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

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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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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4 November 2012

Chuecon Glacier Retreat, Peru

In the Cordillera Centrale of Peru a series of glaciers extends north from Pariacaca. Pariacaca is the pre-Incan god of water, appropriate name in this dry region, that is draped with glaciers and has numerous alpine lakes. In fact with glacier retreat the number of lakes is increasing. Here we examine the Chuecon Glacier which descends from Nevado Suerococha, and ends in a new lake before draining into the Rio …

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28 October 2012

Manon Glacier Retreat Lake Formation, Peru

In the Cordillera Centrale of Peru a series of glaciers extends north from Pariacaca. Pariacaca is the pre-Incan god of water, appropriate name in this dry region, that is draped with glaciers and has numerous alpine lakes. In fact with glacier retreat the number of lakes is increasing. Here we examine the Manon Glacier which descends from Nevado Suerococha and drains into the Rio Carhuapampa. This area has received little …

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22 March 2012

Arhuey Glacier Retreat, Peru

The Cordillera Blanca, Peru has the greatest concentration of glaciers of any region in the tropics. Glacier mass balance losses and glacier area losses in this range have been large since 1990 (Rivera,INRENA) Laguna Arhueycocha is proglacial lake dammed by a glacier end moraine emplaced by the Arhuey Glacier (AG) during the Little Ice Age. The glacier currently terminates in this lake. Moraine dammed lakes can be a hazard as …

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10 September 2011

Quelccaya Ice Cap Retreat, Peru

Quelccaya Ice Cap is in the of Peru. The first detailed investigations were by Lonnie Thompson at Ohio State examining the ice cap for its potential for ice coring (Thompson, 1980). Three decades later he is still involved in research on this ice cap and others, which combined have yielded one of the finest glacier climate records we have. This is nicely chronicled in Thin Ice by Mark Bowen. This …

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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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29 May 2010

Impact of Artesonraju Glacier, Peru Retreat

Artesonraju Glacier is a 3.3 km long glacier in the Cordillera Blanca of Peru drains west from Nevado Artesonraju. 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 traveled from the upper Artesonraju Lake into …

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