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Vol. 1 (1998 year), No. 3

Ratkin N.E., Asming V.E., Koshkin V.V.
Influence of Natural Local Factors on Snow Cover Pollution (on the Example of the Pechenga Area)

The purpose of the work is the accumulation account method of sulphate, nickel and copper in the snow of the local pollution zone of the industrial complex "Pechenganikel". The basic task of studying character of formation and pollution of snow cover in the territory having crossed relief has been solved. On the basis of five years' experiment the model of aerotechnogenic pollution of the snow cover in landscapes of the local zone has been developed. According to the data of annual emissions of the industrial complex, distribution of wind and amount of deposits on the meteostation "Nikel" for a winter period the model provides:

• Representation of the material in the form of isoline display of modern, retrospective and perspective accumulation of water stock, sulphates, nickel and copper in snow for any winter period, and also integrated accumulation of polluting substances and water stock with an increasing result from the moment of emission source occurrence;
• calculation of water stock and polluter accumulation on the area of drainage pools and other natural and territorial complexes;
• the reverse task decision: snow pollution measuring in control points to define emission of sulphate, nickel and copper from the enterprise.

The model can be applied in other northern areas of the Russian Federation with similar physico-geographical and climatic conditions. The model basis are dependences of the deposit amount from water stock in the same landscapes and also dependences of snow polluter contents from a relief and distance up to a source of emissions.

(in Russian, стр.10, fig. 5, tables. 8, ref 17, MS Word 95, MS Word 95 283 Kb)

Vol. 3 (2000 year), No. 1

Ratkin N.E.
Quantitative estimation of the substance aerotechnogenic flow on the surface by the calculation method

The possibility of applying the method of calculation of the contents of sulphates, nickel and copper in a snow cover around the "Pechenganickel" plant to other territories has been considered in the paper. The connections of atmospheric fallouts of the substances during the warm period of the year and the whole year with their coming to the covering surface during a winter are considered, the borders of impact zones are obtained and the relief influence on the quantitative characteristics of atmospheric fallouts is analysed.

(in Russian, стр.20, fig. 4, tables. 19, ref 23, MS Word 95, MS Word 95 302 Kb)

Vol. 12 (2009 year), No. 3

Dauvalter V.A., Kashulin N.A., Sandimirov S.S., Ratkin N.E.
Evaluation of heavy metals (Ni and Cu) balance of the water-shed area of subarctic lake (case study of the Chunozero Lake)

The typical area with widespread rocks of the "gabbro" mineral association (Pl+Amp) within the Fedorova Tundra intrusive has been studied. It has been shown that "gabbro" is a result of autometamorphic reworking of rocks with the three-mineral gabbronoritic association – Pl+Opx+Cpx.

(in Russian, стр.9, fig. 7, tables. 2, ref 22, Adobe PDF, Adobe PDF 0 Kb)