Physical-Geographical Factors of the Geodynamical Processes Activation (The Region Racha-Lechkhumi)

Abstract

Racha and Lechkhumi is a mountainous regions characterized with complex relief and geological structure. Here, nearly all kinds of hazardous geodynamical processes such as landslides, mudflows, erosion, rock flows, avalanches, karst and suffosive phenomena are observed, though the most frequent are landslides, mudflows and erosive processes and washing-off of river banks. The activation of the geodynamical process, hazard of large-scale development of gravitational phenomena are extremely increased by the fact that the whole region territory is prone to earthquakes of intensity 7-9. Among the factors taking part in geodynamical processes the most noteworthy are geological, geomorphological, climatic and anthropogenic factors. The large-scale map (1:50 000) of distribution of geodynamical processes in the Racha - Lechkhumi region, has been compiled on GIS.