Physics – Geophysics
Scientific paper
2008-01-03
Physics
Geophysics
8 pages, 7 figures
Scientific paper
In the paper we have presented a technique of determining the scattering irregularities (that cause coherent echo) layer parameters using the Irkutsk IS radar data. It is shown that our technique has necessary accuracy (for height and thickness - about 2.5 km, for aspect sensitivity - 5dB/degree). Processing of the experiments 25-26.12.1998 and 15-16.07.2000 has shown a good agreement of data calculated with the data obtained by other investigators: an average layer height is 110-120km, average layer thickness 5km, average aspect sensitivity - 15dB/degree. The investigation of the experiments with high temporal resolution allowed us to observe temporal variations of the irregularities layer parameters. The average thickness and height of the layer does not contradict the data obtained by other investigators. The investigation of the experiments with high temporal resolution allowed to detect time variations of the layer parameters. The temporal variations of the aspect sensitivity are observed by us for the first time and requires additional investigations.
Berngardt Oleg I.
Grkovich K. V.
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