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Fluxes and storage of fine-grained sediment and associated contaminants in the Na Borges River (Mallorca, Spain)

Auteur(s) et Affiliation(s)

ESTRANY, J.
Dep. of Earth Sciences, Univ. of the Balearic Islands, Palma de Mallorca, Espagne
GARCIA, C.
Dep. of Earth Sciences, Univ. of the Balearic Islands, Palma de Mallorca, Espagne
WALLING, D.E.
Dep. of Geography, College of Life and Environmental Sciences, Univ., Exeter, Royaume-Uni
FERRER, L.
Dep. of Chemistry, Univ. of the Balearic Islands, Palma de Mallorca, Espagne


Description :
Samples of suspended and fine channel bed sediment were used to examine the spatial and temporal variability in the amount of fine-grained sediment and associated contaminants temporarily stored in the Na Borges River in Mallorca and the relationship of such channel storage to the fluxes of fine sediment and associated contaminant through the system. This Mediterranean groundwater-dominated river drains a predominantly agricultural catchment, although urbanisation during the twentieth century has changed the catchment hydrology. A re-suspension technique was used to obtain estimates of channel storage at monthly intervals during the 2004-2005 hydrological year at 8 locations along the main stream. The results demonstrated significant spatial and temporal variability, in response to the influence of urban point sources, agricultural practises, seasonal groundwater interactions and the first-flush effect.


Type de document :
Article de périodique

Source :
Catena (Giessen), issn : 0341-8162, 2011, vol. 87, n°. 3, p. 291-305, nombre de pages : 15, Références bibliographiques : 38 ref.

Date :
2011

Editeur :
Pays édition : Allemagne, Cremlingen-Destedt, Catena

Langue :
Anglais
Droits :
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