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August 29, 2017

Saleina Glacier, Switzerland Terminus Separation

Saleina Glacier comparison in 1985 and 2015 Landsat images.  The red arrow is the 1985 terminus, the yellow arrow the 2015 terminus and the purple dots the transient snow line in these August images.  Saleina Glacier is south of Trient Glacier descending a steep eastward oriented valley from Aiguille d’Argentiere on the northern end of the Mount Blanc Range.  The Swiss Monitoring Network has maintained annual observations of the glacier …


September 24, 2015

Bionnassay Glacier Terminus Tongue Detaches, Mont Blanc, France

Bionnassay Glacier drains west from Dôme du Goûter and Aiguille de Bionnassay of the Mont Blanc Massif in France. The glacier has a heavily debris covered terminus and has experienced less retreat from 1980-2010 then other Mont Blance glaciers. Bionnassay retreated 200 m (Moreau et al , 2012), while Mer de Glace retreated 500 m in the interval 1998 to 2008. Gardent et al (2014) observed a 25% decline in …


March 10, 2012

Taconnaz Glacier Retreat, Mont Blanc, France

The Taconnaz Glacier flows from 4300 m to 2000 m down the west side of Mont Blanc, from the Dôme du Goûter toward the Chamonix Valley. This glacier is best known for the large avalanches that are generated by the break off of large serac ice blocks from a wide ice cliff at 3300 m during the winter, blue arrows (Le Meur and Vincent, 2006). The ice blocks have been …