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06-06 06_06.jpg |
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| Title: | The snowline separates the zone of accumulation and the zone of wastage. |
| Caption: | Above the snowline, more snow falls each winter than melts each summer. Below the snowline, the snow from the previous winter completely melts, as does some of the underlying ice. Whether the margin of a glacier advances, retreats, or remains stationary depends on the balance or lack of balance between accumulation and wastage (ablation). When a glacier moves across irregular terrain, crevasses form in the brittle portion. |
| Keywords: | alpine glaciers, valley glaciers, snow lines, zones, icebergs |