Coastal Retreat Due to Thermodenudation on the Yugorsky Peninsula, Russia during the Last Decade, Update since 2001–2010

Remote Sensing

Alexander Kizyakov¹  Mikhail Zimin²  Marina Leibman³  Yekaterina Zhdanova⁴  Anton Sonyushkin⁵ 

[1] Cryolithology and Glaciology Department, Faculty of Geography, Lomonosov Moscow State University, GSP-1, Leninskie Gory, 119991 Moscow, Russia;Laboratory of Aerospace Methods, Department of Cartography and Geoinformatics, Faculty of Geography, Lomonosov Moscow State University, 119991 Moscow, Russia;Laboratory of Cryogenic Processes, Earth Cryosphere Institute, Tyumen Scientific Centre SB RAS, Malygin Street, 86, P.O. Box 1230, 625000 Tyumen, Russia;Meteorology and Climatology Department, Faculty of Geography, Lomonosov Moscow State University, 119991 Moscow, Russia;OpenDataBox, 115573 Moscow, Russia;

关键词: photogrammetric processing;    multi-temporal remote sensing data;    permafrost processes;    retrogressive thaw slump;    tabular ground ice;    thermocirque;   

DOI  :  10.3390/rs13204042

来源: DOAJ

【 摘 要 】

Thermodenudation on the Kara seacoast, the Yugorsky Peninsula, Russia, is studied by analyzing remote-sensing data. Landforms resulting from the thaw of tabular ground ice, referred to as thermocirques, are formed due to polycyclic retrogressive thaw slumps, during the last decade 2010–2020. We calculate the retreat rate of the thermocirque edge using various statistical approaches. We compared thermocirque outlines by the end of each time interval defined by the dates of available very-high-resolution imagery. Six thermocirques within two key sites on the Yugorsky peninsula are monitored. We correlate each of the thermocirque edge’s retreat rates to various climatic parameters obtained at the Amderma weather station to understand the interrelation patterns better. As a result, we find a very low correlation between the retreat rate of each thermocirque and summer warmth, rainfall, and wave action. In general, the activity of thermodenudation decreases in time from the previous decade (2001–2010) to 2010–2020, and from 2010 towards 2020, although the summer warmth trend increases dramatically. A single thermocirque or series of thermocirques expand in response to environmental and geological factors in coastal retreat caused by thermodenudation.

【 授权许可】

Unknown