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ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa
CURRENT PROBLEMS IN REMOTE SENSING OF THE EARTH FROM SPACE

  

Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2019, Vol. 16, No. 1, pp. 95-104

Digital elevation model in the estimation of the probability of the erosion processes in the northern regions of the country

E.V. Polyakova 1 , Yu.G. Kutinov 1, 2 , A.L. Mineev 1 , Z.B. Chistova 1 
1 N.P. Laverov Federal Center for Integrated Arctic Research RAS, Arkhangelsk, Russia
2 Space Monitoring Center of the Arctic NARFU, Arkhangelsk, Russia
Accepted: 06.12.2018
DOI: 10.21046/2070-7401-2019-16-1-95-104
It is believed that exogenous processes take place slowly and are poorly reflected in relief forms in flat forest areas. However, the situation radically changes when the integrity of the vegetation cover is violated, which is inevitable with modern methods of economic development of the northern territories. In the paper, the authors estimated the probability of development of erosion processes on the basis of such geomorphometric relief parameters as the slope (Slope), LS factor (LS factor), relief dissection index (TRI) and topographic humidity index (TWI) calculated on the basis of a digital relief model Arkhangelsk region. After the procedure of generalization and cluster analysis, the study area was divided into three classes — the minimum, average and maximum values of the selected parameters. On the basis of combining the contours of cluster values of parameters in the study area, three zones were identified: with the greatest likelihood of development of erosion processes, corresponding to the zones of material demolition; with the possible manifestation of erosion processes corresponding to the transit zones of the material; with potential development of accumulative processes, corresponding to the zones of accumulation of material, including pollutants. In the accumulation zone, areas prone to flooding during floods and predisposed to waterlogging were identified. Identified on the basis of the geomorphometric analysis, the peculiarities of the territory should be taken into account when planning and implementing economic activities.
Keywords: digital elevation model, geomorphometric parameters, geomorphometric analysis, erosion processes
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