年間 12 号発行
ISSN 印刷: 0040-2508
ISSN オンライン: 1943-6009
Indexed in
ELF PULSE AT KARYMSHINO ASSOCIATED WITH GAMMA RAY FLARE OF 27.12.2004
要約
We examine electromagnetic pulse associated with an abrupt change of the height of the Earth-ionosphere cavity that was caused by intense gamma ray flare on 21:30:26.5 UT on December 27, 2004. We demonstrate that parameters of observed extremely low frequency (ELF) radio pulse correspond to model expectations: the wave arrival angle is close to the direction toward the epicenter of ionosphere modification, the pulsed waveform is similar to that computed, and its amplitude exceeds the level of the regular Schumann resonance background by a few times. Simultaneously, the pulse onset at the Karymshino observatory (52,827° N, 158,132° E) is ~ 0.16 s in advance relative to the published time of modification in the VLF records.