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You are browsing the archive for Alsek Lake glacier retreat Archives - AGU Blogosphere.

27 November 2017

Alsek Glacier, Alaska Retreat & Glacier Separation

Alsek Glacier in a 1984 Landsat image and 2017 Sentinel image.  Red arrows indicate 1984 terminus, yellow arrows 2017 terminus location, pink arrows tributaries that joined the glacier in 1984 and purple dots the snowline.  AR=Alsek River, G=Gateway Knob and P=Prow Knob. Alsek Glacier descends from the Fairweather Range terminating in Alsek Lake on the coastal plain. The glacier terminated at Gateway Knob (G) near the outlet of Alsek River …

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1 May 2016

North Fork Grand Plateau Glacier, Alaska-Spectacular 3 km Retreat 2013-15

North Fork Grand Plateau Glacier comparison in 2013 and 2015 Landsat images.  Illustrating the rapid retreat and lake expansion in just two years. Pink arrow is 1984 terminus, red arrow is the 2013 terminus and yellow arrow 2015 terminus. The orange dots are the 2013 terminus.  The Alsek Glacier is a large glacier draining into Alsek Lake and the Alsek River in southeast Alaska  Its neighbor the Grand Plateau Glacier has one fork  flows north and …

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