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ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa
CURRENT PROBLEMS IN REMOTE SENSING OF THE EARTH FROM SPACE

  

Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2015, Vol. 12, No. 1, pp. 51-59

Pulse component variations of lightning radio noise and signals by radio observations in Yakutsk from 2001 to 2013

V.I. Kozlov1 , A.A. Korsakov1  , V.A. Mullayarov1  , L.D. Tarabukina1  , V.P. Mel’chinov2 
1 Yu.G. Shafer Institute of Cosmophysical Research and Aeronomy SB RAS, Yakutsk, Russia
2 Physical-Technical Institute of M.K. Ammosov North-Eastern Federal University, Yakutsk, Russia
Very Low Frequency range lightning generated magnetic component of pulsed natural radio noise (atmospherics) statistical characteristics registered in Yakutsk in 2001 – 2013 are presented. In diurnal pulse variations three extremes are distingiushed: 8-12 UT - maximum contribution of thunderstorm activity in East Asia; 15-19 UT - maximum contribution of thunderstorms in the Caucasus foothills region, the European territory of Russia (ETR) and the African world thunderstorm center; 3-7 UT - maximum contribution of thunderstorm activity in the Pacific Ocean. Diurnal variation of atmospherics, except summer months, has the form of a half-wave with a peak at 15-19 hours (UT). In the summer months, the daily variation has an additional peak at 9 UT. The variation for daily maximum at ~ 17 h (UT) between summer and winter is 230%, while at ~ 9 hours (UT) - 2600%, which is determined by the contribution of local storm activity. Seasonal atmospherics flux variation is given by a half-wave with an extended peak in summer. Atmospherics quantity and solar activity are in counter phase. Radio navigation signals variations registered in 2009-2013 are discussed and compared with atmospherics flux variations received from similar directions. Novosibirsk - Yakutsk path attenuation over the solar cycle changes 1.2 times. With signal propagation taken into account, the ratio of atmospherics number in the solar activity minimum (2009) and maximum (2013) is about 159%.
Keywords: atmospherics flux, lightning, thunderstorm, solar activity, radio noise, radio station, radio wave propagation
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