Monitoring and modelling morphological change in a braided gravel-bed river using high resolution GPS-based survey

Auteurs :
BRASINGTON, J.
RUMSBY, B.T.
MCVEY, R.A.

Description :
This paper presents an alternative approach to the study of three-dimensional morphological dynamics of a divided reach of the gravelly River Feshie, Scotland, in which topographic survey of both exposed and submerged areas of the reach was undertaken using the Global Positioning System (GPS). Preliminary interpretation of channel dynamics in 1998-99 reveals relatively little change to the overall macroscale reach structure. Digital elevation models (DEMs), however, highlight important local changes including the progradation of submerged bar fronts, bar head aggradation and scour along major channel thalwegs and the erosion of fines from sloughs.


Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 2000, vol. 25, n°. 9, p. 973-990, Collation : Illustration, Références bibliographiques : 36 ref.

Date :
2000

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