Snow Formation and Avalanches : Page 219
In a wet-snow avalanche, it is particularly important to exert every ounce of strength to get one's head above the snow, or failing this, to obtain a space around one's head and chest as the avalanche comes to rest. This is because a wet avalanche frequently freezes solid as soon as it stops.
If an avalanche starts above a skier, he may be able to ski away from it if it is a wet-snow avalanche which moves slowly, but a wind-slab avalanche or dry-snow avalanche usually travels far too fast for escape by this method, and if such an escape it attempted and fails, the skier is caught with his skis on.