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You are browsing the archive for southern patagonia ice field retreat Archives - From a Glacier's Perspective.

May 7, 2021

Upsala Glacier Separation from Bertacchi Glacier, Argentina

Upsala Glacier (U) in Landsat images from 1999, 2016 and 2021 illustrating both retreat and the separation from Bertacchi Glacier (B). Cono Glacier (C) is the next tributary to the north. Upsala Glacier is a major outlet glacier of the Southern Patagonia Icefield. The glacier terminates in Lago Argentina and retreated substantially, 7.2 km from 1986-2014 (NASA, 2014). The retreat accelerated after 2008 (Sakakibara et al 2013). From 2014-2019 the …

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June 23, 2020

Upsala Glacier, Argentina Limited Snowcover Cloak as 2020 Melt Season Ended

Upsala Glacier transient snowline (TSL) in Landsat images from April 8 and April 17, 2020. TSL is indicated by purple dots, Point A and B are the same nunataks in each image. On April 8 the TSL almost reaches the divide with Viedma Glacier (V).  Glaciers exist and survive when the majority of the glacier is always snow covered even at the end of the summer melt season. For a …

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July 17, 2017

Lucia Glacier, Chile Retreat Opens New Embayment

Lucia Glacier retreat from 1987 to 2016 in Landsat images.  Red arrows mark 1987 terminus, yellow arrows 2016 terminus, orange arrow an emerging bedrock area, pink arrow a tributary with increased debris cover and purple dots the snowline. Lucia Glacier terminates in Lago Berguez at the northern margin of the Southern Patagonia Icefield.  The lake drains into the Rio Pascua.   Willis et al (2012) observed that between February 2000 and March 2012 the …

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May 23, 2016

Bernardo Glacier, Patagonia, Chile Accelerated Retreat in Expanding Lake Complex

Comparison of 1986 and 2015 Landsat image of Bernardo Glaciers three termini, north, main and south. Red arrows indicate 1986 terminus location and yellow arrows the 2016 terminus location. ¬†Indicating the substantial retreat of each terminus and lake expansion for the north and main terminus, while the lake drained at the southern terminus.¬† Bernardo Glacier is a difficult to reach outlet glacier on the west side of the Southern Patagonia …

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