Item: Electrical measurements of snow wetness in undisturbed snow
Title: Electrical measurements of snow wetness in undisturbed snow
Proceedings: 1986 International Snow Science Workshop, Lake Tahoe, California, USA
Authors: James A. Bergman
Abstract: Snow wetness along with other factors can directly affect avalanche potential. During 2 recent winters, the wetness of undisturbed snow at the USDA Forest Service's Central Sierra Snow Laboratory in northern California, was measured at several levels within a snowpack by using a newly developed twin-disc capacitance sensor. Wetness increases of 5 percent by volume were recorded during rain-on-snow with subsequent drainage after rain ceased. Wetness increased 2 to 5 percent by volume over the winters, depending on snow maturity. A surface diurnal melt water flux of up to 2 percent by volume was observed when the sensor was exposed during spring snow melt.
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Keywords: snow wetness, snowpack, twin-disc capacitance sensor
Digital Abstract Not Available