METHOD OF DIGITAL GEOMORPHOLOGIC MAP OF MOSCOW COMPILATION

Abstract

The digital modeling includes: 1) digitizing of the paper-based environmental map (i. e. scanning and vectorization of each list of the map); 2) transformation of the obtained seamless layer in order to fit it with the elements of the Moscow digital base map, made by Mosgorgeotrest (scale 1:10 000); 3) vector data verification. The resulting vector polygon data layer (modeled in AcrInfo, ESRI, Inc., USA) consists of more than 3 000 polygons with attributes corresponding to the map legend. The map legend shows: 1) genetic types of relief and landforms; 2) hazardous engineering-geological processes which have already happened or may happen soon. The scale of the created digital environmental map is 1:50 000. An additional component of the digital eco-geomorphologic model of Moscow is detailed digital elevation model (DEM). 3D Analyst (ArcGIS) was used to visualize DEM in 3D-pictures, to extract simple derivatives (hypsometry, slope and aspect, plan and profile curvature, roughness). These data allowed us to create some geomorphic maps of the test site - the territory of Moscow protected area "Vorobyovy Gory". Statistical analysis of the geomorphic data distribution was fulfilled. The quality of the model not only provides the acquiring knowledge of the urban agglomeration and fulfilling the complex of its eco-geo- morphological estimations, but also helps the solution of urban planning and management.