Hydrological aspects of bogs formation in taiga zone of Western Siberia

Abstract

Urgency: Absence of satisfactory answers to a lot of questions of interrelations between formation of bogs, water and sediment flow, change of river channels limits the reliability of long term forecasts of environmental changes in boggy territories of Western Siberia and estimations of anthropogenous influence on bog ecosystems. It results in many cases in amplification of water negative influence and occurrence of extreme situations, including the objects of an oil-and-gas complex. The purpose of the study is to reveal the most common mechanisms of river and marsh systems interference described by prevalence of substance erosion and accumulation processes opposite in their influence on environment. Methods of research: a geographic-hydrological method, mathematical modelling of hydrological processes. Results and abstracts: The authors have revealed and quantitatively proved the mechanism of interrelation between the processes ofwater runoff formation, occurrence and evolution of bogs in taiga zone of Western Siberia (at a level of basins of river of the first - third orders). Currently under conditions of superfluous or normal humidifying the bogging begins in conditions of the complicated water runoff on a background of superfluous humidifying. The authors found out that not only the absolute values of a runoff, but also its variability both within the limits of the long term period, and inside one year play the important role. The conclusion was drawn that economic activities connected to priority development of an oil-and-gas complex, can promote bogging owing to deterioration of a superficial and earth drain on sites at engineering systems and constructions.

Keywords

• hydrological analysis
• hydrological processes
• formation of bogs
• Western Siberia
• water balance