MAPPING OF THE RUSSIAN NORTHERN SEAS BOTTOM RELIEF USING DIGITAL ELEVATION MODELS

DOI: 10.24057/2414-9179-2014-1-20-479-484

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About the Authors

S. M. Koshel

M.V.Lomonosov Moscow State University, Faculty of Geography, Leninskiye Gory, Moscow 119991, Russia
Russian Federation

A. S. Koshel

M.V.Lomonosov Moscow State University, Faculty of Geography, Leninskiye Gory, Moscow 119991, Russia
Russian Federation

L. U. Ushakova

M.V.Lomonosov Moscow State University, Faculty of Geography, Leninskiye Gory, Moscow 119991, Russia
Russian Federation

Abstract

The task of the project is the design of the digital elevation models (DEM) of the bottoms of Barents Sea, Pechora Sea, and the White Sea. Accuracy (resolution) of DEMs allows for adequate delineation of morphological structures and peculiarities of the sea bottoms and the design of bathymetrical and derivative maps. DEMs of the sea bottom were compiled using data from navigation charts of different scales, where additional isobaths were drawn manually taking into account the classification features of the bottom topography forms. Next procedures were carried out: scanning of these charts, processing of scanned images, isobaths vectorization and creation of attribute tables, vector layers transformation to geographical coordinates as well editing, merging and joining of the map sheets, correction of geometry and attributes. For generation of digital model of bottom topography it is important to choose algorithm which allows for representation all of the sea bottom features expressed by isobaths in most details. The original algorithm based on fast calculation of distances to the two different nearest isobaths was used. Interpretation of isolines as vector linear objects is the main peculiarity of this algorithm. The resulted DEMs were used to design bathymetrical maps of Barents Sea of 1:2 500 000 scale, Pechora Sea of 1:1 000 000 scale, and White Sea of 1:750 000 scale. Different derivative maps were compiled based on DEM of the White Sea.

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For citation: Koshel S.M., Koshel A.S., Ushakova L.U. MAPPING OF THE RUSSIAN NORTHERN SEAS BOTTOM RELIEF USING DIGITAL ELEVATION MODELS. Proceedings of the International conference “InterCarto. InterGIS”. 2014;20:479–484 DOI: 10.24057/2414-9179-2014-1-20-479-484 (in Russian)