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

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

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004angeo..22.3503s&link_type=abstract

Annales Geophysicae, vol. 22, Issue 10, pp.3503-3511

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7

Scientific paper

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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