06-AvalancheForecasting

06-AvalancheForecast - Ned Bair Donald Bren School of Environmental Science and Management 1 Birkeland Karl et al Avalanche survival strategies for

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3/25/2008 1 Ned Bair Donald Bren School of Environmental Science and Management 1 Crown Flanks Flanks Stauch wall (usually obliterated) 2 (Crown not visible) Toe Flanks Flanks (Stauch wall not visible) 3 Birkeland, Karl et al. Avalanche survival strategies for different parts of a flowing avalanche: Merging theory and practice to increase your odds . http://www.avalanche.org/~nac/NAC/techPages/articles/08_TAR_BirkelandBarteltMeiners.pdf 4 5 6
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3/25/2008 2 7 8 ± Used at Mammoth: Decision Trees & Nearest Neighbors ± For a brief review of other methods see “Numerical Avalanche Prediction” in The Avalanche Handbook, 3 rd edition pgs. 210 213. 9 ± Data are classified based on a series of right or left turns down a tree 10 | snow48<0.30988 Maximum class size snow24<0.07239 pptwind48<0.0447127 snow24<0.32385 accumswe<0.79217 02 33 43 11 12
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3/25/2008 3 Term Definition Units base24 24 hr new snow depth meters base48 48 hr new snow depth meters base72 72 hr new snow depth meters compact Total snow settlement between storm cycles meters degdays (T max + Tmin) / 2 summed over the entire season. Tmax is the daily maximum temperature and T min is the daily minimum temperature. º Celsius hitemp
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This note was uploaded on 08/06/2008 for the course ESM 236 taught by Professor Dozier during the Spring '08 term at UCSB.

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06-AvalancheForecast - Ned Bair Donald Bren School of Environmental Science and Management 1 Birkeland Karl et al Avalanche survival strategies for

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