METHOD FOR DETERMINING THE THICKNESS GROWTH OF SNOW ON THE SLOPES avalanche

摘要

FIELD: physics.;SUBSTANCE: wind velocity at the crest (V₁) and wind velocity on the slope (V₂) are first measured on the leeward side of the avalanche-prone slope during a period which is not prone to avalanches, for example, summer. The distance between measuring points (L) is determined and the wind velocity attenuation coefficient for the given slope (K) is calculated using the formula Further, during winter, in standard weather observation conditions according to a 2nd order weather station program, duration of a snowstorm (T_m), rate of the snowstorm (q_m) and the amount of precipitation (M) in the calm belt, corresponding to wind velocity of 6 m/s, are determined. Wind velocity at the crest (V_c), the angle between the wind velocity vector and the crest line (α) and the slope angle (β) are simultaneously determined. The maximum increase in thickness of the snow cover (h) on the slope due to precipitation and snowstorm deposits is then determined using the formula ;EFFECT: high accuracy of determining increase in thickness of snow cover.;1 dwg