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AbstractAbstract
[en] VLF radio waves passing through polar caps and auroral zones are subjected to disturbances in phase and electric field intensity because of the abnormal ionization of lower ionosphere due to solar cosmic radiation, etc.. While HF radio waves are easily absorbed, VLF radio waves can monitor the disturbance as phase fluctuation in spite of varying electric field intensity. Remarkable phase advance was seen in NAA-17.8 kHz passing through polar caps and ALDRA-13.6 kHz and GBR-16.0 kHz through high-latitude auroral zones at the time of the solar-cap disturbance due to proton-flare solar radiation. (Mori, K.)
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Source
Tokyo Univ. (Japan). Inst. of Space and Aeronautical Science; p. 72-78; 1977; p. 72-78; Tokyo Univ. Inst. of Space and Aeronautical Science; Tokyo, Japan; IMS symposium; Tokyo, Japan; 14 - 16 Jul 1977
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Book
Literature Type
Conference
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