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

May 18, 2020

Talking about Iceberg Melt Rates and Glacier Frontal Ablation: Seller and Heim Glacier, Antarctica

Figure 1: Study sites considered in this article: Seller Glacier and Heim Glacier (Landsat-8 image courtesy of the U.S. Geological Survey) Post by Mariama Dryak Iceberg melt is caused by the temperature of the water in which an iceberg floats and the velocity of the water flowing around the iceberg. As a result, iceberg melt is an excellent indicator for the ocean conditions in which an iceberg resides. Given the …

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May 5, 2020

Huron Glacier Retreat, Livingston Island, Antarctica 2001-2020

Huron Glacier (H) and Kaliakra Glacier (K) in 2001 and 2020 Landsat images.  Extensive retreat at bedrock locations Point A and B with limited retreat at C and D. Livingston Island, Antarctica is part of the South Shetland Island chain and is primarily covered by glaciers.  At the eastern end is Huron Glacier. Huron Glacier and the adjacent Kaliakra Glacier are tidewater outlet glaciers terminating in Moon Bay on the …

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February 19, 2020

Boydell Glacier Accumulation Zone Rapid Melt Feature Development February 2020

Boydell Glacier terminates at the island adjacent to Point A.  The accumulation zone between Point A, B and C is on January 12, 2020 has limited gray area indicating bare firn.  By Feb. 13 there is considerable cobalt blue snow/firn areas saturated with melt water. The yellow dots mark the margin of the ice sheet and pink dots the margin of the ablation zone on Feb. 13, 2020.  The Boydell …

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February 17, 2020

Record Antarctic Temperatures in Feb. 2020 Impact on Eagle Island Ice Cap

Eagle Island Ice Cap, Antarctica in Landsat images from Feb. 4, 2020 and Feb. 13, 2020.  Point E indicates an are area of snow/firn that is saturated with meltwater. Point A and B indicate locations where the amount of bare rock/ground and hence albedo have changed dramatically. This post was source for an article by Kasha Patel published by NASA Earth Observatory, CNN and Washington Post. The impact of period …

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February 11, 2020

Eyrie Bay, Antarctic Peninsula Retreat 2000-2020

From REMA Landsat images from Feb. 2016 and Oct. 2019 indicating the front of the Cugnot Ice Piedmont (CP)  and Broad Valley (BV) ice fronts in Eyrie Bay.  Point A, B, and C indicate specific bedrock knobs near the ice front.  Point D is just south of a side glacier entering the bay. Eyrie Bay is near the tip of the Antarctic Peninsula and is rimmed by tidewater glaciers including …

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October 31, 2019

Ongoing Evolution of Fleming Glacier, Antarctica

Fleming Glacier in 2000 and 2019 Landsat images. The 2000 glacier front is marked by red arrows on the north and south margin and red dots along the front. The 2019 glacier front is marked by yellow arrows and yellow dots. During the 1980’s the glaciologic community was focused on increasing our baseline information and monitoring of Antarctic ice shelves. An understanding that  ice shelves had  a critical role along …

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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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