Secrets of the Snow: Visual Clues to Avalanche and Ski Conditions
Edward R. LaChapelle is Professor Emeritus of Geophysics and Atmospheric Sciences at the University of Washington. He is the author ofField Guide to Snow CrystalsandABC of Avalanche Safety;co-author with Austin Post ofGlacier Ice,and author of the originalUSDA Snow Avalanche Handbook.He began his snow career at the Swiss Federal Institute for Snow and Avalanche Research, and as a U.S. Forest Service snow ranger he developed many of the techniques of avalanche forecasting and control in use today.