A preliminary investigation of the integration of modelled floodplain hydraulics with estimates of overbank floodplain sedimentation derived from Pb-210 and Cs-137 measurements

Auteurs :
SIGGERS, G.B.
BATES, P.D.
ANDERSON, M.G.
WALLING, D.E.
HE, Q.

Description :
This paper investigates the possibility of linking finite element modelled two-dimensional hydraulics with floodplain sedimentation rates derived from radionuclide dating techniques. The TELEMAC-2D system is used to simulate the full dynamic velocity vector and water depth distributions for a 1 in 12 year flood event for the River Culm, Devon. These are compared to patterns of medium-term (30-100 years) sedimentation rates and a degree of correlation is found to exist. This information is used to comment on the complexity of flow and sediment deposition interactions in floodplain environments.


Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 1999, vol. 24, n°. 3, p. 211-231, Collation : Illustration, Références bibliographiques : 50 ref.

Date :
1999

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