You are browsing the archive for northern patagonia icefield glacier melt 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 …
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 …
April 15, 2019
Northern Patagonia Icefield High Equilibrium Line Altitude in 2019
Northern Patagonia Icefield Landsat view on 4/6/2019. Transient snowline indicated on individual glaciers with purple dots. Clockwise, L=Leones, So=Soler, N=Nef, Ca=Cachet, Co=Colonia, PN=Pared Nord, PS=Pared Sur, H4=HPN4, St=Steffen, A=Acodado, B=Benito, H1=HPN1, Sq=San Quintin. The Northern Patagonia Icefield from 1987-2015 decreased in area, while debris cover area expanded and the size of proglacial lakes expanded (Glasser et al 2016). The icefield area declined from 4113 to 3887 km2, debris cover increased …
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 …
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.