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- W82764986 abstract "This study focuses on the potential for aeolian abrasion of natural dune sands to produce fine dust particles. Particular attention is given to how the particle size, sorting, colour, shape and the presence of iron oxide coatings and clay skins affect the rate of dust production. Natural dune sand samples were obtained from the crests of active continental dunes from the Simpson Desert and the Channel Country and abraded for 72 hours using a large glass 'test-tube' chamber. The chipping, spalling and breakage of sand grains and the removal of iron oxide coatings and clay skins from grain surfaces produced between 0.41-0.98 % fine particles. Statistical analysis identified that the degree of sorting and grain roundness of a sand sample are the major influences on the dust production rate. Well-sorted, sub-rounded sand samples yielded less dust than poorly sorted angular sand grains. Comparison with previous studies of aeolian abrasion of crushed quartz sands, these natural dune sands produced very low quantities of fine material, but the widespread geographical distribution of desert dune fields makes them potentially a significant source of dust-sized particles on a global scale." @default.
- W82764986 created "2016-06-24" @default.
- W82764986 creator A5030293940 @default.
- W82764986 date "2003-06-01" @default.
- W82764986 modified "2023-09-27" @default.
- W82764986 title "Dust production by sand grain impact during aeolian saltation: an experimental study" @default.
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