Advertisement

You are browsing the archive for patagonia glacier retreat Archives - AGU Blogosphere.

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 …

Read More >>


12 March 2021

Gorra de Nieve East Glacier, Chile Retreat-Lake Expansion

Gorra de Nieve East Glacier in 1986 and 2021 Landsat images. Red arrow is the 1986 terminus location, yellow arrow is the 2021 terminus location, orange arrows the three main tributaries. The Gorra de Nieve massif is 50 km southwest of Monte San Lorenzo, draining its eastern flank the largest glacier of this massif is unnamed and referred to here as Gorra de Nieve East Glacier. The glacier consists of …

Read More >>


17 February 2021

Tres Puntas Glacier, Chile Loses 50% of its Length this Century

Tres Puntas Glacier, Chile in 1999 and 2021 Landsat imagery. Red arrow is 1999 terminus location, yellow arrow the 2021 location, Point A is where tributaries joined in 1999 and Point B is where an adjacent glacier drains west. Tres Puntas Glacier flow south from Cerro Tres Puntas draining south into Lago O’Higgins in Patagonia. The icefield is east of the Patagonia icefields where Davies and Glasser (2012) noted the …

Read More >>


8 February 2019

Cachalote Glacier, Chile Retreats From Lake and Separates

Cachalote Glacier in a 1984 Landsat image and 2019 Sentinel Image.  Red arrow is 1984 terminus location, yellow arrow the 2019 terminus location and the pink arrow a tributary to the glacier in 1984 that separates. Cachalote Glacier is on the western edge of the Southern Patagonia Icefield, Chile. The glacier is not fed by the main icefield, but is connected to glaciers that are.  The glaciers of the SPI have …

Read More >>


28 December 2018

Erasmo Glacier, Chile Terminus Collapse and Aquaculture

Erasmo Glacier retreat in Landsat image from 1987 and Sentinel image from 2018. Red arrow is 1987 terminus, orange arrow 2016 terminus and yellow arrow 2018 terminus. Points A-D mark areas of expanding bedrock exposure. Cerro Erasmo at 46 degrees South latitude is a short distance north of the Northern Patagonia Icefield and is host to a number of glaciers the largest of which flows northwest from the mountain. This …

Read More >>


6 March 2018

Rio Engaño, Chile Headwater Glacier Retreat GLOF Threat Drops

Comparison of glaciers at the headwaters of Rio Engaño in 1984 and 2018 Landsat images. The 1984 terminus location with red arrows, yellow arrows the 2018 terminus location, purple arrows wind drift patterns. Rio Engaño drains into Lago General Carrera and its headwaters is a group of alpine glaciers.  In March of 1977 one of the glaciers, generated a glacier lake outburst flood (GLOF) that reached a depth of 1.5 m  at the …

Read More >>


7 April 2017

Bernal Glacier, Retreating from Chilean Fjord

Bernal Glacier terminus looking towards Estero las Montañas from Eñaut Izagirre and Camilo Rada. Bernal Glacier drains east from the Sarmiento de Gamboa Range in Southern Patagonia terminating a short distance from the Estero las Montañas. The glacier is in the Alacalufes National Reserve and can be seen from boats traveling up the fjord. Davies and Glasser, (2012) indicate extensive recession of almost all glaciers in the range from 1870-2011. The …

Read More >>


3 April 2017

Dama Blanca Glacier Retreat, Southern Chile

Dama Blanca Glacier in Landsat images from 1986 and 2017.  Red arrow is the 1986 terminus, yellow arrow the 2017 terminus, purple dots the snowline and purple arrows a bedrock ridge. Dama Blanca Glacier drains west from Chile’s Sarmiento de Gamboa Range in Southern Patagonia. terminating in Lago Verde in the Alacalufes National Reserve. Alacalufes NR features kelp rich fjords, Northofagus coastal forests and glacier clad alpine zones. Davies and Glasser, …

Read More >>


21 November 2016

RG150-17.01019 Glacier Retreat, Southern Patagonia Forms Lake

  Retreat of RG150 indicated in Landsat images from 1984, 2001 and 2015.  Red arrow indicates 1984 terminus and yellow arrow 2015 terminus.  RG150 is a 3.5 km long glacier in Bernardo O’Higgins National Park on the western edge of the Southern Patagonia Icefield, Chile.  RG150 is an unnamed glacier given this designation as part of the Randolph Glacier Inventory.  The glacier terminates in a lake that drains into Seno …

Read More >>


23 May 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 …

Read More >>


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 …

Read More >>


21 January 2016

Balmaceda Glacier Retreat, Chile Releases Island

1986 and 2015 Landsat images of the Balmaceda Glacier, Chile region.  Red arrow indicates 1986 ice front, yellow arrow 2015 ice front and purple arrow a tributary that has detached. Balmaceda Glacier (Felicia Glacier) is at the southeastern end of the Southern Patagonia Ice Cap (SPI) field and drains into the Serrano River.  There is another glacier referred to as Balmaceda  that descends steeply almost to the shores of Fiordo Ultima Esperanza, hence Felicia …

Read More >>


17 September 2015

Fraenkel Glacier Retreat, Patagonia, Chile

Fraenkel Glacier drains the west side of the Northern Patagonia Ice Cap (NPI) just south of Glaciar San Quintin. The retreat of this glacier in the last 30 years mirrors that of Gualas and Reichert Glacier, which also terminate in an expanding proglacial lake.   Davies and Glasser (2012) work, had an excellent Figure indicating two periods of fastest recession since 1870, are 1975-1986 and 2001-2011 for NPI glaciers.  They noted …

Read More >>


26 March 2015

North Leones Glacier Retreat and new Landslide, Patagonia, Chile

Jill Pelto, my daughter returning from fieldwork with UMaine in the Falkland Island took a picture last week out the plane window of Leones Glacier of the northern Patagonia Icefield. The picture illustrated two changes worth further examination, and the fact that if you have a glacier picture that you would like more information on let me know. The picture indicates outlet glaciers of the Northern Patagonia icefield fed by …

Read More >>


10 March 2015

Cordillera Lago General Carrera Glacier Retreat, Chile

You know southern Chile has lots of glaciers when an icefield with an area of 132 square kilometers has no named glaciers.  Davies and Glasser (2012) referred to this icefield as Cordillera Lago General Carrera, since it drains into that lake, the icefield is just east of the Northern Patagonia Icefield.   Davies and Glasser (2012)  noted that the icefield has a mean elevation of 1670 m and has declined from an …

Read More >>


19 March 2014

Verde Glacier Retreat, Chile

Verde Glacier is adjacent to Reichert Glacier and drains the north side of the Northern Patagonia Icefield. It is a small glacier compare to many outlet glaciers of the icefield that have been examined in previous posts, Reichert Glacier, Steffen Glacier, Nef Glacier, and Colonia Glacier. Here we examine Landsat imagery during the 1998-2014 period to identify the response of the glacier. The glacier flows from a pair of peaks …

Read More >>


31 October 2013

Glaciar Chico Retreat, Patagonia, Chile

Glaciar Chico drains the east side of the Southern Patagonia Icecap (SPI). Rivera et al (2005) noted that Glaciar Chico had retreated significantly from 1945 to 1976, calving into Brazo Chico, but then retreated slower than most SPI glacier from 1975 to 2001, second image from Rivera et al (2005). Davies and Glasser (2012). noted that Glaciar Chico’s thinning rates are comparable to other glaciers of the SPI, and the …

Read More >>


20 October 2012

Glacier Noroeste Retreat, Gran Campo Nevado, Chile

The Gran Campo Nevado (GCN) is the smallest of the four primary Patagonian Icefields. It is on the Península Muñoz Gamero 200 km to the south of the Southern Patagonia Icefield. The major outlet of this icefield is the Noroeste Glacier. In a recent paper examining the changes in Patagonia glacier from 1870-2010 (Davies and Glasser, 2012), observed that the Gran Campo Nevado icefield lost of its area from 1870-2010, …

Read More >>


31 May 2012

Jorge Montt Glacier Retreat

The Jorge Montt Glacier is one of the main tidewater glaciers of the Southern Patagonia Icefield. The glacier has been the focus of ongoing annual observations by the Laboratorio de Glaciologia at the Center for Scientific Studies, University of Chile. Two recent papers highlight the dramatic changes this glacier is undergoing. The glacier has retreated 19.5 km from 1898-2011 (Rivera et al, 2012a). A recent photograph of the terminus from …

Read More >>


10 October 2011

Onelli Glacier retreat separation, Argentina

The Onelli Glacier drains eastward from the South Patagonia Icefield into Lago Onelli (LO), which then connects to Lago Argentino (LA). Lago Onelli has three main glaciers termininating in the lake Aggassiz (A), Onelli(O)and Bolados Glacier (B). The glacier is noted as 13 km long with an area of 84 square kilometers by the Labratorio de Glaciologia in Chile . Warren and Sugden (1993) note an 1800 meter retreat from …

Read More >>