Аннотация:Analysis of the maps and the reference points system installed in 2012 have allowed to reveal the high rates of coastal retreat of Aldger Island (up to 1.7 m / year), due to increase of the ice free period duration in the straits between the islands. Analysis of climate change peculiarities based on the observations of the polar station situated on the Hayes Island, supplemented by ERA Interim reanalysis also revealed an increase in surface air temperature.
Strengthening of the thermal abrasion and of the other geomorphological processes in the development of which climate plays an important role, are threatened with extinction or damage of many historical monuments of the archipelago. It complicates the statutory activities of the national park "Russian Arctic". However, in summer, when the processes of the thermal abrasion, thermal erosion and thermodenudation due to the predominance of positive temperatures are always activated, temperature parameters is changed slightly, that it can not cause significant acceleration of these processes.