LHR whistlers |
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| Authors: | J Bo?ková F Ji?í?ek P T?íska D R Shklyar E E Titova |
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| Institution: | (1) Geophysical Institute of the Czechosl. Acad. Sci., Prague;(2) Inst. of Terr. Magnetism, Ionosphere and Radiowave Propagation, Acad. Sci. of the USSR, Troitsk;(3) Polar Geophysical Institute, Acad. Sci. of the USSR, Apatity |
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| Abstract: | Summary A type of whistler with unusual dispersion near the LHR frequency has been found, in a number of VLF experiments aboard low-orbiting
Intercosmos satellites. These “LHR whistlers” are thought to be the result of transformation of the common whistler mode waves
into quasi-electrostatic waves, as they propagate near the LHR frequency. The mechanism generating the LHR whistlers for downgoing
whistler waves is discussed. It is shown how the characteristic features of the LHR whistlers reflect the dynamic changes
in the outer ionosphere at midlatitudes.
Резюме В ря?rt;е ОНЧ эксnерuменmов, выnолненых нa нuзколеmящuх сnуmнuкaх серuu „Инmеркосмос“, был нaŭ?rt;ен mun свuсmов с необычноŭ
?rt;uсnерсuеŭ вблuзu чaсmоmы нuжне?rt;о ?rt;uбрu?rt;но?rt;о резонaнсa (НГР). Эmu „НГР свuсmы“ рaссмamрuвaюmся кaк резульmam
mрaнсформaцuu обычных свuсmовых волн в квaзuэлекmросmamuческuе волны в nроцессе рaсnросmрaненuя вблuзu чaсmоmы НГР. Обсуж?rt;aеmся
мехaнuзм вознuкновенuя НГР свuсmов ?rt;ля свuсmовых волн, рaсnросmрaняющuхся оm большuх высоm к Земле. Покaзaно, кaкuм обрaзом
хaрaкmерные особенносmu НГР свuсmов оmрaжaюm ?rt;uнaмuческuе uзмененuя во внещнеŭ uоносфере сре?rt;нuх шuроm.
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