ИСТИНА

Fedorov et al. (2014) have shown that SRS IAR are predominantly generated by simple reflection. In the time domain their waveforms correspond to a pair of subsequent pulses. The present study develops the results of the technique of source localization, suggested by Nikolaenko et al. (2014). For that, we use polarization parameters of pulse pairs in the IAR frequency range to localize the source of these pulses. The data analyzed was recorded at a network of search-coil magnetometers in Canada. The data processing includes detection and synchronization of over-threshold pulse sequences at three or more points, preliminary localization of the source, and an iteration procedure to localize a more precise source position. Local thunderstorm activity as a possible source of these pulse sequences is discussed. Acknowledgement The study is partly supported by the RFBR grant 18-05-00108 А References Fedorov, E., A. Schekotov, Y. Hobara, R. Nakamura, N. Yagova, and M. Hayakawa (2014), The origin of spectral resonance structures of the ionospheric Alfvén resonator. Single high-altitude reflection or resonant cavity excitation?, J. Geophys. Res. Space Physics, 119, 3117–3129, doi:10.1002/2013JA019428. Nickolaenko A. P., Schekotov A. Y., Hayakawa M., Hobara Y., Satori G., Bor J., Neska M., Multi-point detection of the ELF Transient caused by the gamma flare of December 27, 2004, 57(2), 125-140, 2014.