Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2014, Vol. 11, No. 1, pp. 226-234
Morphometric relief analysis of relief Vaygach Island by Earth remote sensing data
E.V. Polyakova
1,2 , M.J. Gofarov
1,2 1 Institute of Ecological Problems of the North UD RAS, Arkhangelsk, Russia
2 Space Monitoring Center of the Arctic of the Northern (Arctic) Federal University, Arkhangelsk, Russia
Morphometric analysis of a relief is one of the most effective methods of its study. The main sources of information in a digital elevation modeling are large-scale topographic maps, instrumental field shooting and remote sensing data. Application of GIS technology and digital elevation models allows to create thematic maps of the most important morphometric parameters of a relief. This article describes morphometric analysis of the relief of Vaygach Island using the global digital elevation model ASTER GDEM 2 (NASA, METI) and derived models: hypsometric map, maps of the slope angles and slope aspects. According to these models the average height of elevations of the island is 45 m, most of the slopes are characterized as gentle slopes of the northern aspect. Also, based on the Wood J.D. method, morphometric parameters of the elevations were determined. Six types of surfaces were defined: Planar, Pit, Channel, Pass (saddle), Ridge, Peak. The main types of the surface on the island are channels and ridges associated with local rivers and river banks.
Keywords: remote sensing of Earth, digital elevation model, morphometric analysis, types of surfaces
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