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Formation and dynamics of sand dunes.
| Content Provider | CiteSeerX |
|---|---|
| Author | Bjorkman, Nina Brubaker, Nicholas Rachin, Daniel |
| Abstract | The formation of aeolian sand structures, including ripples and dunes, can be represented by a mathematical model. A computer simulation that utilizes the saltation and surface creep process is able to produce a field of sand ripples that becomes evenly spaced over time. When there is a disturbance in the sand field, the wind flow eventually restores the sand field to its uniform spacing property. Alternating wind currents cause the ripples to flow back and forth depending on the wind direction. Then after taking into account the secondary and reverse eddy flow and avalanches that may occur on the lee slope, a field of sand dunes is formed from an initial flat surface. Then when the initial surface is set as a Gaussian distribution, the formation of a Barchan dune can be seen. 1 |
| File Format | |
| Access Restriction | Open |
| Subject Keyword | Sand Dune Sand Field Initial Surface Wind Flow Surface Creep Process Lee Slope Wind Direction Reverse Eddy Flow Uniform Spacing Property Aeolian Sand Structure Mathematical Model Computer Simulation Initial Flat Surface Wind Current Gaussian Distribution Barchan Dune Sand Ripple |
| Content Type | Text |
