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(Article of periodic en Anglais - 2014)

Document title

Medium-term fluvial island evolution in a disturbed gravel-bed river (Piave River, Northeastern Italian Alps)

Authors(s) and Affiliation(s)

PICCO L. (1) ; MAO L. (2) ; RAINATO R. (1) ; LENZI M.A. (1) ;
(1) Dept. of Land, Environment, Agriculture and Forestry, Univ., Padova, ITALIE
(2) Dept. of Ecosystems and Environment, Pontifica Univ. Catolica, Santiago, CHILI

Abstract

Plan-form changes of river features since 1960 were analyzed using aerial photographs, and a LiDAR was used to derive the maximum, minimum and mean elevation of island surfaces, and maximum and mean height of their vegetation, in a 30-km-long reach of the gravel-bed Piave River. The results suggest that established islands lie at a higher elevation than building and pioneer islands, and have a thicker layer of fine sediments deposited on their surface after big floods. After the exceptional flood in 1966 there was a moderate increase in island numbers and extension, followed by a further increase from 1991, due to a succession of flood events in 1993 and 2002, as well as a change in the human management relating to the control of gravel-mining activities. The narrowing trend (1960–1999) of the morphological plan form certainly enhanced the chance of islands becoming established and this explains the reduction of the active channel, the increase in established islands and reduction of pioneer islands

Source

Article of periodic

published at : Geografiska annaler. Series A. Physical geography / ISSN 0435-3676 / CODEN GAPGAP

Editor : Svenska sällskapet för antropologi och geografi, Stockholm - SUEDE (1965)

Millesime : 2014, vol. 96, no1 [pp. 83-97]

Bibliographic references : 1 p.

Collation : 17 fig., 3 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 2704 A

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1111/geoa.12034

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
Refdoc record number (ud4) : 28337860 : Permanent link - XML version
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