Abstract
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.
Original language | English |
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Pages (from-to) | 65-76 |
Number of pages | 12 |
Journal | Sedimentology |
Volume | 43 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1 Feb 1996 |