Amplitude Modulation of Whistlers

Sivokon’ V. P., Cherneva N. V., Druzhin G. I., Sannikov D. V.
  1. Institute of Cosmophysical Research and Radio Wave Propagation, Mirnaya 7, Paratunka, Kamchatka krai

Experimental observations of whistlers carried out in July, 2011, at the Paratunka observatory (53.02° N, 158.65° E; L = 2.3) and coinciding in time with experiments in the scope of the HAARP project
(62.30° N, 145.30° W; L = 4.2) made it possible to discover their nonstandard shape, which is most probably caused by amplitude modulated electromagnetic pulses with a duration of about 1 s and a basic frequency of ≈1.1 kHz.
 

V. P. Sivokon’, N. V. Cherneva, G. I. Druzhin, and D. V. Sannikov, Amplitude Modulation of Whistlers // Atmospheric and Oceanic Optics, 2014, Vol. 27, No. 6, pp. 511–516.