Give geographical terms for the following:

The bottom line of a snowfield.

Snowline

Explanation

Snowline is the line demarcating between the snow-covered and snow-free areas. It is the line up to which the level of snow extends given a particular point of time. It is the amount of permanent snow. The quantity of snowfall, steepness of the topography, exposure of the area to sun, winds, their speed and velocity are some of the factors that affect the snowline.