Nivation is an intensive thermogenous process of rock's destruction acts near snow banks in spring and summer| it as widespread in mountains and high latitudes. The nivation results from the solar energy which causes sharp contrast in temperatures
of bare rock surface near the snow| surface under the snow and air near the surface. The intensity of nivation, the rate of rock's destruction is controlled by amplitude and frequency of the temperatures fluctuations within the active layer near the snow's
boundary, effective heat capacity and coefficient of thermal expansion. Being a thermogenous process the nivation acts not only near the snow banks but glaciers and icing as well. (Ed.).
Snow-avalanche hazards in glacier national park, Montana : meteorologic and climatologic aspects
Recent research has established strong correlations between meteorologic data, snowpack stratigraphy, and snow avalanche occurrence. Based on several years of data collection on weather conditions and avalanche activity in the San Juan Mountains
Weathering trends in fine debris beneath a snow patch, Niwot Ridge, Front Range, Colorado
-20 cm. Spatial variations in eolian additions and meltwater produce complex patterns in chemical weathering of fines beneath large snow patches, although the nature of clay-mineral change is typical of humid, temperate, mid-latitude environments.
Climatic relationships of permafrost zones in areas of low winter snow-cover
In areas with under 50cm snow cover in winter, the permafrost zones are defined by the freezing indices and thawing indices. The warmer boundary of the zone of continuous permafrost traverses the mean annual air temperature (MAAT). The boundary
parameters, especially precipitation through the effects of snow cover. The effects of precipitation poor summers in 1985-87 and the colder than normal and snow poor winters of 1985 and 1987 were instrumental in intensifying the effects of seasonal frost
circulation pattern in the extratropical Northern Hemisphere. Evidence from modeling of the present climate indicates that the G.A. pattern could be maintained by increased snow cover over eastern North America. Enhanced snow cover, due to decreased Northern