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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 …


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 …


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 …


January 22, 2012

Northwest Vega Island, Antarctica Glacier Retreat

Vega Island is a heavily glaciated island just east of the northernmost section of the Antarctic Peninsula (map from Davies et al, 2010 Aberystwyth University). The mass balance of Bahia Del Diablo Glacier (BDD green arrow) located on this island has been monitored by an Argentina research group since 1999/2000 (Skvarca et al 2004 and WGMS, 2010). Nine of these ten years have seen negative mass balances, four substantial losses. …