THE MULTIFRACTAL CHARACTER OF LINEAMENT DENSITY ON THE KOLA PENINSULA

Analysis of data on the lineament network of the Kola Peninsula obtained through interpretation of space images at different scales provides an indication of the multifractality of lineament densities and the possibility of the geologic interpretation of the spectrum of fractal dimensions. The invariance of the distribution of densities of images of the lineament network at small and large scales reveals the scaling properties of these structural elements, and objectively reflects the heterogeneity of the geologic medium.     

Unique Surges of Medvezhy Glacier

Doklady Earth Sciences - The results of 20 years of field data (1963–1982) and 50 years of remote observations (1963–2012) on Medvezhy Glacier in the Pamirs by the Institute of...     

REMOTE SENSING METHODS IN RESEARCH ON RIVER DRAINAGE BASINS

The concept that river drainage basins can be considered appropriate spatial units in assessment of human environmental impacts is examined. Applications of remote sensing imagery in the study of changes occurring within a particular basin—the Sit' River in European Russia—are investigated and multispectral aerial photography is used to determine the structure of biotic communities. Regionalization and areal cataloguing of these communities are the basis for specific conclusions regarding the principal sources of entry of nutrients and pollutants into the basin. Three image feature classification methods used to identify such communities (K-means (unsupervised) based on principal components analysis, supervised using principal components analysis, and data compression and subsequent identification of principal components) are compared in terms of effectiveness (numbers of mixed and/or unclassified pixels). Translated by Edward Torrey, Alexandria, VA 22308 from: Izvestiya Akademii Nauk, seriya geograficheskaya, 1994, No. 1, pp. 126-140.     

Cascades of subglacial lakes in Antarctica

Progress in understanding cascades of subglacial lakes in Antarctica and in the dynamics of their surface was derived using satellite laser altimetry measurements ICESat. The morphological and dynamical signs indicate subglacial lakes and the positions of their shore lines. Oscillations of surfaces in transition zones are periodic, while the changes in surface elevation above subglacial lakes are random. The pattern of surface displacements above cascades of subglacial lakes in Antarctica and their transition zones as similar. In the sense of technology, this paper initiates the method of mapping subglacial lakes based on satellite laser measurements of elevation.     

Punctuated equilibrium of the surface above subglacial Lake Vostok in antarctica

Progress in understanding the surface dynamics above the subglacial Lake Vostok is achieved owing to use of the ICESat satellite laser elevation measurements, which enabled us to determine surface fluctuations with precision up to 3 cm. A new idea on punctuated equilibrium of the surface above Lake Vostok is elaborated; this idea is concluded in irregular, sharp vertical displacements of the ice surface by up to 40 cm. Deformation of the surface is accompanied with a common raising or lowering, and with local vertical displacements up to 20 cm in amplitude. It has been proved experimentally that snow transport on the surface above the lake causes only redistribution of snow and forms fractal structures that do not have any effect on surface deformation. The form of the surface is not an inclined plane due to many bends that are particularly related to ice flowing on the lake water area.