SPATIAL STRUCTURE OF SNOW COVER CONTAMINATION IN UFA CITY
The particularities of snow cover pollution as a reflection of air condition in Ufa city are considered. The special attention is paid to the specifics of snow cover being the storage of polluting substances, as well as to the coincidence of anomalies of traditional pollutants and heavy metals. The authors note the actuality of this investigation for Ufa that falls in the category of urban conglomerates of "center" type with the multielement geochemical flows and dispersion halos. The geochemical specificity of the city is stressed. The mapping of pollution halos in the city is carried using ArcGis system, and the pollution structure is analyzed by the example of plumbum and mercury mixtures. The morphology of revealed anomalous zones is defined; their centers and peripheral areas are characterized; their sizes are established. It is noted that the contours of geochemical anomalies are connected with the physiographic particularities of the given territory, i.e. with the unique location of mezorelief forms, the prevailing wind directions versus seasons of the year and the predominance of unfavorable meteorological conditions. The necessity for the joint application of several GIS-technologies is emphasized.