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You are browsing the archive for Argentina Glacier Retreat Archives - AGU Blogosphere.

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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4 March 2022

Volcan San Jose, Central Andes Glacier Decline and Snowcover Loss in 2022.

Volcan San Jose, Chile/Argentina Glacier change in Landsat 5-7-9 images from 1991, 2001 and 2022. Red arrows indicate the 1991 terminus location of three glaciers draining from the summit region, including Nieves Negras Glacier (NN). Point A-D are locations of expanding bedrock amidst the glacier.  Snowpack very limited in 2022. Volcan San Jose is a 5850 m glacier draped volcano that straddles the Argentina-Chile border. Here we focus on the …

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25 February 2022

Bajo del Plomo Glacier, Argentina is 100% Bare Ice in February 2022

Bajo del Plomo Glacier in 2018 and 2022 Sentinel images illustrating the lack of any retained snowpack in 2022 and the expansion and emergence of bare rock areas amidst the glacier at Point A-D. Bajo del Plomo Glacier at 7 km in length is one of two large glaciers at the headwaters of the Rio Plomo, Argentina, which is a tributary to Rio Tupungato and then Rio Mendoza. Glaciers in …

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24 January 2022

Volcan Overo, Argentina Glaciers No Retained Snowcover at Midsummer

Volcan Overo glaciers in Sentinel images from January-2017, 2021 and 2022 illustrating fragmentation and no retained snowcover in 2022 with half the summer to go. Volcan Overo is a 4619 m high Andean mountain in Argentina with a relatively low sloped broad summit region above 4000 m. This mountain has been the site of sulfur mining, with both an old tram and mining road leading to the summit region. The …

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7 May 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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23 June 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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30 March 2020

San Lorenzo Sur Glacier, Argentina Retreat 1986-2020

San Lorenzo Sur Glacier in Landsat images from 1986 and 2020.  Yellow arrow is the 2020 terminus location, red arrow the 1986 terminus location, purple dots indicate the snowline. Point A indicates a location at 1400 m where debris cover has expanded. San Lorenzo Sur Glacier is the main eastern outlet glacier of the Monte San Lorenzo range on the Chile-Argentina border. This Argentina glacier flows east from the border …

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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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20 April 2018

Lago Cholila, Argentina Headwaters Glacier Retreat Lake Formation

Changes in four glacier at the headwaters of Rio Tigre, Argentina in 1987 and 2017 Landsat images.  The red arrow indicate the 1987 terminus position and the yellow arrow the 2017 terminus position.  Glaciers form the headwaters for Lago Cholila which drains into  Futaleufu River in west central Argentina .  Davies and Glasser (2012) mapped the glaciers in the Hornopiren region just to the northwest and Parque Nacionale Corcovado just to the …

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10 March 2016

Lago Onelli, Argentina trio of Glaciers Retreat and Separate

Onelli Glacier (O), Belados Glacier (B) and Agassiz Glacier (A) compared in Landsat images from 1985 to 2016.  The red arrow indicates the 1985 terminus location and yellow arrow is the 2016 terminus location.  The Onelli Glacier drains eastward from the South Patagonia Icefield (SPI) into Lago Onelli (LO), which then connects to Lago Argentino. Lago Onelli has three main glaciers terminating in the lake Agassiz (A), Onelli(O) and Bolados …

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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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