CONTROLLED ACCUMULATION OF BLOWING SNOW An experiment designed to trap falling snow and controll drifting snow over the high alpine regions of the Colorado Rocky Mountains is described. The experiment is based on the fact that a wind shift occurs following many snow occurrences over this region and a snow fence
Snow-Collection Mechanisms and the Capacities of Snow Fences
To windward, saltating snow particles settle out of the air and suspended particles settle down in a sheltered area behind the fence. The lengths and cross-sectional areas of equilibrium lee drifts are shown as a function of both the height and density of …
The geometry of a perimeter fence is dependent on camp size, prevailing wind, quality/depth/ consistency of snow, obstacles and surface unevenness, and available fence resources. Assuming a camp will be set up for severe wind (see Severe Wind Management
Experimentally increased snow accumulation alters soil …
2010年2月17日 · At Fryxell, the presence of the snow fence increased gravimetric soil moisture from 1 to 5–9%. This was associated with a decline in abundance of the dominant animal, Scottnema lindsayae, a nematode typically found in dry soil, and an increase in Eudorylaimus sp. a nematode associated with moist soil.
Snow-Fence Experiments in Alpine Areas | Journal of Glaciology ...
At three of four alpine sites in the central Rocky Mountains, large snow fences appreciably increased snow accumulation on natural snowfields. At two of these sites, the increased accumulation persisted all summer and prolonged the melt season 1–3 weeks.
(PDF) Mechanism and effects of snow accumulations and controls …
2016年7月23日 · Based on the friction velocities near the ground, two sets of criteria are proposed to evaluate the deposition and erosion effects of different fences. According to flow separation and...
Experimentally increased snow accumulation alters soil …
2010年7月1日 · Snow accumulation can influence soil properties in arctic and alpine tundra, boreal and temperate forests, and temperate grasslands. However, snow may be even more influential in arid...
snow accumulation on soils in the McMurdo Dry Valleys we experimentally manipulated the quantity of snow at two locations and monitored soil properties over 5 years in rela-tion to a snow depth gradient created by snow fences. We predicted that increased snow depth would be associated with increased soil moisture and a shift in soil animal com-
Experimentally increased snow accumulation alters soil moisture …
Soil biochemistry and animal populations were monitored over 5 years along a gradient of increasing snow depth away from the fences. We hypothesized that increased snow depth would be associated with increased soil moisture, decreased salinity and inorganic nitrogen due to leaching, and increased chlorophyll a concentrations in the surface soil.
Mechanism and effects of snow accumulations and controls by …
2016年7月23日 · The study indicates that the capabilities for snow interception by the solid fence without wind gap and the distance from which to the second snow coverage center both increase with the fence height. Furthermore, it is found that the scouring range for snow surface increases significantly with the size of wind gap, and the snow accumulation ...
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