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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MDPI AG
2023-06-01
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| Series: | Geosciences |
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| Online Access: | https://www.mdpi.com/2076-3263/13/6/167 |
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| author | Marina Leibman Nina Nesterova Maxim Altukhov |
| author_facet | Marina Leibman Nina Nesterova Maxim Altukhov |
| author_sort | Marina Leibman |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-03-11T02:25:01Z |
| format | Article |
| id | doaj.art-0460a28a7a6d44bca5c746666f560901 |
| institution | Directory Open Access Journal |
| issn | 2076-3263 |
| language | English |
| last_indexed | 2024-03-11T02:25:01Z |
| publishDate | 2023-06-01 |
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| spelling | doaj.art-0460a28a7a6d44bca5c746666f5609012023-11-18T10:36:28ZengMDPI AGGeosciences2076-32632023-06-0113616710.3390/geosciences13060167Distribution and Morphometry of Thermocirques in the North of West Siberia, RussiaMarina Leibman0Nina Nesterova1Maxim Altukhov2Institute of Ecological and Agricultural Biology (X-BIO), University of Tyumen, Volodarsky Street, 6, Tyumen 625003, RussiaInstitute of Ecological and Agricultural Biology (X-BIO), University of Tyumen, Volodarsky Street, 6, Tyumen 625003, RussiaInstitute of Ecological and Agricultural Biology (X-BIO), University of Tyumen, Volodarsky Street, 6, Tyumen 625003, RussiaThe 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.https://www.mdpi.com/2076-3263/13/6/167retrogressive thaw slumpthermocirqueWest Siberiathermocirque dimensionsSentinel-2UAV survey |
| spellingShingle | Marina Leibman Nina Nesterova Maxim Altukhov Distribution and Morphometry of Thermocirques in the North of West Siberia, Russia Geosciences retrogressive thaw slump thermocirque West Siberia thermocirque dimensions Sentinel-2 UAV survey |
| title | 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_short | 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 |
| topic | retrogressive thaw slump thermocirque West Siberia thermocirque dimensions Sentinel-2 UAV survey |
| url | https://www.mdpi.com/2076-3263/13/6/167 |
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