Thursday, January 15, 2009

ISP#8

I've caught a cold today and stayed at home. So, I'll write about the San Juan mt and the avalanches. Avalanches occur when a snow pack loses its grip on a slope and slides downhill. Typically, slopes between 20 to 30 degrees and snow packs of 34 inches or more may produce avalanches. San Juan mountain's elavation is 14,309 ft, the temprature is about 20-26°F, the depth of packed snow is about 60~100inches so the frequency of the avalanche occuring is very often. The snowpack is really heavy and the slope is steep. It said on the homepage that February is the month which avalanches occur the most. The reason is because a lot of days are

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