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Global Diagnostics of Ionospheric Absorption During X-Ray Solar Flares Based on 8- to 20-MHz Noise Measured by Over-the-Horizon Radars

Lester, M.; Marchaudon, A.; Marcucci, M. F. +9 more

An analysis of noise attenuation during 80 solar flares between 2013 and 2017 was carried out at frequencies 8-20 MHz using 34 Super Dual Auroral Radar Network radars and the EKB ISTP SB RAS radar. The attenuation was determined on the basis of noise measurements performed by the radars during the intervals between transmitting periods. The locati…