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Closed Access item Glacier development and topographic context

Authors:López-Moreno, Juan I.
Nogués Bravo, D.
Chueca Cía, Javier
Julián Andrés, Asunción
Keywords:Glaciers, Topographic context, Generalized additive models, Binary regression tree models, Maladeta Massif, Central Spanish Pyrenees
Issue Date:30-Oct-2006
Publisher:Wiley-Blackwell
Citation:Earth Surface Processes and Landforms 31(12): 1585-1594 (2006)
Abstract:This paper analyses the topographic context of the remaining glaciated areas in the Maladeta Massif (Central Spanish Pyrenees). These ice-covered surfaces have been incorporated into a geographic information system (GIS) in an attempt at correlating the presence of ice with a range of topographic variables obtained from a digital elevation model. The use of generalized additive models and binary regression tree models enabled us (i) to quantify the spatial variability in the distribution of glaciers attributable to characteristics of the local terrain, (ii) to investigate the interaction between the variables that account for the ice cover distribution and (iii) to map the probability of glacier development. Our results show that although the development of glaciers depends on regional climate conditions, the topographic context is of paramount importance in determining the location, extent, shape and recent evolution of each glacial body. Thus, the joint effect of altitude, exposure to incoming solar radiation, slope and mean curvature is able to explain more than 70 per cent of the observed variance.
Description:10 páginas, 4 figuras, 2 tablas.-- The definitive version is available at www3.interscience.wiley.com
Publisher version (URL):http://dx.doi.org/10.1002/esp.1356
URI:http://hdl.handle.net/10261/35455
ISSN:0197-9337
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Appears in Collections:(IPE) Artículos

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