Initial grain motion under oscillatory flow: A comparison of some threshold criteria |
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| Authors: | J K Rigler M B Collins |
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| Institution: | 1. Department of Oceanography, University College, Singleton Park, SA2 8PP, Swansea, South Wales, UK
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| Abstract: | Experimental data are described on the threshold of transport of quartz, ilmenite, and cassiterite grains under oscillatory flow in a flume and the results are compared to those of other investigators. The results show that for a given particle size, critical shear stress (τcrit) increases with increasing wave period and that τcrit increases with both grain size and grain density. These data are compared with prediction equations. |
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