METHOD OF DETERMINING STRUCTURAL AND STRATIGRAPHIC FEATURES OF SNOW COVER STRUCTURE Russian patent published in 2019 - IPC G01N1/04 

FIELD: physics.

SUBSTANCE: scope of invention use is investigation of physical properties of snow cover. Essence of the invention consists in the fact that the snowy bore pit is made with rectangular section, then with the help of a rigid rectangular dark plate-screen, the height above the investigated snow cover, at the distance of not more than 5 cm from the edge of the front wall of the pit, the snow block is vertically separated in situ. If there are interlayers of ice-covered snow in the snow cover, the thickness of the obtained snow block is reduced to transparency, where the snow layers are visually distinguishable on the dark background of the plate-plate in terms of density and color shades. Structural-stratigraphic features of structure of snow block profile are visually determined along the profile of formed snow block with installed by nearby snow-measuring rack with division of 1 mm. Then, the profile of the formed snow block is photographed with a nearby snow measuring rack. In the cameral conditions, the visual assessment of structural-stratigraphic features of the snow block profile is compared to the photograph obtained as a result of digital processing in the graphic editor and correction is made to the description of structural-stratigraphic features of the structure of the snow block, along which boundary of zones of recrystallisation of snow grains and formation of deep frost is determined in lower part of snow profile, textural inhomogeneities formed as a result of compaction and sublimation transformations of fallen snow and frost, based on which structural and stratigraphic features of the structure of the snow cover in the investigated region are determined.

EFFECT: high reliability of determining structural-stratigraphic features of the structure of the snow cover.

3 cl, 4 dwg