English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/3497
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:


Wind erosion in agricultural soils: an example of limited supply of particles available for erosion

AuthorsLópez Sánchez, María Victoria
KeywordsVertical dust flux
V Dry aggregate size distribution
Roughness length
Issue DateJul-1998
CitationCatena, Volume 33, Issue 1, July 1998, Pages 17-28
AbstractSoil erosion by wind is a complex process since many interacting factors are involved. In addition, wind erosion can show a considerable spatial and temporal variability associated with changes in soil surface conditions. During a wind erosion experiment conducted in August 1995 within an agricultural field of Central Aragón (NE Spain) (López et al., “in press”), a decay in dust emission (vertical dust flux) with an increase in wind speed was observed at the end of the experimental period. A further analysis of the evolution of the vertical flux with time in response to changes in soil erodibility is shown in the present study. The analysis is based on the comparison of the measured flux with the potential flux predicted for identical wind conditions assuming that the supply of erodible material at the soil surface was unlimited. The potential flux was estimated by using the dust emission model developed by Marticorena and Bergametti (1995). The model is based on the parameterization of the threshold wind shear velocity as a function of the aggregate size distribution and the roughness length of soil surface. The results indicate that the observed reduction in soil erodibility with time was probably due to variations in the aggregate size distribution and, more precisely, to a limited supply of erodible particles at the soil surface. This study underlines the need to consider the temporal variability of the surface conditions in wind erosion research and derived models.
DescriptionThe definitive version is available at: http://www.sciencedirect.com/science/journal/03418162
Publisher version (URL)http://dx.doi.org/10.1016/S0341-8162(98)00064-2
Appears in Collections:(EEAD) Artículos
Files in This Item:
File Description SizeFormat 
Mariví1-Catena 1998.pdf103,35 kBAdobe PDFThumbnail
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.