| Abstract |
It is well-known that Kamchatka represents one of the most geodynamically active regions of the World. But along with it, its territory is characterized by wide variety of natural hazards; many of them initiate or significantly increase occurrence probability of the others. In particular, the earthquakes initiate tsunamis, accompany or forestall volcanic eruptions, activate slope instability processes such as collapses, landslides and avalanches. The Valley of the Geysers area is one of the most hazardous on Kamchatka due to intensive development of landslide processes within its territory. The study of landslide generating factors is not less important than investigation of landslides themselves. In this study it is necessary to regard the whole complex of processes, controlling the slope instability development: its geological structure, relief, recent tectonic motions, seismic and volcanic activity of the region, climate and meteorological data, geological, geothermal and geocryology conditions, vegetation and soils, economical activity. Weight of geodynamic factors in estimation of landslides and landfalls risk significantly increases in regions with high seismic and geodynamic activity, on Kamchatka particularly. The geodynamic risk factors for landslide, which occurred on June 3, 2007 in the Valley of the Geysers (fig. 1, 2) are presented in this paper: - Rates of present-day regional neotectonic motions, - Tectonics and main faults, - Volcanic activity of Kikhpinych Volcano, - Present-day local earth crust motions, - Hydrothermal activity, - Largest Earthquakes and regional seismicity. |