Open AccessANALYSIS OF THE MORPHOMETRIC CHARACTERISTICS OF LAKES OF THE EASTERN SIBERIAN LOWLAND BASED ON SENTINEL-2 DATA
Author(s) -
Александр Валерьевич Волынец,
E.I. Volynets,
Irina Fedorova,
St. Petersburg Information
Publication year - 2021
Publication title -
èkologiâ. èkonomika. informatika. tom 2: geoinformacionnye tehnologii i kosmičeskij monitoring
Language(s) - English
Resource type - Journals
ISSN - 2500-123X
DOI - 10.23885/2500-123x-2021-2-6-46-52
Subject(s) - physical geography , geography , remote sensing , environmental science , cartography , geology
Processing of remote sensed data for mapping lakes and further analysis of lakes plain morphometric characteristics is considered. The study area includes two test sites located in the East Siberian Lowland. The lowland, characterized by the continuous distribution of permafrost, expressed in periglacial landscapes including thermokarst lakes, is particularly vulnerable under warming climate. An important marker for thermokarst monitoring is the morphometric characteristics of lakes widespread in the study area. A scheme was designed for processing satellite images obtained by Sentinel-2 with a 10 m spatial resolution. As a result, 397 lakes were identified in two test sites. For the selected lakes, the area, perimeter, shape index, interior edge ratio, the direction of the maximum diameter, and the shape factor of the polygon were calculated. The purpose of the statistical analysis was to check the hypothesis about the similarity of the plain morphometric characteristics of the lakes in the YanoIndigirskaya and Kolyma lowlands. For most indicators, the hypothesis of the equality of the mean values of the morphometric characteristics was not confirmed. However, the differences in statistical parameters are not large. The hypothesis of the equality is confirmed for the interior edge ratio of the polygon. The dependence of the obtained indicators on the type of landscape, terrain a