Lichenometry in the Cordillera Blanca, Peru: “Little Ice Age” moraine chronology

Solomina, Olga; Jomelli, Vincent; Kaser, Georg; Ames, Alcides; Berger, Bernhard; Pouyaud, Bernard

doi:10.1016/j.gloplacha.2006.11.016

Cited by 67 publications

(34 citation statements)

References 26 publications

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“…In this regard, lichenometry is a well-proven method for establishing moraine ages extending up to several thousand years. Solomina et al (2007-this issue) present a successful combination of lichenometric and geomorphic studies at Cordillera Blanca, Peru, for dating ages of Little Ice Age moraines. The chronologies were established by recalibration of the growth rate of Rhizocarpon subgenus Rhizocarpon growth curve.…”

Section: Biological Methodsmentioning

confidence: 99%

Current status of Andean glaciers

Casassa

Haeberli

Jones

et al. 2007

Global and Planetary Change

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Section: Biological Methodsmentioning

confidence: 99%

Current status of Andean glaciers

Casassa

Haeberli

Jones

et al. 2007

Global and Planetary Change

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“…After this period of major glacial advance, glaciers in the Tropics continued to retreat with less extensive and minor advances of the LIA during the early 18th century (1720 AD) through the early to mid-19th century (1800-1870 AD). This trend appeared to be synchronous between the Cordillera Real, Bolivia and the Cordillera Blanca, Peru [28,31,[35][36][37][38]. The LIA in the Cordillera Blanca was a period that corresponded with a general glacial advance from the late 16th century to the early 19th century, which was observed from a clear decrease in δ 18 O [39].…”

Section: Introductionmentioning

confidence: 85%

“…To check the outputs of the simulation of paleoglacier reconstruction from the cellular automata model, we compared the result with the LIA moraine positions and valley morphology determined from LiDAR shaded relief images created from its DEMs and 1962 aerial photographs. These are valuable sources of information, indicating the previous glacial extent since the LIA [28,31,33,38]. Also, the surveyed data information of YAN [56,57] was used to compare with the model simulation result.…”

Section: Paleoglacier Extentmentioning

confidence: 99%

“…Knowledge of modern glacier fluctuations in the Cordillera Blanca is relatively poor, with a lack of both observational and multi-proxy reconstructed data compared to other glaciers in the midand high latitudes [28,33,34]. However, efforts to reconstruct the chronology of tropical Andean LIA glaciers using lichenometry show that moraines corresponding to the LIA maximum glacial advance date to the 17th century on the Pacific-draining slopes [31,[35][36][37][38]. After this period of major glacial advance, glaciers in the Tropics continued to retreat with less extensive and minor advances of the LIA during the early 18th century (1720 AD) through the early to mid-19th century (1800-1870 AD).…”

Section: Introductionmentioning

confidence: 99%

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Evaluating Glacier Volume Changes since the Little Ice Age Maximum and Consequences for Stream Flow by Integrating Models of Glacier Flow and Hydrology in the Cordillera Blanca, Peruvian Andes

Huh

Mark

Baraër

et al. 2018

Water

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Evaluating the historical contribution of the volume loss of ice to stream flow based on reconstructed volume changes through the Little Ice Age (LIA) can be directly related to the understanding of glacier-hydrology in the current epoch of rapid glacier loss that has disquieting implications for a water resource in the Cordillera Blanca in the Peruvian Andes. However, the accurate prediction of the future glacial meltwater availability for the developing regional Andean society needs more extensive quantitative estimation from long-term glacial meltwater of reconstructed glacial volume. Modeling the LIA paleoglaciers through the mid-19th century (with the most extensive recent period of mountain glacier expansion having occurred around 1850 AD) in different catchments of the Cordillera Blanca allows us to reconstruct glacier volume and its change from likely combinations of climatic control variables and time. We computed the rate and magnitude of centennial-scale glacier volume changes for glacier surfaces between the LIA and the modern era, as defined by 2011 Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) Global Digital Elevation Model Version 2 (GDEM V2) and 2008 Light Detection and Range (LiDAR) data. The model simulation showed good agreement with the observed geomorphic data and the volume and surface area (V-S) scaling remained within the 25% error range in the reconstructed simulation. Also, we employed a recently demonstrated approach (Baraër, M. et al.) to calculate meltwater contribution to glacierized catchment runoff. The results revealed multiple peaks of both mean annual and dry season discharge that have never been shown in previous research on the same mountain range.

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“…Tens of GLOFs have occurred in the Cordillera Blanca (e.g. Ames, ; Zapata, ), the highest mountain range in Peru, since the end of the last significant glacier advance – the Little Ice Age – culminating here in the 19th century (Thompson et al ., ; Solomina et al ., ). Some of these events claimed hundreds of lives and caused significant material damage (Lliboutry et al ., ; Zapata, ; Emmer et al ., ).…”

Section: Introductionmentioning

confidence: 99%

Hazard mitigation of glacial lake outburst floods in the Cordillera Blanca (Peru): the effectiveness of remedial works

Emmer

Vilímek

Zapata

2016

J Flood Risk Management

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Almost 40 glacial lakes have been remediated in the Cordillera Blanca since the 1940s by implementing different types of structural measures to prevent (mitigate) glacial lake outburst floods. These are (1) open cuts; (2) artificial dams; (3) tunnels; and their combinations. The first part of the paper provides an overview and description of the implemented remedial works. In the second part, the effectiveness of these remedial works is evaluated on the basis of a comparison of the quantified susceptibility of nine selected lakes to outburst floods before and after remediation. Our investigation showed that different types of remedial works have different impacts on the susceptibility of a given lake to outburst floods and are effective for different scenarios (causes and subsequent mechanisms) of outburst floods. Hazard management implications in the framework of risk management and ongoing geo‐environmental change are also discussed.

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Lichenometry in the Cordillera Blanca, Peru: “Little Ice Age” moraine chronology

Cited by 67 publications

References 26 publications

Current status of Andean glaciers

Current status of Andean glaciers

Evaluating Glacier Volume Changes since the Little Ice Age Maximum and Consequences for Stream Flow by Integrating Models of Glacier Flow and Hydrology in the Cordillera Blanca, Peruvian Andes

Hazard mitigation of glacial lake outburst floods in the Cordillera Blanca (Peru): the effectiveness of remedial works

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