Morphodynamic Types of the Laptev Sea Coast: A Review

Alexander I. Kizyakov (), Alexander A. Ermolov, Alisa V. Baranskaya and Mikhail N. Grigoriev
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Alexander I. Kizyakov: Faculty of Geography, Cryolithology and Glaciology Department, Lomonosov Moscow State University, 119991 Moscow, Russia
Alexander A. Ermolov: Laboratory of Geoecology of the North, Faculty of Geography, Lomonosov Moscow State University, 119991 Moscow, Russia
Alisa V. Baranskaya: Laboratory of Geoecology of the North, Faculty of Geography, Lomonosov Moscow State University, 119991 Moscow, Russia
Mikhail N. Grigoriev: Laboratory of General Geocryology, Melnikov Permafrost Institute, Siberian Branch of Russian Academy of Sciences, 677010 Yakutsk, Russia

Land, 2023, vol. 12, issue 6, 1-20

Abstract: The Laptev Sea coast has a unique high-latitude and dynamic landscape. The presence of low-temperature permafrost (below −7 °C) and its high ice content (up to 90%) determine a wide array of permafrost landforms and features. Under the actions of thermal abrasion and thermal denudation, high rates of coastal retreat are evident within this region. Local differences in the geological structure and sea hydrodynamic conditions determine the diversity of this sea coast’s types. In this review, we present the results of a morphodynamic classification and segmentation of the Laptev Sea coast. The integrated approach used in the classification took into account the leading relief-forming processes that act upon this coastal zone. The research scale of 1:100,000 made it possible to identify and characterize the morphologies of the coast and their spatial distributions within the study area. The presented original classification can be considered to be universal for the eastern Arctic seas of Eurasia; it may be used as a basis for further scientific and applied research.

Keywords: Arctic coasts; thermal abrasion; thermal denudation; coastal dynamics; thermoterrace; permafrost; ground ice (search for similar items in EconPapers)
JEL-codes: Q15 Q2 Q24 Q28 Q5 R14 R52 (search for similar items in EconPapers)
Date: 2023
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