The device pushes through the snowpack, taking detailed readings of resistance that are recorded on a laptop for analysis.
Its googly eyes were insectlike, and its furry feet had sharp hooves for breaking through the snowpack.
Meltwater and liquid precipitation must travel through the snowpack by slow percolation until reaching well-defined meltwater channels in the solid ice below.
Zhu et al. (2005) described a similar situation where microbial activity in the soil of a lowland tundra did not cease during snow cover and N2O continuously diffused to the atmosphere through the snowpack.
Colbeck (1972) developed a theory of water percolation in snow and Colbeck (1975) developed a theory of water movement through a layered snowpack.
Long duration experiments (up to 48 h) in a flow-through chamber and in the natural snowpack revealed sun-synchronous diurnal variations of all three reactive nitrogen oxides.
This would decrease summer baseflow relative to the past century through increased evaporation and decreased snowpack, even if precipitation increases moderately (Stewart and others 2004).
But on Wednesday, Mr. Brown was standing on an utterly dry field after he and Mr. Gehrke went through the motions of measuring a snowpack.
Besides learning how to find and dig out avalanche victims, students are taught to recognize and travel safely through risky terrain and to analyze weather and snowpack to avoid slides.
We use stored water in reservoirs, snowpack and underground aquifers to carry us through.
