Geographic information systems of ecological support for investment and contruction projects at oil and gas production fields

The paper is devoted to the development of digital thematic maps of the license area based on the spatial analysis in ArcGIS geographic information system (hereinafter GIS). To develop a digital elevation model for the Nivagalsky license area the researchers have used the following process chain: vectoring - typology development - triangulation - spatial analysis. The researchers applied Spatial Analyst module of ArcGIS for working with raster spatial models in the GRID format; topographic map at a scale of 1:100 000 as a material for the databases; and Easy Trace software package, operating in Microsoft Windows, for semi-automatic vectorization of interactive topographic map of the area. After vectorizing four sheets of the topographic map of the license area in Easy Trace we received the following coverage: - large rivers (polygon coverage); - horizontals and elevations (linear and point coverage); - vegetation (polygon coverage). The researchers have used vector coverage contours and elevations digitized from the topographic map as the initial data for the terrain model...