A cellular model of Holocene upland river basin and alluvial fan evolution

Auteurs :
COULTHARD, T.J.
MACKLIN, M.G.
KIRKBY, M.J.

Description :
In this paper the CAESAR (Cellular Automaton Evolutionary Slope And River) model is used to simulate the Holocene development of a small upland catchment and the alluvial fan at its base. The model operates at a 3 m grid scale and simulates every flood over the last 9200 years, using a rainfall record reconstructed from a peat bog wetness indices and land cover history derived from palynological sources. Model results show that the simulated catchment sediment discharge above the alluvial fan closely follows the climate signal, but with an increase in the amplitude of response after deforestation. The important effects of sediment storage and remobilization are shown.


Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 2002, vol. 27, n°. 3, p. 269-288, nombre de pages : 20, Collation : Illustration, Références bibliographiques : 37 ref.

Date :
2002

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