ИСТИНА

In this study we demonstrate Ground Penetrating Radar (GPR) results obtained in a complex of geocryological studies at CALM (Circumpolar Active Layer Monitoring) sites in 2015 -2017 located in the North of the Nenets District in the delta of the Pechora River. At both sites geological cross-sections consist of frozen sands which are a favorable media for the GPR signal. At both CALM sites, a correlation is observed between annual temperatures and the thawing depth and the moisture content in the Kashin site. At the Kumzha site in 2015 and 2017 thin lenses of frozen rocks in the active layer were observed and there weren't any in 2016. On the Kumzha site, maximum changes in ALD are observed under former roads.