A bedload trap in the riverbed provided direct quantitative measurement of debris-transport rate in the East Fork River, Wyoming, a basin of 466 km(2) drainage area. Traction load moves only during the spring snow melt season. Data collected in three spring runoff seasons during which a peak flow of 45 m(3)/s occurred showed that transport rate is correlated with power expenditure of the flowin...

Melt-freeze crusts often occur as a result of wet snow, rain or strong insolation. Past observations have revealed the formation of weak layers at their boundaries, even when the depth-averaged temperature gradient favours rounding. Research has, however, predominantly targeted temperature regimes dominated by kinetic growth. During the winter of 2007-2008 University of Calgary researchers unde...

A wide range of delta morphologies occurs along the fringes of the Young Sound in Northeast Greenland due to spatial heterogeneity of delta regimes. In general, the delta regime is related to catchment and basin characteristics (geology, topography, drainage pattern, sediment availability, and bathymetry), fluvial discharges and associated sediment load, and processes by waves and currents. Mai...

This paper presents various results of research on disaster prevention system using Wireless Sensor Network (WSN). Although we use the snow load sensing as a case study, the proposed system can be further easily adopted to detect other emergencies. Ongoing research on snow measurement is also briefly explained. We introduce architecture of the entire system along with our new modular WSN platfo...

Dave Bohnhoff is an Assistant Professor in the Agricultural Engineering Department at the University of Wisconsin-Madison. He teaches courses in Agricultral Structures and Environment, Metal Building Systems, and Residential Construction. The majority of his research has involved computer modeling and laboratory testing of mechanically-laminated posts and mechanical fasteners in wood. He is ver...

Analysis of the conditions movement mobile robotic complexes showed that about 70% time is made up sand, gravel and sandy areas. In winter, it covered with snow. An unsolved problem traffic during transition period, namely, on snow-sandy support bases. This paper devoted to study road soil foundations, i.e. mixed surfaces consisting sand A method for obtaining (mixtures) different percentages d...

P otential water pollution associated with melting snow are a concern to watershed managers in northern climates. In fact, in some urban areas, substantial portions of the annual load of pollutants such as hydrocarbons, metals, solids, nutrients, and chlorides come from snowmelt and early spring runoff events. Thus the annual cycle of pollutant build-up and subsequent release during snowmelt ca...