You are browsing the archive for Northern patagonia glacier retreat Archives - From a Glacier's Perspective.
November 11, 2021
Melt Severs Northern Patagonia Icefield Glacier Connections
Loss of glacier connection between HPN1 and HPN2 in Landsat images from 2000 and 202o at Point A and B. Glacier tongue retreat at Point A from HPN1 and at Point C from HPN2. Formation of 1.4 km2 lake at HPN1. HPN1, HPN2 and HPN3 drain adjacent sections of the the Northern Patagonia Icefield (NPI). HPN2 and HPN3 comprise the Acodado Glacier, with HPN1 being the next glacier to the …
February 6, 2021
Rio Frio Glacier, Chile Retreat-Lake Formation 1990-2020
Rio Frio Glacier (RF) in 1990 and 2020 Landsat images. Red arrow 1990 terminus, yellow arrow 2020 terminus, orange arrow new lakes formed after 2000, purple dots snow line. The “Rio Frio” Glacier is at the headwaters of the Rio Frio a tributary to Rio Palena in Parque Nacionale Corcovado of Palena Province of Chile. Davies and Glasser (2012) noted that overall glaciers in the region lost 14% of their …
December 18, 2020
Is San Quintin Glacier Lake the fastest expanding lake this century in South America?
Landsat images of San Quintin Glacier from 2001 and 2020 indicate the expansion of both Lake A and Lake B due to glacier retreat. The Lake A basin as defined by the transect at the eastern narrow point, yellow line, has a total area of 41 km2 with the lake surface area now comprising 35.1 km2. San Quintin is the largest glacier of the Northern Patagonia Icefield (NPI) at 790 …
March 9, 2020
Acodado Glacier, Chile Retreat Yields Tripling in Lake Area 1987-2020
Acodado Glacier retreat and lake expansion observed in 1987 and 2020 Landsat images. Red arrow is the 1987 terminus locations, orange arrows the 2015 terminus and yellow arrows the 2020 terminus location. Loriaux and Casassa (2013) examined the expansion of lakes of the Northern Patagonia Ice Cap (NPI). From 1945 to 2011 lake area expanded 65%, 66 km2. Rio Acodado has two large glacier termini at its headwater, HPN2 and …
January 22, 2020
Exploradores Glacier Lake Development, Chile
Exploradores Glacier (EX) in 1987 Landsat and 2020 Sentinel image. Points A-E are consistent locations discussed. B=Bayo Glacier. Exploradores Glacier is an outlet glacier at the northeast corner fo the Northern Patagonia Icefield (NPI). Glasser et al (2016) note the recent 100 m rise in snowline elevations for the NPI, which along with landslide transport explains the large increase in debris cover since 1987 on NPI from 168 km2 to …
January 12, 2020
Fiero Glacier, Chile Retreat Lago Fiero Expansion
Fiero Glacier in 1987 Landsat and 2020 Sentinel images. Red arrow indicates 1987 terminus location, yellow arrow 2020 terminus lcoation, and purple dots the snowline. Point A,B and C represent locations where bedrock has expanded. Fiero Glacier is an outlet glacier draining the northeast quadrant of the Northern Patagonia Icefield (NPI) terminating in Lago Fiero. Loriaux and Casassa (2013) examined the expansion of lakes of the Northern Patagonia Ice Cap. …
November 16, 2019
Steffen Glacier, Chile Calving Retreat Acceleration 2019
Steffen Glacier in 1987 and 2019 Landsat images. Red arrow is 1987 terminus location, green arrow 2015 terminus location, yellow arrow 2019 terminus location, orange arrow an area of expanding debris cover and the pink arrow locations indicating water level decline in proglacial lakes by the northwest and midwest secondary terminus. The terminus locations are also noted by red dots for 1987 and yellow dots for 2019. Steffen Glacier is …
December 4, 2018
San Quintin Glacier High Calving Rate Observations in 2018
San Quintin Glacier in 4-16-2017 Sentinel image, red dots indicate terminus location then. Yellow dots the terminus location on 11-10-2018. San Quintin Glacier in 3-20-2018 Sentinel image, pink dots indicate terminus position. San Quintin Glacier in 11-10-2018 Sentinel image. Yellow dots the terminus location on 11-10-2018, pink dots from 3-30-2018 and red dots from 4-16-2017. San Quintin is the largest glacier of the NPI at 790 km2 in . The glacier …
February 19, 2018
Pared Nord Glacier, Chile Retreat & Landslide Transport 1987-2018
Pared Nord Glacier, Chile in 1987 and 2018 Landsat images. The red arrow indicates the 1987 terminus location, yellow arrow the 2018 terminus location and purple arrows areas of expanding rock in the lower accumulation zone. Point A is the front of a wide debris zone from a former landslide, Point B is the front of another landslide deposited debris zone. Point C is a recent landslide deposit on a …
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 …
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.