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July 17, 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 …
July 13, 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 …
April 28, 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 …
April 3, 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, …
January 17, 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 …
November 28, 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 …
November 21, 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 …
May 23, 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 …
May 10, 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 …
February 15, 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 …
Dean of Academic Affairs at Nichols College and Professor of Environmental Science at Nichols College in Massachusetts since 1989. Glaciologist directing the North Cascade Glacier Climate Project since 1984. This project monitors the mass balance and behavior of more glaciers than any other in North America.