ATSC 113 Lecture Notes - Lecture 4: U.S. Route 219, Avalanche, Crystal Growth
Document Summary
Snow density can be defined as the amount or mass of ice and liquid water per volume(30- 300 kg/m3) the warmer the temperature, faster wind speeds the higher the density wind board or a wind slab snow is falling during strong winds. Right-side-up snow has higher-density (heavier) snow underlying lower-density snow(temperature and/or wind speed decreases during the course of a storm or storm cycle) Upside-down snow occurs with a warm front gradient is a change in a property. Snowpack temperature gradient is the most important factor that influences the evolution of the snowpack. Faceted crystals, or facets, produced:strong vertical temperature gradient exists. The water vapour moves quickly, and crystal growth happens quickly. Rounded crystals, or rounds, are produced when temperature gradients are weak, water vapour moves slowly, and crystal growth happens slowly. Types of snowpack layers: weakly-bonded snow layers, strongly-bonded snow layers, Storm snow last ~48 hours: snow climates:1.
