Deposition and storage of fine-grained sediment within the main channel system of the River Tweed, Scotland

Special issue : Changing times-Changing rivers

Auteurs :
OWENS, P.N.
WALLING, D.E.
LEEKS, G.J.L.
THORNE, C.R.
BILLI, P.
RINALDI, M.

Description :
This paper assesses the importance of deposition and storage of fine-grained (c.<150μm) sediment on the floodplains and beds of the main (non-tidal) channels of the River Tweed, Scotland, and two of its tributaries (River Teviot and Ettrick Water). Caesium-137 analysis of floodplain sediment cores has been used to estimate average rates of overbank sedimentation during the last 30 to 40 years. The residence time of the fine-grained sediment stored on the channel bed is probably less than one year, but that of sediment deposited on the floodplain is likely to be considerably longer


Type de document :
Congrès

Source :
International Conference on Geomorphology : session on Fluvial Geomorphology, 4, Bologna, Italie, 1997-08, Earth surface processes and landforms, issn : 0197-9337, 1999, vol. 24, n°. 12, p. 1061-1076, Collation : Illustration, Références bibliographiques : 62 ref.

Date :
1999

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