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...
| Published in: | Annales Geophysicae |
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| Main Authors: | , , , , , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Copernicus Publications
2004
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| Subjects: | |
| Online Access: | https://doi.org/10.5194/angeo-22-3503-2004 https://noa.gwlb.de/receive/cop_mods_00035054 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00035008/angeo-22-3503-2004.pdf https://angeo.copernicus.org/articles/22/3503/2004/angeo-22-3503-2004.pdf |
| 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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