Avalanche Aware: Safe Travel in Avalanche Country by John Moynier

By John Moynier

In the event you shuttle, ski, snowmobile, snowshoe, or mountaineer in a space the place there's lots of slope and many snow, you then are uncovered to avalanche risk. In Avalanche conscious, veteran backcountry ski advisor and avalanche forecaster John Moynier deftly courses you thru the fundamentals of the way avalanches paintings, spotting avalanche terrain, and checking out the snow pack-before you enterprise onto risky floor. valuable black-and-white illustrations of right equipment, slope perspective, snow pit assessments, and the results of wind and climate accompany his witty, informative causes of ways to prevent avalanche threat. No booklet on avalanche safeguard will be whole with out a description of seek equipment within the occasion of an unforeseen slide, and Moynier's worthy reasons of ways to head approximately discovering a misplaced buddy offers you additional self belief in case you take on the slopes. For actually stress-free and winning iciness expeditions, learn Avalanche acutely aware earlier than you head out and make it a part of the security apparatus you hold within the box.

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Extra resources for Avalanche Aware: Safe Travel in Avalanche Country

Sample text

Adjustable-length probe poles are very popular, and they help keep your gear to a minimum. The adjustable feature has nothing to do with their ability to probe, but can be a disadvantage if it causes the pole to slip while probing. Non-adjustable probes work better, although they are not as versatile. Modern carbon-fiber poles are lighter and easier to push into dense debris than traditional large-diameter aluminum poles. Page 37 Other Gear Other than an avalanche transceiver, shovel, and probe, you really do not need much else in the way of specialized equipment.

The Page 24 primary cause of this type of avalanche is the development of weak crystals or bonds between layers within the snowpack. The weakening process is essentially the rotting of the snowpack from within. " The hazard created by indirect-action triggers may actually increase with time after a storm, especially if the temperatures remain very cold or the snowpack is thin. Warning! Sometimes a hard slab will be so strong that it can support itself even when part of the underlying weak layer collapses.

Page 46 The slope's orientation to the sun is also important. South-facing slopes receive the greatest amount of incoming solar radiation and tend to stabilize more quickly, but they may also release as a wet slide when the sun warms them. Sunballs, snowballs rolling down a slope that is being warmed by the sun, or small wet sluffs are signs of decreasing stability on sunny slopes. North-facing slopes are slower to feel the stabilizing effects of solar radiation and are more prone to the weakening effects of cold temperatures in midwinter.

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