Distribution of erosion across bedrock channels

Auteurs :
TUROWSKI, J.M.
HOVIUS, N.
HSIEH MENG-LONG,
LAGUE, D.
CHEN MEN-CHIANG,

Description :
Lateral erosion in bedrock rivers is an important control on the shape of channel cross-sections, and the coupling of channels and hillslopes. Recent observations link lateral erosion to the variability of flow. The AA. propose 2 mechanisms to explain this. One is based on changing shear stress distributions within the channel with varying flood level, the other on the competition between cover and tool effects in fluvial bedrock erosion. They assess these processes for the Liwu River, Taiwan, and conclude that cover and tool effects dominate the partitioning of lateral and vertical erosion in this case.


Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 2008, vol. 33, n°. 3, p. 353-363, nombre de pages : 11, Collation : Illustration, Références bibliographiques : 49 ref.

Date :
2008

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