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You are browsing the archive for Antarctic Glacier retreat Archives - From a Glacier's Perspective.

February 13, 2019

Boydell Glacier, Antarctica Rapid Retreat 2001-2017

Boydell Glacier, Antarctica retreat in Landsat images from 2001 and 2017,  terminus in 2001 at red dots in 2017 at yellow dots.  A-E are reference points.  Boydell Glacier flows east from the northern Antarctic Peninsula and prior to the 1980’s was joined with the Sjogren Glacier as a principal feeder glacier to Prince Gustav Ice Shelf.  This 1600 square kilometer ice shelf connecting the Peninsula to James Ross Island disintegrated in the …

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January 16, 2019

Cape Longing, Antarctica Transitioning to Island via Glacier Retreat

Cape Longing, Antarctica in 2001 and 2018 Landsat images. Point A-G are at specific locations. Yellow dots mark the margin of the glacier connecting the Cape to the main Antarctic Peninsula. Cape Longing is on the Antarctic Peninsula between Larsen Inlet and Prince Gustav Channel.  Larsen Inlet along the south shore of Cape Longing was covered by the Larsen A Ice Shelf until its collapse in 1995. The Prince Gustav …

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January 7, 2019

Muller Ice Shelf, Antarctica 2018 Calving Event

Comparison of the ice front-yellow dots, icebergs-pink arrow and rifting-blue arrow in March 2018 and November 2018 Landsat images. A=Antevs Glacier, B=Bruckner Glacier, H=Humphreys Island and M=Muller Ice Shelf. New iceberg is at the lowest pink arrow adjacent to western calving front. Muller Ice Shelf is on the west side of the Antarctic Peninsula and  is one of the smallest remaining ice shelves covering 40 km2 in 2007. It is …

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April 3, 2018

Warsaw Icefield, King George Is., Antarctica Retreating from Shoreline

Warsaw Icefield, King George Island, Antarctica glacier retreat and nunatak expansion in 1989, 2001 and 2018 Landsat images. E=Ecology Glacier, B=Baranowski Glacier, W=Windy Glacier, 1989 terminus locations indicated by red arrows.  Point A & B are nunataks.  The Arctowski Polish Research Station is located on a relatively large ice-free oasis northeast of the Warsaw Icefield on King George Island, Antarctica. The station is on Admiralty Bay where  Ecological monitoring has been …

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December 8, 2017

Muller Ice Shelf, Antarctica Retreat and Rift Zone Expansion

Muller Ice Shelf (M) in 1989 and 2017 Landsat images fed by the Antevs (A) and Bruckner Glacier (B). The ice front is shown with yellow dots with separate calving margins on either side of Humphrey Island (H).  The blue arrow indicates a developing rifted zone of melange ice.  The pink arrows point out icebergs among sea ice.  Muller Ice Shelf is on the west side of the Antarctic Peninsula …

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March 26, 2017

Depot & Mondor Glacier Retreat, Antarctic Peninsula

Mondor and  (M) and Depot Glacier (D) at the tip of the Antarctic Peninsula in Landsat imagers from 1988, 2000 and 2017.  Yellow arrows indicates the 2017 terminus location of each.  The purple arrow indicates a bedrock ridge that has been expanding. On the Trinity Peninsula,which is the region at the tip of the Antarctic Peninsula, are Depot and Mondor that flow north and south from the same accumulation zone …

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October 28, 2016

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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July 21, 2016

Sjögren Glacier Fast Flow, Fast Retreat, Antarctica

Sjögren Glacier comparison in Landsat images from 2001 and 2016, red dots indicate terminus position, Point A, B, C and D are in fixed locations.  Sjögren Glacier flows east from the northern Antarctic Peninsula and prior to the 1980’s was a principal feeder glacier to Prince Gustav Ice Shelf.  This 1600 square kilometer ice shelf disintegrated in the mid-1990’s and was gone in 1995 (Cook and Vaughan, 2010). Scambos et al (2014) …

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April 11, 2016

Nansen Ice Shelf, Antarctica Calving Event Occurs April 2016

Nansen Ice Shelf just north of Dryglaski Ice Tongue on April 2 with evident rift,blue arrows, and after calving two icebergs on April 7, A and B. Images from NASA MODIS The NIWA reported a calving event from the Nansen Ice Shelf on April 11, 2016.  They are concerned about a mooring in Terra Nova Bay in front of the ice shelves. The area of the Nansen Ice Shelf is …

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March 30, 2016

Stange Ice Shelf, Antarctica, Maintains Stability 1989-2016

    Stange Ice Shelf, Antarctica in 2016 Landsat image.  Five rift zones are mentioned two  by the southern ice front R3 and R4.  Two by the central ice front R1 and R2. Purple dots mark ice front and yellow and red arrow the 1989 frontal positions on the north and south side of Case Island Holt et al (2014) provide an exemplary examination of the dynamics from 1973 to …

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