Distribution and Morphometry of Thermocirques in the North of West Siberia, Russia

The Arctic zone of West Siberia (Yamal and Gydan peninsulas) is an area with continuous permafrost and tabular ground ice close to the surface, active thermodenudation, and related landforms: retrogressive thaw slumps (RTS); in Russian referred to as thermocirques (TC). The dimensions of most TCs ha...

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Published in:Geosciences
Main Authors: Marina Leibman, Nina Nesterova, Maxim Altukhov
Format: Text
Language:English
Published: Multidisciplinary Digital Publishing Institute 2023
Subjects:
Ice
Online Access:https://doi.org/10.3390/geosciences13060167
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spelling ftmdpi:oai:mdpi.com:/2076-3263/13/6/167/ 2023-08-20T04:04:42+02:00 Distribution and Morphometry of Thermocirques in the North of West Siberia, Russia Marina Leibman Nina Nesterova Maxim Altukhov agris 2023-06-03 application/pdf https://doi.org/10.3390/geosciences13060167 EN eng Multidisciplinary Digital Publishing Institute https://dx.doi.org/10.3390/geosciences13060167 https://creativecommons.org/licenses/by/4.0/ Geosciences; Volume 13; Issue 6; Pages: 167 retrogressive thaw slump thermocirque West Siberia thermocirque dimensions Sentinel-2 UAV survey WorldView 2 WorldView 3 Landsat ArcticDEM Text 2023 ftmdpi https://doi.org/10.3390/geosciences13060167 2023-08-01T10:21:07Z The Arctic zone of West Siberia (Yamal and Gydan peninsulas) is an area with continuous permafrost and tabular ground ice close to the surface, active thermodenudation, and related landforms: retrogressive thaw slumps (RTS); in Russian referred to as thermocirques (TC). The dimensions of most TCs have not been determined so far. We use Sentinel 2 imagery to measure each TC area ranging from 0.55 to 38 ha with a median of 2.5 ha. Around 95% of TCs have an area of less than 10 ha. The largest areas are gained due to the merging of several neighboring TCs. The ArcticDEM is used to determine TC edge elevation and slope angle. In general, the Median TC of the Yamal peninsula has an area of 1.8 ha, an elevation of the edge of 17.7 m, and a slope angle of 2.5°. The Median TC of the Gydan peninsula has an area of 2.6 ha, elevation of the edge of 29.4 m, and slope angle of 3°. TCs of the Gydan peninsula occupy higher positions and slightly steeper slopes compared to TCs of the Yamal peninsula. The ranges of the median and the largest TC areas are consistent with the reported RTS dimensions in North America. Text Arctic Ice permafrost Yamal Peninsula Siberia MDPI Open Access Publishing Arctic Yamal Peninsula ENVELOPE(69.873,69.873,70.816,70.816) Geosciences 13 6 167
institution Open Polar
collection MDPI Open Access Publishing
op_collection_id ftmdpi
language English
topic retrogressive thaw slump
thermocirque
West Siberia
thermocirque dimensions
Sentinel-2
UAV survey
WorldView 2
WorldView 3
Landsat
ArcticDEM
spellingShingle retrogressive thaw slump
thermocirque
West Siberia
thermocirque dimensions
Sentinel-2
UAV survey
WorldView 2
WorldView 3
Landsat
ArcticDEM
Marina Leibman
Nina Nesterova
Maxim Altukhov
Distribution and Morphometry of Thermocirques in the North of West Siberia, Russia
topic_facet retrogressive thaw slump
thermocirque
West Siberia
thermocirque dimensions
Sentinel-2
UAV survey
WorldView 2
WorldView 3
Landsat
ArcticDEM
description The Arctic zone of West Siberia (Yamal and Gydan peninsulas) is an area with continuous permafrost and tabular ground ice close to the surface, active thermodenudation, and related landforms: retrogressive thaw slumps (RTS); in Russian referred to as thermocirques (TC). The dimensions of most TCs have not been determined so far. We use Sentinel 2 imagery to measure each TC area ranging from 0.55 to 38 ha with a median of 2.5 ha. Around 95% of TCs have an area of less than 10 ha. The largest areas are gained due to the merging of several neighboring TCs. The ArcticDEM is used to determine TC edge elevation and slope angle. In general, the Median TC of the Yamal peninsula has an area of 1.8 ha, an elevation of the edge of 17.7 m, and a slope angle of 2.5°. The Median TC of the Gydan peninsula has an area of 2.6 ha, elevation of the edge of 29.4 m, and slope angle of 3°. TCs of the Gydan peninsula occupy higher positions and slightly steeper slopes compared to TCs of the Yamal peninsula. The ranges of the median and the largest TC areas are consistent with the reported RTS dimensions in North America.
format Text
author Marina Leibman
Nina Nesterova
Maxim Altukhov
author_facet Marina Leibman
Nina Nesterova
Maxim Altukhov
author_sort Marina Leibman
title Distribution and Morphometry of Thermocirques in the North of West Siberia, Russia
title_short Distribution and Morphometry of Thermocirques in the North of West Siberia, Russia
title_full Distribution and Morphometry of Thermocirques in the North of West Siberia, Russia
title_fullStr Distribution and Morphometry of Thermocirques in the North of West Siberia, Russia
title_full_unstemmed Distribution and Morphometry of Thermocirques in the North of West Siberia, Russia
title_sort distribution and morphometry of thermocirques in the north of west siberia, russia
publisher Multidisciplinary Digital Publishing Institute
publishDate 2023
url https://doi.org/10.3390/geosciences13060167
op_coverage agris
long_lat ENVELOPE(69.873,69.873,70.816,70.816)
geographic Arctic
Yamal Peninsula
geographic_facet Arctic
Yamal Peninsula
genre Arctic
Ice
permafrost
Yamal Peninsula
Siberia
genre_facet Arctic
Ice
permafrost
Yamal Peninsula
Siberia
op_source Geosciences; Volume 13; Issue 6; Pages: 167
op_relation https://dx.doi.org/10.3390/geosciences13060167
op_rights https://creativecommons.org/licenses/by/4.0/
op_doi https://doi.org/10.3390/geosciences13060167
container_title Geosciences
container_volume 13
container_issue 6
container_start_page 167
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