Abstract
Abstract The section of coast under consideration is developed on generally fine‐grained sediments with substantial ice contents and with polygonal ice wedges in some areas. Thermal abrasion is producing a range of typical coastal types. These include “cornice coasts,”; where a layer of surface peat has been left overhanging by the retreat of a body of massive ground ice, and “thermokarst slump”; coasts where the landward retreat of a slump‐scar in ice‐rich sediments and massive ground ice has outrun the zone of wave action and thermal abrasion which initiated it. Maximum rates of coastal retreat due to thermal abrasion in this area are 7–10 m per year; mean rates of erosion do not exceed 5–6 m per year.
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