A comparison of average rates of alluvial erosion between the south-western and south-eastern United States

Auteur(s) et Affiliation(s)



Description :
This study discusses regional differences in hydraulic driving forces and substrate resistance and tests the hypothesis that regional differences exist in average rates of channel incision, bank erosion, and knickpoint retreat. Specifically, the AA. hypothesize that erosion rates are higher in south-western US streams and reason that this is because of greater flood magnitudes and limited substrate resistance. A review of the literature, however, indicates that intra-regional differences are larger than inter-regional differences and that average rates in the south-western US are either statistically similar or less than the rates in parts of the south-eastern US. This could either be a result of strong intra-regional hydroclimatic and substrate variability or because average erosion rate may not be an appropriate metric for inter-regional comparisons because of the variability between case studies associated with the field methods to measure erosion.


Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 2010, vol. 35, n°. 4, p. 447-459, nombre de pages : 13, Références bibliographiques : 2,5 p.

Date :
2010

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