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1 April 2022

Central Andean Glaciers Laid Bare for Last Half of Summer 2022

Volcan Overo in Sentinel image continues to fragment with no retained snowcover this summer, and bedrock expansion at Point A. For an alpine glacier to survive it must remain mostly snowcovered throughout the year, even at the end of the summer. This is one reason for the majesty of glaciated mountains, they shine brightly even in summer.  This year in the Central Andes of Argentina and Chile I have chronicled …

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17 March 2022

Cobre Glacier, Argentina Rapid Retreat and Area Loss in 2022

Cobre Glacier, Argentina in false color Sentinel 2 images from Jnauary 13, 2022 and March 16, 2022. Note the expansion of bedrock area amidst the glacier at Point A, glacier fragmenting at Point B and Point C. Cobre Glacier drains east from Cerro Orejas a 3949 m peak on the Chile-Argentina border and discharges into the Rio Tordillo. The summer of 2022 has been a difficult season for glaciers in …

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28 January 2019

Turbio Glacier Retreat, Argentina Generates New Lake

Turbio Glacier retreat from 1986 to 2018 in Landsat images.  Red arrow is 1986 terminus location, yellow arrow 2018 terminus location and pink arrow glacier across the border in Chile. Turbio Glacier is at the headwaters of the Turbio River, Argentina and flows into Lago Puelo.  The glacier descends east from  Chile/Argentina border at 1500 m descending into a low slope valley at 1300-1000 m.  From 1986-2018 this glacier like …

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15 November 2018

Cerro Tronador Glacier, Argentina Retreat and Lake Formation

Cerro Tronador glaciers in Landsat images from 1985, 1998 and 2018.  A=Alerce, CO=Castana Overo, VN=Ventisquero Negro.  Red arrows mark the 1985 glacier terminus locations, yellow arrows the 2018 terminus location of VN, pink arrow the location of the 2009 dam breach outwash plain deposit, and purple arrow location of a bedrock outcrop.  Cerro Tronador with a summit elevation of 3428 m straddles the Chile/Argentina border east of Lago Todos los …

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9 February 2016

Sierra de Sangra Glacier Retreat, Argentina

Comparison of four outlet glaciers of Sierra de Sangra in Argentina in a 1985 and 2015 Landsat image.  Read arrow is the 1986 terminus location when all terminated in a lake.  By 2015 only one terminates in a lake, yellow arrows.  The Sierra de Sangra Range is located along the Chile-Argentina boundary with the east draining glaciers flowing into the Rio Mayer and then into Lake O’Higgins at Villa O’Higgins. Here …

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