firn line

noun

1. Also called: firn limit. the zone of a glacier between the lower region of solid ice and the upper region of névé, above which ablation occurs

2. the snow line on a glacier

Example Sentences

“It’s undeniable that the average firn line is creeping up,” Volken said, referring to the line across glaciers at which exposed glacier ice transitions to the snow-covered surface of a glacier.

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