Question

Which of the following is a characteristic of a dry slab avalanche?

1) It occurs when a cohesive layer of snow slides on a weaker layer of snow
2) It is typically triggered by a skier or snowboarder
3) It is more common in wet snow conditions
4) It is less dangerous than a wet slab avalanche

Answer 1

A dry slab avalanche occurs when a cohesive layer of snow slides on a weaker layer of snow. It is typically triggered by natural factors and can be dangerous. Dry slab avalanches are more common in dry snow conditions.

Step-by-step explanation:

A dry slab avalanche occurs when a cohesive layer of snow slides on a weaker layer of snow. This can happen when there is a weak layer of snow beneath a stronger layer, causing the stronger layer to slide off. It is typically triggered by natural factors such as wind loading or mechanical vibrations from the snowpack.

Dry slab avalanches are more common in dry snow conditions, as opposed to wet snow conditions. Wet slab avalanches occur when the snowpack is saturated with water and the whole mass of snow moves as a single unit. Therefore, it is not true that dry slab avalanches are more common in wet snow conditions.

In terms of danger, dry slab avalanches can be very dangerous, especially if they occur on steep slopes or in areas with a high concentration of people. Wet slab avalanches can also be dangerous, but both types pose significant risks.