Advertisement

You are browsing the archive for chile glacier melt Archives - Page 2 of 3 - AGU Blogosphere.

12 January 2018

Glaciar Olvidado, Chile Retreat Lake Expansion 1985-2017

Glaciar Olvidado (O) retreat illustrated in 1985 and 2017 Landsat images.  Red arrow is 1985 terminus location, yellow arrow is 2017 terminus location and purple dots are the snowline.  This illustrates an 1800 m retreat.  Glaciar Olvidado (G) is a glacier in the southeast portion of the Southern Patagonia Icefield (SPI), adjacent to Grey Glacier (G).  The glacier terminates in a proglacial lake. Rivera and Casassa (2004) report the glacier terminating …

Read More >>


21 December 2017

Queulat Norte Glacier, Chile Retreat Creates Two Lakes

 Queulat Norte Glacier in 1987, 2000 and 2016 Landsat images indicating retreat from 1987 (red arrow) to 2016 (yellow arrow). Green arrow indicates former tributary, orange arrow area of  new bedrock exposure and pink arrow expanding medial moraine. Two new lakes have formed due to the 1950 m retreat.  Nevado Queulat, Chile is the centerpiece of the Queulat National Park in the Aysen Region.  The largest glacier draining the substantial ice …

Read More >>


17 July 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 …

Read More >>


13 July 2017

Gabriel Quiroz Glacier, Chile Retreat Forms New Lake

Gabriel Quiroz Glacier, Chile in 1987 and 2016 Landsat images illustrates the retreat.  Red arrow is 1987 terminus, yellow arrow the 2016 terminus, purple arrow a retreating northern tributary and purpe dots the snowline. Gabriel Quiroz Glacier is a northern outlet glacier of the Southern Patagonia Icefield that drains into the Rio Pascua.  The glacier in 1987 terminated within 250 m of Lago Gabriel Quiroz.  Willis et al (2012) observed that between February 2000 …

Read More >>


28 April 2017

Benito Glacier, Chile Retreats 2km 1987-2015

Benito Glacier comparison in 1987 and 2015 indicating the terminus position in 1987 red arrows, yellow arrows the 2015 terminus positions, purple arrows where glacier thinning is expanding bedrock areas, the snowline is indicated by purple dots.  Glacier Benito is a temperate outlet glacier on the west side of the North Patagonian Icefield the glacier is south of  Fraenkel Glacier and north of Acodado Glacier. Loriaux and Casassa (2013) examined the expansion of lakes …

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 >>


17 January 2017

Erasmo Glacier, Chile Terminus Collapse

Erasmo Glacier, Chile, comparison in 1987 and 2016 Landsat images.  The red arrow indicates the 2016 terminus and the yellow arrow the 1987 terminus location.  Purple dots indicate the snowline and purple arrows locations of upglacier thinning. 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 flow northwest from the …

Read More >>


28 November 2016

Hornopirén Glaciers, Chile in Spectacular Retreat

Landsat comparison of Rio Blanca Glaciers in Hornopirén National Park, Chile from 1985 to 2016.  Red arrow 1985 terminus, yellow arrow 2016 terminus, purple dots the snowline and purple arrows expanding bedrock areas amidst the glacier. Hornopirén National Park is in the Los Lagos region of Chile.  The park is host to a number of glaciers that are in rapid retreat.  Davies and Glasser (2012) mapped the area of these glaciers …

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 May 2016

Glacier Nef, Patagonia, Chile retreat 1987-2016.

Comparison of 1987 and 2015 Landsat images of Nef Glacier at right and Cachet Glacier at left.  Indicating retreat of Nef Glacier from red arrows to yellow arrows of 1.8 km and development of a new lake at the terminus. Purple arrows indicate upglacier thinning leading to separation of glacier tributaries.  Glacier retreat and thinning is particularly strong in the Patagonian icefields of South America. The two largest temperate ice bodies of …

Read More >>


15 February 2016

San Quintin Glacier, Chile terminus disintegration 1987-2015

Landsat comparison of San Quintin Glacier in 1987 and 2015: red arrow indicates 1987 terminus location, yellow arrow indicates 2015 terminus location of the three main termini, and the purple arrow indicates upglacier thinning. San Quintin is the largest glacier of the NPI at 790 km2 in 2001 (Rivera et al, 2007).  The glacier extends 50 km from the ice divide in the center of the ice cap.  The peak …

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 >>


13 October 2015

Colonia Glacier, Chile Retreat and Periodic Lake Outbursts

  Comparison of 1987 and 2015 Landsat images indicating retreat from red arrows to yellow arrows of 2.5 km and development of a new lake at the terminus. orange arrow indicates glacier dammed lake that fills and empties periodically.  Colonia Glacier drains east from the Northern Patagonia Icefield feeding the Baker River, Chile. It is the largest glacier draining east from the NPI.  A comparison of the 1987  and 2015 images indicate …

Read More >>


21 September 2015

Acodado Glacier, Chile Rapid Retreat 1987-2015

Landsat image comparison 1987 and 2015 Loriaux and Casassa (2013) examined the expansion of lakes of the Northern Patagonia Ice Cap. From 1945 to 2011 lake area expanded 65%, 66 square kilometers. Rio Acodado has two large glacier termini at its headwater, HPN2 and HPN3. that are fed by the same accumulation zone and comprise the Acodado Glacier. The glacier separates from Steffen Glacier at 900 m. The lakes at …

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 >>


25 April 2015

Calbuco Volcano Glaciers, Chile

Calbuco Volcano in Chile erupted this week.  It has been noted that significant pyroclastic flows/lahars have been observed travelling down the Rio Blanco fed in part by glacier melt.  Here we examine the glaciers on Calbuco.  We start with a 2012 Google Earth image that provides the clearest view.  There are three primary glaciers, the main summit ice cap , a glacier below the western rim, that is not significantly …

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 >>


19 March 2015

Downwasting Tributary-Glacier Dammed Lake Formation at HPN4 Glacier, Patagonia, Chile

We often are more concerned with what is happening at the terminus of a glacier; however, often key changes are happening up glacier some distance. This is the case with the following example. The Northern Patagonia Icefield (Hielo Patagónico Norte, HPN) is one of the two main icefields in Patagonia.  The remoteness of the region is evidenced by the number of significant lakes and glaciers that remain unnamed.  This remoteness has …

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 >>