caa a22 4500 465723969 CHVBK 20180323111724.0 cr unu---uuuuu 170327e19900701xx s 000 0 eng 10.1007/BF02295933 doi (NATIONALLICENCE)springer-10.1007/BF02295933 Lower hybrid resonance spherics [Elektronische Daten] [J. Bošková, F. Jiříček, E. Titova, T. Yakhnina] Summary: After a fractional-hop whistler, a trace of limited frequency range with somewhat higher dispersion, markedly growing when approaching the lower cutoff frequency, is frequently observed on spectrograms of broadband VLF measurements made by satellites moving in the outer ionosphere. This phenomenon, which we have called "LHR spheric”, has been studied on VLF measurements made by the Interkosmos-14 satellite in the height range of 500-1700 km. The results show that LHR spherics are created by the same mechanism as LHR whistlers that sometimes appear after ducted whistlers. In this event, it is a part of the electromagnetic energy radiated by a lightning flash which, on passing trough the ionosphere, has been transformed to quasi-electrostatic resonance waves. They reach the satellite in the same way as whistler-mode waves. Transformation of a part of the energy radiated by a lightning flash to electrostatic quasi-resonance waves is possible in the ionosphere due to the scattering of the original whistler wave on small-scale turbulence. Academia, Publishing House of the Czechoslovak Academy of Sciences, 1990 Bošková J. Geophysical Institute of the Czechoslovak Acad. of Sci., Prague aut Jiříček F. Geophysical Institute of the Czechoslovak Acad. of Sci., Prague aut Titova E. Polar Geophysical Institute, Acad. Sci. of the USSR, Apatity aut Yakhnina T. Polar Geophysical Institute, Acad. Sci. of the USSR, Apatity aut Studia Geophysica et Geodaetica Kluwer Academic Publishers 34/3(1990-07-01), 269-277 0039-3169 34:3<269 1990 34 11200 https://doi.org/10.1007/BF02295933 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02295933 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bošková J. Geophysical Institute of the Czechoslovak Acad. of Sci., Prague aut NATIONALLICENCE 700 1- Jiříček F. Geophysical Institute of the Czechoslovak Acad. of Sci., Prague aut NATIONALLICENCE 700 1- Titova E. Polar Geophysical Institute, Acad. Sci. of the USSR, Apatity aut NATIONALLICENCE 700 1- Yakhnina T. Polar Geophysical Institute, Acad. Sci. of the USSR, Apatity aut NATIONALLICENCE 773 0- Studia Geophysica et Geodaetica Kluwer Academic Publishers 34/3(1990-07-01), 269-277 0039-3169 34:3<269 1990 34 11200 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer