus Publications on behalf of the European Geosciences Union
Citation: Annales Geophysicae, 2005, 23 (11), pp. 3451-3455 (5)
Abstract: We examine the correspondence between high latitude ionospheric scintillation measurements made at 250MHz with the occurrence of 10MHz HF coherent radar backscatter, on 13 and 14 December 2002. We demonstrate that when the ionospheric intersection point of the scintillation measurements is co-located with significant HF radar backscatter, the observed scintillation, quantified by the S4 index, is elevated. Conversely, when the radar indicates that backscatter is observed away from the intersection point due to movements of the auroral zone, the observed scintillation is low. This suggests that scintillation is highly location-dependent, being enhanced in the auroral zone and being lower at sub-auroral latitudes. The coexistence of scintillation and HF radar backscatter, produced by ionospheric density perturbations with scale sizes of 100s of metres and ~15 m, respectively, suggests that a broad spectrum of density fluctuations is found in the auroral zone.
DOI Link: 10.5194/angeo-23-3451-2005
ISSN: 0992-7689
eISSN: 1432-0576
Links: http://ann-geophys.net/23/3451/2005/
http://hdl.handle.net/2381/36691
Version: Publisher Version
Status: Peer-reviewed
Type: Journal Article
Rights: Copyright © Author(s) 2005. This work is distributed under the Creative Commons Attribution 3.0 License ( http://creativecommons.org/licenses/by/3.0/ ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

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