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

4 June 2020

Pacliash Glacier, Peru Retreat and Lake Expansion

Retreat and lake expansion at Pacliash Glacier (PH) and Palcaruja Glacier in the Cordillera Blanca, Peru illustrated with 1988, 2000 and 2019 Landsat images.  Red arrow is the 1988 terminus, yellow arrow the 2019, purple dots are the snowline. Pacliash Glacier is in the Cordillera Blanca of Peru, on the northeast flank of Palcaraju and Tocllaraju had until recently terminated in Laguna Pacliashcocha.  This region has seen substantial glacier retreat …

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8 January 2018

Safuna & Arhuey Glacier, Peru Retreat from Lakes

Safuna Glacier (S) and Arhuey Glacier (A) in 1992 and 2017 Landsat images indicating glacier retreat from the 1992 terminus red arrow to the 2017 terminus position yellow arrow.  Snowline indicated by purple dots. Safuna Glacier (S) is at the northern end of the Cordillera Blanca Range, Peru flowing north from Nevados Pucajirca.  Arhuey Glacier (A) is adjacent to Safuna and flows west formerly terminating in Arhuey Lagunacocha impounded by …

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29 March 2017

Vallunaraju Glacier Retreat, Peru 1992-2016

Vallunaraju Glacier comparison in Landsat images from 1992, 1995 and 2016.  Red dots represent the 1992 margin and yellow dots the 2016 margin The Cordillera Blanca, Peru has 27 peaks over 6,000m, over 600 glaciers and is the highest tropical mountain range in the world. Glaciers are a key water resource from May-September in the region (Carey, 2010).  Mark Carey describes the importance of glacier runoff to the Andean society in …

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23 July 2015

Artesonraju Glacier, Peru Retreat & Lake Development

Artesonraju Glacier is a 3.3 km long glacier in the Cordillera Blanca of Peru drains west from Nevado Artesonraju. It is fed by steep heavily crevassed slopes. The glacier feeds both Lake Artesonraju, a new lake that formed after 1930 and Lago Paron. The two lakes are dammed by glacier moraines and together have posed a hazard of a glacier dammed lake outburst. In 1951 an outburst of water and alluvium …

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24 October 2013

Yanashallasa Glacier Retreat, Peru

Yanashallasa Glacier is near the southern end of the Cordillera Blanca in Peru. The glacier feeds the Rio Santa river, which provides irrigation for substantial agricultural acreage. Marks and Seltzer (2003) identify that at least 30% of the runoff comes from glaciers, rising considerably during the dry season. The glacier retreat in the region with a 22% area loss from 1970-2003 (Racoviteanu et al , 2008), will lead to continued …

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20 October 2013

Quebrada Carhuascancha Glacier Retreat, Peru

Quebrada Carhuascancha Glacier is in the Cordillera Blanca of Peru, draining the northeastern slopes of Huantsan. A glacier lake outburst flood was reported in the valley in 1965 from a landslide into one of the lakes. The region has experienced ongoing glacier loss with Racoviteanu et al (2008) noting a 22% loss in area from 1970-2003 in the Cordillera Blanca. They further observed an average rise of terminus elevation by …

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2 December 2010

Llaca Glacier Retreat, Peru

The Cordillera Blanca, Peru has 27 peaks over 6,000m, over 600 glaciers and is the highest tropical mountain range in the world. Glaciers are a key water resource from May-September in the region, Mark (2008). The glaciers in this range have been retreating extensively from 1970-2003, GLIMS identified a 22% reduction in glacier volume in the Cordillera Blanca. Vuille (2008) noted that the retreat rate has increased from 7-9 meters …

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