You are browsing the archive for Antarctic Glacier retreat Archives - From a Glacier's Perspective.
March 20, 2023
Snowcover Free Glaciers in Antarctica in 2023
Eastern Ice Cap on Vega Ice Cap is snow free in Feb. 19, 2023 Sentinel images. Bedrock areas at Point A and B will expand with snow free conditions. In 2023 the near complete loss of snowcover is apparent on a number glacier and ice caps In Antarctica, on several islands along the Antarctic Peninsula. This yields a more extensive bare ice and firn surface area, that increses melt rate …
March 17, 2023
Eagle Island Ice Cap, Antarctica Loses its Snowcover in 2023
Eagle Island Ice Cap in Sentinel image from Feb. 19, 2023 illustrating only small patches of snowcover left, 5-10% of ice cap. On February 19, 2023 Eagle Island Ice Cap, Antarctica has less than 10% snowcover. This is less snowcover than observed even after the period of record warm weather over the Antarctic Peninsula in February 2020. Temperature when the all time Antaractica temperature record was set at Esperenza Base. …
January 2, 2023
King George Bay, Antarctica Glacier Retreat Expands Turret Point Oasis and Releases New Island
King George Bay Glacier retreat releases a new island (Point B) and expanded ice free oases in 1989 and 2022 Landat Images. Point A marks an area where the glacier had reached the coast until after 2005. Point B is the new island, Point C= new oasis, PI=Penguin Island, TP=Turret Point Oasis King George Bay is on the southeast coast of King George Island. This coastline is comprised mainly of …
November 23, 2020
Coley Glacier and Sjögren Glacier, Antarctic Peninsula Exhibit Rapid Melt Feb. 2020
Coley Glacier in Landsat images from Feb. 4, 2020 and Feb. 13, 2020. Magenta dots indicate the snowline The impact of a period of record warm weather over the Antarctic Peninsula during February 2020 was rapid development of melt features and expansion of melt area on many glaciers near the tip of the Peninsula, where the temperature records were set at Esperenza and Marambio Base. Here we examine Landsat imagery at Coley …
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 …
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 …
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 …
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. Update in December 2022 …
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 …
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 …
Dean of Academic Affairs at Nichols College and Professor of Environmental Science at Nichols College in Massachusetts since 1989. Glaciologist directing the North Cascade Glacier Climate Project since 1984. This project monitors the mass balance and behavior of more glaciers than any other in North America.