Controls on slope-to-channel fine sediment connectivity in a largely ice-free valley, Hoophorn Stream, Southern Alps, New Zealand

Auteur(s) et Affiliation(s)

BEEL, C.R.

Dep. of Geography, Univ. of Otago, Dunedin, Nouvelle-Zelande

ORWIN, J.F.

Dep. of Geography, Univ. of Otago, Dunedin, Nouvelle-Zelande

HOLLAND, P.G.

Dep. of Geography, Univ. of Otago, Dunedin, Nouvelle-Zelande

Description :
The AA. monitored fine sediment mobilization on a slope segment hydrologically connected to a stream in the ice-free Hoophorn Valley, New Zealand. Gerlach traps were installed in ephemeral slope channels to trap surficial material mobilized during rainfall events. Analyses of sediment-discharge hysteresis patterns were used to show if fine sediment connectivity was occuring between the monitored slope segment and the stream channel , and to permit identification of sediment sources within the catchment as a whole. Although the data set covers a relatively short-time period, this systematic approach enabled overall assessment of current controls on slope-to-channel fine sediment connectivity, and its implications for how the sediment transfer system in a formerly glacierized landscape may change over time.

Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 2011, vol. 36, n°. 7, p. 981-994, nombre de pages : 14, Références bibliographiques : 1 p.

Date :
2011

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

Langue :
Anglais