Item: Observations of snow avalanches on dynamic internal structures at alta, utah
Title: Observations of snow avalanches on dynamic internal structures at alta, utah
Proceedings: Proceedings of the 1994 International Snow Science Workshop, Snowbird, Utah, USA
Authors: Osamu Abe, Tsutomu Nakamura, Yasuaki Nohguchi, Rand Decker,Thor Femenias and Daniel Howlett
Abstract: Observations of snow avalanches on dynamic internal structures were carried out at Alta, Utah as a Japan/U.S. joint research project. A pylon to measure the impact pressures of snow avalanches was installed beneath Mount Baldy in an avalanche path which releases frequency both naturally and artificially. The mean slope angle of the avalanche path is approximately in 37 degrees. Three pairs of pressure gauges of 1.2 cmin diameter and two load cells with a pressure plate of 12.0 cm in diameter were set up on the pylon. Each pressure gauge has a sufficient small contact area as compared with to a snow block contained in avalanches. The pairs of the pressure gauges were prepared to determine the internal velocities from the lag times of each two impact pressure waves. A data set with regard to the internal structures was obtained by the research project. Meteorological data were also obtained in the Alta ski area. The data is being analyzed in the both countries.
Keywords: avalanche path, avalanche release
Digital Abstract Not Available