Mer de Glace, France
Posted by: ToRo61
N 45° 55.139 E 006° 55.841
32T E 339535 N 5087128
The longest glacier in France.
Waymark Code: WMCW31
Location: Auvergne-Rhône-Alpes, France
Date Posted: 10/17/2011
Views: 32
The Mer de Glace (Sea of Ice) is a glacier located on the northern slopes of the Mont Blanc massif, in the Alps. At 7 kilometres (4.3 mi) long and 200 metres (660 ft) deep, it is the longest glacier in France.
It lies in the Chamonix valley, it was the first place in the valley to have a ready-made tourist attraction.
The Mer de Glace, like all glaciers, it is constantly renewed under the effect of two phenomena: accumulation, notably due to snowfall and ablation, essentially due to melting. The Mer de Glace flows permanently under the effect of its own weight, crusting crevasses, seracs or pockets of water to form, depending on the type of ground.
The glacier's speed, although not perceptible to the naked eye, is considerable. From more than 120 metres (390 ft) a year in its upper part, the Mer de Glace moves about 90 metres (300 ft) per year in the region of Montenvers, which is about one centimeter per hour.
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