The processes of thermodenudation in cryolithozone and the dissolved organic matter as their indication [In Russian]

• Main Author: Dvornikov, Yury
• Format: Thesis
• Language: unknown
• Published: 2016
• Subjects: permafrost
• Online Access: https://epic.awi.de/id/eprint/41217/; http://www.ikz.ru/wp-content/themes/ikz/images/dvornikov-full.pdf; https://hdl.handle.net/10013/epic.48151

Climatic and environmental fluctuations in the permafrost zone lead to activation of various cryogenic processes (ACIA 2005). This activation results in a strong impact on lake catchments and redistribution of substances from the land into the water body and therefore potential changes in biochemical composition of lake water. Therefore, lakes in the Arctic are good indicators of changing climatic and environmental conditions (Vincent et al. 1998). These indicators are expressed in both changes in thaw lake area (Smith et al. 2005), and changes in biogeochemical composition of lake water. We examine the biogeochemical properties, such as coloured dissolved organic matter (CDOM) absorption and slope, suspended matter concentration (SPM) of several thaw lakes in Russian Arctic in connection to different catchment properties: vegetation, topography, snow accumulation. To detect the spatial and temporal variability of these parameters we use the multidisciplinary comprehensive approach including field sampling, remote sensing and geographical information system (GIS) data analysis. To accumulate the geospatial data which contains our knowledge of the research area and research topic we use the geodatabase (GDB). This allows us to operatively process different models of geodata. Also we use the WebGIS service to publish the data and to make it available for the larger auditorium.