Active ionospheric experiments using high-power, high-frequency transmitters,“heaters”, to
study plasma processes in the ionosphere and magnetosphere continue to provide new …

A review is given of the current state-of-the-art of experimental studies and the theoretical
understanding of nonlinear phenomena that occur in the ionospheric F-layer irradiated by …

The paper aims to review recent advances regarding the observational and monitoring
capabilities of the ionization conditions in the Earth's upper atmosphere. The analysis spans …

We present the results of the radiotomographic imaging of the artificial ionospheric
disturbances obtained in the recent experiments on the modification of the midlatitude …

Controlled experiments involving injection of 0.5 Hz–8 kHz electromagnetic waves into the
Earth's magnetosphere have played an important role in discovering and elucidating wave …

We report on satellite observations of plasma density enhancements (ducts) in the topside
ionosphere during four HAARP/BRIOCHE campaigns during 2009–2010. Artificial ducts …

Observation of spatial VLF field structures in an artificially disturbed ionosphere is reported.
The disturbed area with horizontal sizes∼ 50 km in a quiet middle‐latitude ionosphere was …

In this paper we systematize the results of studying the characteristics of the plasma-density
ducts, which was conducted in 2005–2010 during the DEMETER-satellite operation. The …

This work presents the first results of measurements of artificial plasma disturbance
characteristics using the low‐orbit NorSat‐1 satellite, which are excited when the …

We report the first evidence of atmospheric gravity waves (AGWs) generated in the F2 region
by high‐power HF heating and subauroral polarization streams. Data come from the …