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Dynamics of Permafrost Coasts of Baydaratskaya Bay (Kara Sea) Based on Multi-Temporal Remote Sensing Dataстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Anna Novikova, Nataliya Belova, Alisa Baranskaya, Daria Aleksyutina, Alexey Maslakov, Egor Zelenin, Natalia Shabanova, Stanislav Ogorodov
- Журнал: Remote Sensing
- Том: 10
- Номер: 1481
- Год издания: 2018
- Издательство: MDPI
- Местоположение издательства: Basel, Switzerland
- DOI: 10.3390/rs10091481
- Аннотация: Arctic coasts composed of frozen deposits are extremely sensitive to climate change andhuman impact. They retreat with average rates of 1–2 m per year, depending on climatic andpermafrost conditions. In recent decades, retreat rates have shown a tendency to increase. In thispaper, we studied the coastal dynamics of two key sites (Ural and Yamal coasts) of BaydaratskayaBay, Kara Sea, where a gas pipeline had been constructed. Based on multi-temporal aerial andsatellite imagery, we identified coastal erosion rates at several time lapses, in natural conditions andunder human impact, and discussed their temporal variability. In addition to planimetric (m/yr),we calculated volumetric (m3/m/yr) retreat rates of erosional coasts using ArcticDEM. We alsoestimated the influence of geomorphology, lithology, and permafrost structure of the coasts on spatialvariations of their dynamics. Erosional coasts of the Ural key site retreat with higher mean rates(1.2 m/yr and 8.7 m3/m/yr) as compared to the Yamal key site (0.3 m/yr and 3.7 m3/m/yr) due totheir exposure to higher open sea waves, more complex lithology, higher ice content and lower coastalbluffs. Since the 1960s, coastal retreat rates have been growing on both coasts of BaydaratskayaBay; we relate this effect with Arctic climate warming. From the 1960s to 2005, such growth wasmoderate, while in 2005–2016 it became rapid, which may be explained by the enhanced wave andthermal action or by the onset of industrial development. The adjacent coastal segments, originallyaccumulative, remained relatively stable from the 1960s to 2005. After 2005, a considerable part ofthem began to retreat as a result of changing weather conditions and/or increasing human impact.
- Добавил в систему: Баранская Алиса Владиславовна