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June 19, 2017

Potanin Glacier Area, Mongolia Retreat & Fragmentation

Potanin Glacier, Mongolia comparsion in 1991 and 2016 Landsat images.  Yellow dots indicate 2016 terminus, purple dots the snowline, red arrow the southeast margin of proglacial lake, and purple arrows peripheral alpine glaciers that are fragmenting.  Potanin Glacier is in the Altay Mountains of the Tavan Bogd region in western Mongolia, and is the nations longest glacier.  The glacier ranges from 2800 to 4000 m a.s.l. and is length is about 11 …



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June 15, 2017

West Ganglung Glacier, Tibet Glacier Loses 20% of Length

Landsat image comparison from 1991, 2001 and 2016 of West Ganglung Glacier, red arrow is the 1991 terminus, yellow arrow the 2016 terminus, green arrow the eastern glacier proglacial terminus lake and purple arrow expanding zone between a former tributary and West Ganglung Glacier West Ganglung Glacier is on the China-India border 6 km west of Ganglun Grangri Peak meltwater enters the Sultej River and then Mapam Tso.  the glacier terminates …



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June 13, 2017

Torfajökull, Iceland Accumulation Zone Demise Drives Recession

Torfajökull in 1994, adn 2014 Landsat images.  Note the lack of retained snowpack in 2014 and emerging bedrock areas within icecap, purple arrows. Torfajökull is a small ice cap north of  Myrsdaljökull in Iceland.  The glacier’s lowest elevation is 750 m and the highest elevation is 1150 m.  This low of an elevation range in a climate driving higher snowlines places this type of ice cap at great risk for …



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June 8, 2017

Sabbione Glacier, Italy Retreat & Fragmentation

Sabbione Glacier in 1999, 2001 and 2016 Landsat images.  Red arrow is 1999 terminus location, red arrow the 2016 terminus location and the purple area new rock outcrops emerging in the midst of the glacier. Sabbione Glacier is on the Swiss-Itlaian border.  The glacier drains into Lago Sabbione an artificial lake that in turn drains into Lago Morasco, which is a 29MW hydropower facility. The lake also has good fishing. This …



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June 5, 2017

Llewellyn Glacier, BC Proglacial Lake Merging From Retreat

Llewellyn Glacier comparison in 1984 Landsat and 2016 Sentinel images.  Red arrows the 1984 terminus locations for proglacial lakes A-D, yellow arrows the 2016 terminus locations for A and B. Point E was the peninsula separating proglacial lakes A and B, which are now joined due to glacier retreat.  The second largest glacier of the Juneau Icefield is the Llewellyn Glacier which is in British Columbia. The Juneau Icefield Research …



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May 30, 2017

Upernavik, NW Greenland New Islands, Nunataks and Former Glacier Base Exposed

Upernavik Glacier in Landsat images from August 2000 and August 2016.  Each Point is at the same location in both image, and the changes are noted in the discussion below.  The same locations are also identified in the July 2001 and Aug. 2016 image below.  Upernavik Glacier is on the NW Greenland Coast the next major outlet north of Rinks Glacier.  Today the glacier has four separate main calving termini, that …



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May 25, 2017

Nizkiy Glacier Embayment Expands Island Forms, Novaya Zemlya

Nizkiy Glacier in 1990 and 2016 Landsat images.  red arrows indicate locations of the 1990 terminus and yellow arrows the 2016 terminus.  Purple arrow indicates an expanding bedrock rib amidst the glacier and purple dots indicate the snowline. Nizkiy  Glacier is on the west coast of the island reaching the Barents Sea Coast. The glaciers of northern Novaya Zemlya, Russia are truly generally out of sight out of mind. There remoteness and …



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May 22, 2017

Besselsbreen Retreat Glacier Wide Thinning , Svalbard

Besselsbreen (B) and Augnebreen (A) comparison in a 1990 and 2016 Landsat image. Red arrows indicate terminus position in 1990, yellow arrow indicates terminus in 2016, purple arrows indicate locations of upglacier thinning from 1990 to 2016 and the yellow line indicates the width of the tongue on the eastern side of Besselsbreen to the medial moraine with Augnebreen Besselsbreen Glacier flows north to  tidewater from the Barents Icecap on Barentsoya …



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May 18, 2017

Hinlopenbreen, Svalbard 7 km Retreat 1990-2016.

Hinlopenbreen, Svalbard in 1990 and 2016 Landsat imagery.  red arrow is 1990 terminus, yellow arrow is 2016 terminus,and Oslobreen is noted by Point O Hinlopenbreen is a large tidewater glacier in northern Svalbard.  The glacier has a periodic history of surging, with the last surge occurring in 1970 (Nuth et al 2010). The glacier has the largest negative balance of -0.58 m/year from 1965-2005 (Nuth et al 2010).   The …



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May 15, 2017

Azaubashi Glacier Fragmenting, Mount Elbrus, Russia

Azaubashi Glacier (W) and Azau Glacier (A) in 1985 Landsat and 2016 Sentinel Image. Orange arrows indicate particular areas of fragmentation and bedrock expansion.  Pink arrows indicate connection  with Azau Glacier the terminus of which in 1985 is at red arrow and in 2016 is at yellow arrow.  Azaubashi Glacier is on the southwest side of Mount Elbrus, Caucasus Mountains of Russia, merging with the Greater Azau Glacier. The glacier drains …



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