Cartography
DOI: 
10.30533/0536-101X-2019-63-6-689-700
Year: 
2019
Tom: 
63
#: 
6
370
Pages: 
689–700
Abstract:
The Yenisei Delta is an important link to the Northern sea route, which, along with scientific tasks, determines the need to monitor its statement during climate warming. To study the changes in the delta at the beginning of the XXI century, a comparison of satellite images from Landsat-7 1999 and Sentinel-2B 2017 was created. To ensure the comparability of images, their geometric and brightness matching was performed. Automated coastline interpretation for each shooting date is performed by brightness quantization of near-infrared images. At the junction of the quantized images taken at different years, a raster image was obtained reflecting the appearance of water at the land (erosion of the coast) and the formation of land at the water (accumulation of sediments); this image serves as a pre-map. Due to the slow temp of the processes in the cryolithozone regions, the areas of the changed sections of the delta are small and their cartographic reproduction is possible only on a very large scale, the application of which for the delta is generally impractical. In this regard, 3 types of maps of different scales, coverage and content were proposed. Large-scale maps(1:25 000 and larger) show real areas of change, but are compiled only for some of the most dynamic sections of the delta. Maps of scale 1: 200,000 are created for the entire area of the delta (desktop version, format A-2); they show areas where changes have occurred, reflect their direction (accumulation or erosion) and intensity, determined through the average annual velocity of the coastline replacement. The overview map of the entire delta of 1: 500,000 scale (book, journal version, format A-4) reflects the sections of the coastline dynamics and the direction of changes without a quantitative characteristic of their intensity.
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Publication History
Received: 20.06.2019
Accepted: 02.12.2019
Published: 25.12.2019

Content

2019 issue 6
DOI 10.30533/0536-101X-2019-63-6