30 citations · 51 across the 3 of their papers we have counts for
3 papers
Seasonal and diurnal dynamics of radio noise for 8-20MHz poleward-oriented mid-latitude radars
O. I. Berngardt, J. -P. St. Maurice, J. M. Ruohoniemi +1
Based on ray tracing in a smooth ionosphere described by the IRI-2016 model we have infered the seasonal-diurnal dynamics of radio noise observed by four mid-latitude HF radars. In…
Attenuation of decameter sky noise during x-ray solar flares in 2013-2017 based on the observations at midlatitude radars
Oleg I. Berngardt, J. Michael Ruohoniemi, Nozomu Nishitani +3
Based on a joint analysis of the data from 10 midlatitude decameter radars the effects are investigated during 80 x-ray flares in the period 2013-2017. For the investigation nine m…
Vertical midscale ionospheric disturbances caused by surface seismic waves based on Irkutsk chirp ionosonde data in 2011-2016
O. I. Berngardt, N. P. Perevalova, A. V. Podlesnyi +2
Based on the Irkutsk fast monostatic chirp ionosonde data we made a statistical analysis of ionospheric effects for 28 earthquakes which appeared in 2011-2016 years. These effects…