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(Article of periodic en Anglais - 2014)

Document title

Orogen-scale drainage network evolution and response to erodibility changes: insights from numerical experiments

Authors(s) and Affiliation(s)

GIACHETTA E. (1 2) ; REFICE A. (3) ; CAPOLONGO D. (1) ; GASPARINI N.M. (4) ; PAZZAGLIA F.J. (5) ;
(1) Dip. di Scienze della Terra e Geoambientali, Univ. degli Studi "Aldo Moro", Bari, ITALIE
(2) Dip. di scienze, Univ. degli Studi Roma Tre, Roma, ITALIE
(3) Ist. di Studi sui Sistemi Intelligenti per l'Automazione, Consiglio Nazionale delle Ricerche, Bari, ITALIE
(4) Dept. of Earth and Environmental Sciences, Tulane Univ., New Orleans, ETATS-UNIS
(5) Dept. of Earth and Environmental Sciences, Lehigh Univ., Bethlehem, ETATS-UNIS

Abstract

The AA. use a landscape evolution model, SIGNUM, to investigate the process of fluvial network organization and the evolution of regular ridge-and-valley patterns on simulated mountain ranges. In particular, they investigate the behavior of such patterns when subjected to a perturbation in landscape processes from a previous steady state, resulting from a sudden variation in the pattern of bedrock erodibility, from homogeneous to a gradient. They analyze the time evolution of the mean ratio λ' between the linear spacing of adjacent valleys and the half width of the mountain range. After applying the gradient of bedrock erodibility across the landscape, the AA. observe that λ' first increases and then decreases to a new steady-state value that is smaller than the original value. A detailed analysis of the simulations, through observations of surface "snapshots" at repeated time intervals, allows to gain some insight into the mechanisms governing this fluvial network reorganization process

Source

Article of periodic

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

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

Millesime : 2014, vol. 39, no9 [pp. 1259-1268]

Bibliographic references : 1 p.

Collation : 9 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.3579

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
Refdoc record number (ud4) : 28790446 : Permanent link - XML version
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