Coastal hazards within indigenous settlements of chukchi Peninsula

Abstract

The paper contains results of surface cartographic and geocryological analysis of geotechnical stability within built-up coastal areas of Chukchi peninsula. Comparing topographic maps and plans of the years 1960s-1990s with extra-high resolution satellite imagery of the last several years revealed coastal retreat and ravines’ growth. The deterioration of the geotechnical conditions may be caused by climate change and its consequences (e.g., expanding of open water period duration) or intensification of human activity. Based on materials of engineering surveys, including data on the properties of frozen soils, a stability forecast was made and recommendations of coastal protection were given.