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(Article of periodic en Anglais - 2011)

Document title

Rapid incision of a small, coarse and steep fan-delta in response to base-level fall : the case of Nahal Qedem, the Dead Sea, Israel

Authors(s) and Affiliation(s)

STORZ-PERETZ Y. (1) ; BOWMAN D. (1) ; LARONNE J.B. (1) ; SVORAY T. (1) ;
(1) Dep. of Geography and Environmental Development, Ben Gurion Univ. of the Negev, Beer Sheva, ISRAEL

Abstract

The aim of this work is to study the short-term ongoing erosive response to a rapid base-level drop in a small, steep-fronted, erodible fan-delta setting. The work explores the controls of the steep Qedem fan-delta, guided by its clinoform structure, on its incision. Longitudinal profiles of the fan-delta and of its entrenched channel were measured in the field. Sedimentary facies changes (fluviatile, shallow lacustrine and beach) were followed along exposures. The existence of large boulders provided an opportunity to examine the uncertain role of armouring and boulder flux on incision. The field study was combined with digital elevation models (DEMs) that were extracted from pairs of overlapping aerial photos. Maps of erosion and deposition were prepared using a change detection algorithm. The steep front of the fan-delta is suggested to be a main factor controlling the efficient incision

Source

Article of periodic

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

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

Millesime : 2011, vol. 36, no4 [pp. 467-480]

Bibliographic references : 1,5 p.

Collation : 15 fig., 4 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.2066

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2011
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