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Influence of initial aperture variability on conduit development in hypogene settings

Pure and applied karst geomorphology

Auteur(s) et Affiliation(s)

REHRL, C.
Inst. for Earth Sciences, Univ., Graz, Autriche
BIRK, S.
Inst. for Earth Sciences, Univ., Graz, Autriche
KLIMCHOUK, A.B.
Ukrainian Inst. of Speleology and Karstology, Ukraine
DE WAELE, J.
Dep. of Earth Sciences and Environmental Geology, Italian Inst. of Speleology, Univ., Bologna, Italie
FILIPPONI, M.
Swiss Federal Inst of Technology (EPFL), Lausanne, Suisse
Dep. of Earth Sciences, Univ., Zaragoza, Espagne
PARISE, M.
National Research Council - Inst. of Research for the Hydrogeological Protection, Italie
PLAN, L.
Natural History Museum, Karst and Cave, Vienna, Autriche


Description :
This work aims to examine the influence of the variability of the initial apertures on dissolutional growth of fissures and the evolving cave systems. To this end, the initial apertures were spatially uncorrelated and lognormally distributed and the influence of the coefficient of variation of the aperture data (σ/μ) was investigated in several scenarios on the basis of a set of 4 realisations. It is found that a small degree of heterogeneity leads to cave patterns similar to those obtained with uniform initial apertures. However, with increasing heterogeneity the karstification process decelerates and a significant amount of variability between the different realisations follows.


Type de document :
Article de monographie

Source :
Zeitschrift für Geomorphologie, issn : 0372-8854, 2010, vol. 54, n°. 2, Special issue, p. 237-258, nombre de pages : 22, Références bibliographiques : 54 ref.

Date :
2010

Editeur :
Pays édition : Allemagne, Stuttgart, Gebruder Borntraeger

Langue :
Anglais
Droits :
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