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 …

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 …

March 30, 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 …

January 28, 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 …

November 15, 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 …

April 20, 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 …

March 10, 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 …

February 9, 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 …