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发表于 2010-12-24 20:05:03
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这个周末的雪崩预告都是high-considerable，有些担心，去的路线是chanllenging terrain，还是有一定风险，请看VOC的描述和用Avy trip planner做出的风险估算
Avalanche Hazard
While this route is much safer than any of the other access routes to the Brew Hut, avalanches can still pose a threat under unstable conditions. The avalanche hazard along this route is similar to the avalanche hazard along the marked winter route to the Elfin Lakes hut in Garibaldi Park. The route crosses several open south facing talus slopes between 1150m and 1300m elevation. These slopes are steep enough to avalanche under the right conditions. Since the slopes are at low elevation and sheltered from the wind, only rare circumstances would create avalanche hazard. The slopes are south facing so they frequently see pinwheeling and small wet loose snow avalanches, but these types of slides are generally not very dangerous here because of the small size of the slopes. The CAA below treeline avalanche hazard rating is applicable to these slopes.
None of the slopes are very large, with a maximum height of about 50m and thus they are not capable of generating avalanches larger than size 2. The first of the slopes at 1150m is difficult to avoid. This slope is 31 degrees. The remaining ones can be easily bypassed in the forest on the downhill side.
The alpine section of the route from Brew Lake to Brew Hut is very open terrain. It is possible to navigate this section without being exposed to any avalanche slopes, but it is also possible to wander into avalanche start zones, especially in poor visibility. |
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发表于 2010-12-23 20:58:01
发表于 2010-12-24 16:51:23