Particle size distributions of South Tunisian soils erodible by wind

Auteur(s) et Affiliation(s)



Description :
This paper analyses the statistical parameters of the grain size distributions of soils of South Tunisia where different landscapes coexist, with a graduation from semi-arid to arid and including both natural surfaces and agricultural or pastoral areas. Two different methods were used : the logarithmic method of moments and the use of a combination of log-normal statistical functions. Both methods underline the ubiquitous and dominant presence of a very fine sand population, very well sorted which corresponds to the grain size with the potential to be easily eroded by wind. However, in some regions located in Dahars and in the vicinity of mountains, the presence of small aggregates could reduce the erodability of these surfaces.


Type de document :
Article de périodique

Source :
Geodinamica acta, issn : 0985-3111, 2011, vol. 24, n°. 1, p. 37-47, nombre de pages : 11, Références bibliographiques : 23 ref.

Date :
2011

Editeur :
Pays édition : Royaume-Uni, Abingdon, Taylor and Francis