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Anomalous attenuation of extraordinary waves in ionosphere heating experiments: experimental results of 2000-2001 | | N.A. Zabotin
; G.A. Zhbankov
; E.S. Kovalenko
; V.L. Frolov
; G.P. Komrakov
; N.A. Mityakov
; E.N. Sergeev
; | | Date: |
27 Dec 2001 | | Subject: | Atmospheric and Oceanic Physics; Geophysics; Plasma Physics | physics.ao-ph physics.geo-ph physics.plasm-ph | | Affiliation: | Rostov State University, Rostov-on-Don, Russia), V.L. Frolov, G.P. Komrakov, N.A. Mityakov, E.N. Sergeev (NIRFI, Nizhni Novgorod, Russia | | Abstract: | Multiple scattering from artificial random irregularities HF-induced in the ionosphere F region causes significant attenuation of both ordinary and extraordinary radio waves together with the conventional anomalous absorption of ordinary waves due to their conversion into the plasma waves. To study in detail features of this effect, purposeful measurements of the attenuation of weak probing waves of the extraordinary polarization have been performed at the Sura heating facility. Characteristic scale lengths of the involved irregularities are ~0.1-1 km across the geomagnetic field lines. To determine the spectral characteristics of these irregularities from the extraordinary probing wave attenuation measurements, a simple procedure of the inverse problem solving has been implemented and some conclusions about the artificial irregularity features have been drawn. Theory and details of experiments have been stated earlier. This paper reports results of two experimental campaigns carried out in August 2000 and June 2001 under support of Russian Foundation for Basic Research (grants No. 99-02-17525 and No. 01-02-31008). Particularity of these experiments consisted in using of lower heating power (20-80 MW ERP). Regular character of the multiple scattering effects has been confirmed. | | Source: | arXiv, physics/0112092 | | Services: | Forum | Review | PDF | Favorites | |
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