Assessment of Sensitivity of River Channel Patterns to Possible Climate Changes in the Northern European Russia

摘要

The method of V. V. Romashin has been used to assess the sensitivity of channel processes to climatic changes in the northern European Russia. In this method, a criterion for the river channel pattern is a product of the annual river discharge and valley slope. Present climate changes for the northern European Russia have been considered. Trends of climate changes have been obtained, and homogeneous regions with the similar kinds of changes have been delineated based on analysis of observed time series of annual and maximum river runoff, annual precipitation, and air temperature. Assessment of sensitivity of the fluvial processes to climatic changes in the form of possible replacement of channel types has been performed using some generalized scenarios of river runoff changes as well as the obtained climate changes in each extracted homogeneous region.