DOI: 
10.22389/0016-7126-2020-955-1-34-47
1 Kravtsovа V.I.
2 Vakhnina O.V.
Year: 
№: 
955
Pages: 
34-47

Lomonosov Moscow State University (MSU)

1, 
2, 
Abstract:
Previous studies of the Yenisei delta dynamics in the second half of the twentieth century showed a slight increase in its area, prevailing over erosion. In this work, images from Landsat-7 satellites of 1999 and Sentinel-2B in 2017 were used to study the changes in the first decades of the 21st century. A pre-map was obtained for them showing the land formation areas at the water site (sediment accumulation) and appearing water instead of land (erosion of the coast). Small areas of these changes can’t be displayed on observing maps, but the characteristics of the accumulation and erosion intensity is possible, corresponding to the average annual velocity of the coastline moving. Such maps, compiled in the scale of 1: 200 000, are presented in the article for the main areas of the delta. The maps show that at the beginning of the XXI century the trend of the delta development changed, from a weak increase to erosion, the area of which exceeded the accumulation areas by 9 times for 18 years. The erosion encompasses both the sea edge of the delta and the coasts of the main branches. The observed changes are quite consistent with the ones expected during the climate warming.
The reported study was created by RFBR project 18-05-60221.
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Citation:
Kravtsovа V.I., 
Vakhnina O.V., 
(2020) Investigations of the Yenisei River delta dynamics in multi-temporal satellite images. Geodesy and cartography = Geodezia i Kartografia, 81(1), pp. 34-47. (In Russian). DOI: 10.22389/0016-7126-2020-955-1-34-47
Publication History
Received: 28.05.2019
Accepted: 11.07.2019
Published: 20.02.2020

Content

2020 January DOI:
10.22389/0016-7126-2020-955-1

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