Assessing the microped size distributions of desert soils erodible by wind
Article first published online: 14 JUN 2006
Volume 43, Issue 5, pages 901–911, October 1996
How to Cite
CHATENET, B., MARTICORENA, B., GOMES, L. and BERGAMETTI, G. (1996), Assessing the microped size distributions of desert soils erodible by wind. Sedimentology, 43: 901–911. doi: 10.1111/j.1365-3091.1996.tb01509.x
- Issue published online: 14 JUN 2006
- Article first published online: 14 JUN 2006
- Manuscript received 4 July 1994; revision accepted 19 February 1996.
The microped size distribution of erodible soils is one of the main factors controlling the emissions of mineral aerosol. To date, the microped size distributions of desert soils in natural field conditions are not well known and thus the existing dust source models cannot be applied to natural sites. Based on dry sieving and elemental analysis of 26 soil samples collected in arid and semiarid regions, it is shown that the microped size distributions of these desert soil samples involve a combination of four major mass size populations. These four size populations correspond to salty soils, fine quartz sand, coarse dune sand and aluminosilicate silt. We show that the microped size distributions of the various desert soils, according to their mineralogical characteristics, can be calculated by a mixture involving two or three of these four populations. The main field of application for this scheme is the characterization of the erodible soil size distributions for modelling the atmospheric dust cycle.