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El glaciar de La Madaleta (Pirineo Central Español): Análisis de su evolución desde la Pequeña Edad del Hielo y su relación con factores climáticos

Authors: Chueca Cía, Javier; Julián Andrés, Asunción; Saz-Sánchez, Miguel Ángel; Creus Novau, J.; López-Moreno, Juan I.;

El glaciar de La Madaleta (Pirineo Central Español): Análisis de su evolución desde la Pequeña Edad del Hielo y su relación con factores climáticos

Abstract

[ES] Se analiza el proceso evolutivo del glaciar de la Maladeta (Macizo de la Maladeta-Aneto; Pirineo central español), desde el último máximo de la Pequeña Edad del Hielo hasta la actualidad. Partiendo de distintos elementos disponibles (restos morrénicos, documentos gráficos), se ha reconstruido y cartografiado su extensión en las nueve etapas para las que se cuenta con documentación de validez cronológica contrastada (1820-30; 1857; 1901-04; 1914-20; 1934-35; 1957; 1981; 1990; 1997-99). Esta información se compara con datos climáticos básicos (evolución de temperaturas y precipitaciones), reconstruidos en la zona para ese período mediante la utilización de técnicas dendroclimáticas y complementados por el análisis de registros instrumentales procedentes de varios observatorios surpirenaicos. Los resultados obtenidos permiten confirmar la estrecha relación entre los factores climáticos mencionados y la evolución del glaciar de la Maladeta, que ha pasado de tener una superficie de 152,3 ha en 1820-30, a tan sólo 54,5 ha (la suma de los dos cuerpos actuales) en 1997-99, el 35,7% de la inicial.

[EN] The evolution of Maladeta glacier (Maladeta-Aneto massif; Spanish Central Pyrenees) is analized in this work since the last Little Ice Age maximum till today. Using different elements (morainic deposits, graphic documents), the extent of the glacier has been reconstructed and mapped for the nine stages in which reliable chronological data exist (1820-30; 1857; 1901-04; 1914-20; 1934-35; 1957; 1981; 1990; 1997-99). This information is compared with basic climatic data (temperature and precipitation evolution), reconstructed for the zone for that period by using dendroclimatic techniques and complemented by recent instrumental records of several south-pyrenean weather stations. The results thus obtained confirm the control of the above mentioned climatic factors in the evolution of Maladeta glacier, which has receded from an extent of 152.3 ha in 1820-30 to 54.5 ha in 1997-99, a 35.7% of the initial value.

Este trabajo forma parte de los proyectos H- 9007 (Estudio de la dinámica de los glaciares del Pirineo aragonés), financiado por el Gobierno de Aragón; UZ2002-HUM-01 (Estudio de la dinámica glaciar en el Pirineo español en el contexto del cambio climático: correlación con re c o n s t ru c c i o - nes dendroclimáticas termo-pluviométricas), financiado por la Universidad de Zaragoza; ECLIPSE (E n v i ronnement et climat du passé: histoire et évo - l u t i o n), financiado por el CNRS; y CLI96-1862 (P recipitaciones y temperaturas de la mitad septen - trional española a partir del siglo XVII. R e c o n s t rucciones dendro c l i m á t i c a s), financiado por la CICYT. Los autores agradecen igualmente las interesantes sugerencias efectuadas por los evaluadores del trabajo, Dres. J.L. Peña y J. Bordonau.

Peer reviewed

Keywords

Deglaciation, Artículos de Investigación, deglaciación, Maladeta glacier, Glaciar de la Maladeta, Pirineo central español, Climate, clima, Clima, Spanish Central Pyrenees, Deglaciación

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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
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