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(Article of periodic en Anglais - 2013)

Document title

Alignment of stone-pavement clasts by unconcentrated overland flow – implications of numerical and physical modelling

Authors(s) and Affiliation(s)

DIETZE M. (1) ; GROTH J. (2) ; KLEBER A. (1) ;
(1) Inst. of Geography, Technische Univ., Dresden, ALLEMAGNE
(2) Inst. of Geography, Leopold-Franzens Univ., Innsbruck, AUTRICHE

Abstract

Here, the finding of lateral processes contributing to stone-pavement evolution is supported by numerical modelling and physical experiments. These unequivocally show that unconcentrated overland flow can transport clasts to form a closely packed stone mosaic with characteristics similar to those of natural stone pavements. Monte Carlo runs confirm the natural scatter and allow characterization of the control parameters of clast orientation. The model explains up to 70% of the natural variance. It is further validated by flume experiments, which confirm model predictions of single object orientation angles. Experiments with multiple objects yield artificial stone pavements with properties similar to those found in the field. However, stone pavements represent information since the last surface disturbance only. This has to be considered when using them as age indicators

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2013, vol. 38, no11 [pp. 1234-1243]

Bibliographic references : 2 p.

Collation : 6 fig., 1 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3365

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
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