Coastal Retreat Due to Thermodenudation on the Yugorsky Peninsula, Russia during the Last Decade, Update since 2001–2010
| Autor: | Yekaterina Zhdanova, Marina Leibman, M.V. Zimin, Alexander I. Kizyakov, A.V. Sonyushkin |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
geography
Series (stratigraphy) photogrammetric processing geography.geographical_feature_category Landform Science thermocirque multi-temporal remote sensing data Kara seacoast Ground ice Weather station thermodenudation Peninsula permafrost processes retrogressive thaw slump General Earth and Planetary Sciences Physical geography Low correlation Geology tabular ground ice |
| Zdroj: | Remote Sensing Volume 13 Issue 20 Pages: 4042 Remote Sensing, Vol 13, Iss 4042, p 4042 (2021) |
| ISSN: | 2072-4292 |
| DOI: | 10.3390/rs13204042 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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