December 1, 2016

Semienova Glacier, Kyrgyzstan Area, Volume, Velocity Decline

Semienova Glacier, Kyrgyzstan Area, Volume, Velocity Decline

Landsat comparison of Semenova Glacier in 1998 and 2016.  Red arrow is the 1998 terminus, yellow arrow is the 2016 terminus and purple are locations where tributaries are separating from each other or disconnecting from the main glacier. Semienova Glacier is a valley glacier in the northeast corner of Kyrgyzstan draining into the Sary Dzhaz (Aksu) River which then flows into the Tarim Basin, China. Farinotti et al. (2015) used three approaches …

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November 28, 2016

Hornopirén Glaciers, Chile in Spectacular Retreat

Hornopirén Glaciers, Chile in Spectacular Retreat

Landsat comparison of Rio Blanca Glaciers in Hornopirén National Park, CVhile from 1985 to 2016.  Red arrow 1985 terminus, yellow arrow 2016 terminus, purple dots the snowline and purple arrows expanding bedrock areas amidst the glacier. Hornopirén National Park is in the Los Lagos region of Chile.  The park is host to a number of glaciers that are in rapid retreat.  Davies and Glasser (2012) mapped the area of these glaciers …

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November 21, 2016

RG150 Glacier Retreat, Southern Patagonia Forms Lake

RG150 Glacier Retreat, Southern Patagonia Forms Lake

  Retreat of RG150 indicated in Landsat images from 1984, 2001 and 2015.  Red arrow indicates 1984 terminus and yellow arrow 2015 terminus.  RG150 is a 3.5 km long glacier in Bernardo O’Higgins National Park on the western edge of the Southern Patagonia Icefield, Chile.  RG150 is an unnamed glacier given this designation as part of the Randolph Glacier Inventory.  The glacier terminates in a lake that drains into Seno …

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November 18, 2016

Barnes Ice Cap, Baffin Island Evident Response to Climate Change

Barnes Ice Cap, Baffin Island Evident Response to Climate Change

Barnes Ice Cap transect and closeup of divide area in August 2016.  Black dots indicate summit divide of the ice cap. Notice the channels extending away from the divide.  These are not stream channels, as they are too wide, but they are meltwater formed valleys that are preferred pathways for the meltwater transport. Barnes Ice Cap located in the center of Baffin Island, Canada covers an area of ~5800 km2. …

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November 14, 2016

Hagafellsjokull, Iceland Reflects Langjokull Thinning & Retreat

Hagafellsjokull, Iceland  Reflects Langjokull Thinning & Retreat

Landsat comparison of the terminus of Hagafellsjökull from 2000 and 2016.  The red arrows are the 2000 terminus, the yellow arrows the 2016 terminus.  Purple arrows indicate upglacier thinning.  Langjökull is the second largest iceap in Icalnd with an area of over 900 square kilometers. The mass balance of the icecap has been reported since 1997 and his lost over 1 m per year during this period (WGMS, 2016).  Pope …

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November 7, 2016

Thulagi Glacier, Nepal Retreat and GLOF Potential

Thulagi Glacier, Nepal Retreat and GLOF Potential

  Thulagi Glacier change in Landsat images from 1991 and 2016.  Red arrow is 1991 terminus, yellow arrow 2016 terminus and purple arrow increasingly exposed bedrock rib amidst icefall. Written With Prajjwal Panday: @prajjwalpanday Thulagi Glacier terminates in a lake referred to both as Thulagi and Dona Lake. ICIMOD (2011) has identified this as a potential threat for a glacier lake outburst flood (GLOF) and has conducted extensive fieldwork there.  Thulagi Lake …

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November 1, 2016

Desolation Valley, Alaska, Conversion from Glacier to Lake

Desolation Valley, Alaska, Conversion from Glacier to Lake

  Retreat of Desolation-Fairweather Glacier from 2010-2016 in Landsat images.  The red arrow indicates 2010 terminus positions, yellow arrow the 2016 terminus. Pink arrow a delta exposed by lake level lowering. D=Desolation Glacier. Desolation Glacier flows west from the Fairweather Range into Desolation Valley where in 1986 it joined with the Fairweather Glacier flowing from the north and the Lituya Glacier flowing from the south to fill the valley with glacier …

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October 28, 2016

Coley Glacier Retreat, James Ross Island, Antarctica

Coley Glacier Retreat, James Ross Island, Antarctica

Coley Glacier terminus comparsion in Landsat images from 2000 (red arrows) and 2016 (yellow arrow)  indicating a retreat of 2 km along the western side and 1 km along the eastern side.  Purple dots indicate the transient snowline and the purple arrow an area of debris exposed with glacier thinning.  Coley Glacier is a tidewater glacier on the northeast side of James Ross Island near the tip of the Antarctic …

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October 25, 2016

Ross Ice Shelf Shear Zone-Research Focus of Gordon Hamilton

Ross Ice Shelf Shear Zone-Research Focus of Gordon Hamilton

Satellite Image of the Shear Zone:  The crevasses do have a surface representation, but are not generally open.  Gordon Hamilton lost his life on Saturday Oct. 22, 2016 conducting research in the shear zone between the Ross Ice Shelf and McMurdo Ice Shelf.  I had the pleasure of working with and reviewing Gordon’s work; hence, it seems important to elaborate on the research that had brought researchers to this cold …

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October 21, 2016

Tasermiut Fjord, Greenland loses its Glacier Connection

Tasermiut Fjord, Greenland loses its Glacier Connection

  Landsat image sequence from 1999-2016.  Red arrows mark the 1999 terminus, yellow arrows the 2016 terminus and the purple arrow a tributary that detaches from Semitsiaq (S). Tasermiut Sermeq (T) retreats from the fjord.  Tasermuit Fjord in southern Greenland is noted for its beauty, and until recently the fjord terminated at a glacier front. Currently no glacier reaches to the fjord. The retreat over the last two decades is …

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