On the effect of mid-air collisions on aeolian saltation
Article first published online: 14 JUN 2006
Volume 43, Issue 1, pages 65–76, February 1996
How to Cite
SØRENSEN, M. and McEWAN, I. (1996), On the effect of mid-air collisions on aeolian saltation. Sedimentology, 43: 65–76. doi: 10.1111/j.1365-3091.1996.tb01460.x
- Issue published online: 14 JUN 2006
- Article first published online: 14 JUN 2006
- Manuscript received 19 May 1994; revision accepted 14 June 1995.
The effect of mid-air collisions on aeolian saltation is investigated using concentration profiles and grain velocities predicted by a numerical saltation model. The probability of a mid-air collision is found to be greater at high wind speeds. It is also found that mid-air collisions tend to reduce the number of grain/bed impacts and thus reduce the number of ejecta near the bed; this, in turn, reduces the intensity of mid-air collisions. It is suggested that this feed-back mechanism significantly influences transport rates at high wind speeds.