Please use this identifier to cite or link to this item:
Title: Effects of high-latitude atmospheric gravity wave disturbances on artificial HF radar backscatter
Authors: Senior, A.
Kosch, M. J.
Yeoman, Tim K.
Rietveld, M. T.
McCrea, I. W.
First Published: 20-Sep-2006
Publisher: Copernicus Publications on behalf of the European Geosciences Union (EGU)
Citation: Annales Geophysicae, 2006, 24 (9), pp. 2347-2361.
Abstract: Observations of HF radar backscatter from artificial field-aligned irregularities in an ionosphere perturbed by travelling disturbances due to atmospheric gravity waves are presented. Some features of the spatio-temporal structure of the artificial radar backscatter can be explained in terms of the distortion of the ionosphere resulting from the travelling disturbances. The distorted ionosphere can allow the HF pump wave to access upper-hybrid resonance at larger distances from the transmitter than are normally observed and can also prevent the pump wave reaching this resonance at close distances. The variation in altitude of the irregularities sometimes results in a significant variation in the elevation angle of arrival of the backscattered signal at the radar implying that the radar "sees" a target moving in altitude. We suggest that this may be evidence of off-orthogonal scattering from the irregularities.
DOI Link: 10.5194/angeo-24-2347-2006
ISSN: 0992-7689
Type: Article
Rights: This paper was published as Annales Geophysicae, 2006, 24 (9), pp. 2347-2361. It is also available from Doi: 10.5194/angeo-24-2347-2006 © Author(s) 2006. This work is distributed under the Creative Commons Attribution 3.0 License.
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

Files in This Item:
File Description SizeFormat 
Effects_of_high-latitude_atmospheric_gravity_wave_....pdf869.17 kBAdobe PDFView/Open

Items in LRA are protected by copyright, with all rights reserved, unless otherwise indicated.