I. N. Muratov, O. A. Baysalyamova, Y. M. Polishchuk
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引用次数: 0
Abstract
The article is devoted to remote studies of the size distribution of thermokarst lakes in the eastern part of the Russian Arctic. The studies are carried out in the Arctic territories of the Northeastern tundra (NET) (Yakutia) and the Chukotka tundra (CT), which are relatively homogeneous areas in terms of their natural properties (referred to here as ecoregions). Remote studies of the distribution of thermokarst lakes by area are conducted using satellite images from Kanopus-V and Sentinel-2 (with spatial resolutions of 2.1 and 20 m, respectively), obtained in the summer months of 2017–2021. The lakes are interpreted using a Sentinel-2 satellite image mosaic, which provides full coverage of the study territories; Kanopus-V images at 12 test sites; and QGIS 3.22 tools. We briefly describe the method of integration (combination) of data from Kanopus-V and Sentinel-2 images for plotting synthesized histograms of lakes distribution by their sizes. This technique allows us to get histograms of lake distribution in a very wide range of their sizes from 50 to 108 m2 in the studied Arctic ecoregions. The histogram plots show a similar behavior in both ecoregions, manifesting itself in an increase in the number of lakes as their size decreases. It is shown that the main contribution to the number of lakes in the NET is made by much larger lakes than in the CT, which may indicate a significant difference in the geocryological conditions in different Arctic territories of the eastern part of the Russian Arctic. The degree of the lake cover of the territories is assessed. It is shown that the lake cover of the NET is 7 times higher than in the studied territories of Chukotka.
期刊介绍：
Izvestiya, Atmospheric and Oceanic Physics is a journal that publishes original scientific research and review articles on vital issues in the physics of the Earth’s atmosphere and hydrosphere and climate theory. The journal presents results of recent studies of physical processes in the atmosphere and ocean that control climate, weather, and their changes. These studies have possible practical applications. The journal also gives room to the discussion of results obtained in theoretical and experimental studies in various fields of oceanic and atmospheric physics, such as the dynamics of gas and water media, interaction of the atmosphere with the ocean and land surfaces, turbulence theory, heat balance and radiation processes, remote sensing and optics of both media, natural and man-induced climate changes, and the state of the atmosphere and ocean. The journal publishes papers on research techniques used in both media, current scientific information on domestic and foreign events in the physics of the atmosphere and ocean.
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