Methodological proposal for the analysis of the evolution of glaciers since the Little Ice Age and its application in the Tröllaskagi Peninsula (northern Iceland)

  1. J.M. Fernández-Fernández 1
  2. N. Andrés 1
  1. 1 Universidad Complutense de Madrid
    info

    Universidad Complutense de Madrid

    Madrid, España

    ROR 02p0gd045

Revue:
Cuadernos de investigación geográfica: Geographical Research Letters

ISSN: 0211-6820 1697-9540

Année de publication: 2018

Volumen: 44

Número: 1

Pages: 69-97

Type: Article

DOI: 10.18172/CIG.3392 DIALNET GOOGLE SCHOLAR lock_openDialnet editor

D'autres publications dans: Cuadernos de investigación geográfica: Geographical Research Letters

Objectifs de Développement Durable

Résumé

En este trabajo se propone una secuencia metodológica para estudiar el impacto del cambio climático en los glaciares y su respuesta, así como para utilizar los glaciares como indicadores de evolución climática. Nuestra propuesta integra diferentes técnicas centradas en: la cartografía de la extensión de los glaciares en diferentes fechas, las mediciones de las variaciones del frente, el cálculo de superficies y volúmenes, el análisis de la altitud de la línea de equilibrio glaciar (ELA), el tratamiento estadístico de series climatológicas, y la aplicación de modelos glacio-climáticos que relacionan temperatura y precipitación, y posibilitan las reconstrucciones paleoclimáticas. Esta propuesta se ha experimentado en el seguimiento de tres glaciares libres de derrubios altamente sensibles de la península de Tröllaskagi (norte de Islandia) desde el final de la Pequeña Edad de Hielo (PEH), y los resultados evidencian un retroceso medio de 1,3 km, así como una reducción de superficie y volumen del 25% y 33%, como consecuencia del calentamiento iniciado al final de la PEH. La aplicación de los modelos glacio-climáticos sugiere un clima hasta un 49% menos húmedo en el máximo de la PEH. La revisión bibliográfica de los métodos empleados nos permite validar nuestra propuesta metodológica y los resultados obtenidos, y garantiza su aplicación en áreas de estudio contrastadas.

Information sur le financement

This paper was funded by the projects CGL2012-35858 and CGL2015-65813-R (Spanish Ministry of Economy and Competitiveness) and Nils Mobility Program (EEA GRANTS), and with the help of the Research Group of High Mountain Physical Geography (Complutense University of Madrid). José M. Fernández-Fernández received a grant from the FPU program (Spanish Ministry of Education, Culture and Sport; reference FPU14-06150).

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