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Residence time of alluvium in an aggrading fluvial system

Auteurs :
PHILLIPS, J.D.
MARDEN, M.
GOMEZ, B.

Description :
Relationships between the surface area and age of alluvial deposits were used to estimate the residence time of alluvium in the 2205 km2 Waipaoa River basin, New Zealand. These deposits comprise terrace remnants isolated by downcutting, and Holocene to Recent sediments that are potentially remobilizable by the modern river. Even though the amount of storage is small relative to downstream transport, the majority of the potentially remobilizable alluvium is likely to remain in storage for >100 yr, and is half-life (time for 50 per cent removal) is >2000 yr.


Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 2007, vol. 32, n°. 2, p. 307-316, nombre de pages : 10, Collation : Illustration, Références bibliographiques : 47 ref.

Date :
2007

Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley

Langue :
Anglais
Droits :
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