Multi-frequency HF radar measurements of artificial F-region field-aligned irregularities

We present radar backscatter power measurements using the CUTLASS HF radar at Hankasalmi, Finland from F-region field-aligned irregularities induced by HF radio pumping with the EISCAT Heating facility. A novel radar operating mode is used in which the radar frequency is rapidly swept through a numb...

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Bibliographic Details
Published in:Annales Geophysicae
Main Authors: A. Senior, N. D. Borisov, M. J. Kosch, T. K. Yeoman, F. Honary, M. T. Rietveld
Format: Article in Journal/Newspaper
Language:English
Published: Copernicus Publications 2004
Subjects:
Science
Q
Physics
QC1-999
Geophysics. Cosmic physics
QC801-809
EISCAT
Online Access:https://doi.org/10.5194/angeo-22-3503-2004
https://doaj.org/article/64e175f9e50041aab1c66fb2ceefba4a
Description
Summary:We present radar backscatter power measurements using the CUTLASS HF radar at Hankasalmi, Finland from F-region field-aligned irregularities induced by HF radio pumping with the EISCAT Heating facility. A novel radar operating mode is used in which the radar frequency is rapidly swept through a number of bands, making use of the varying ionospheric refraction to probe different heights within the heated region. We obtain height profiles of backscatter power which correspond to e -folding scale lengths of around 20km for the mean-square electron density perturbations for pump wave interaction heights in the region of 240-250km in daytime conditions. The results are in agreement with previous measurements made by other techniques. We discuss some problems with the method and suggest improvements for future experiments.

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