Seasonal variations of the underlying surface in the cryolithozone and their influence on the parameters of atmospheric electricity and the propagation of VLF radio waves

摘要

A comparative analysis of seasonal variations in the parameters of the underlying surface under the conditions of the cryolithozone at the SHICRA SB RAS polygon near Yakutsk, far from industrial interference, was performed. Seasonal variations of the parameters of atmospheric electricity and the VLF radio waves propagation from 2009 to 2018 are presented. It was obtained that for the summer season the ground electric field has a recession due to summer defrosting of the upper layer of permafrost and changes in the conductivity of the underlying surface and an increase in permeability for radon output. In the seasonal variation of the VLF radio navigation signals received in Yakutsk in the summer season, there is also a slight decrease due to a forest cover conductivity changing.