Abstract
Results are presented of a model which simulates the behaviour of depth-averaged tidal currents, transport of suspended sediment and bottom changes in an embayment. The basic state of this model, a spatially uniform tide over a bottom with constant slopes, turns out to be unstable with respect to bottom perturbations if the width-to-depth ratio and bottom friction are sufficiently large. The long-term dynamics of the bed forms is investigated with a set of coupled nonlinear amplitude equations. It appears that the model can have multiple equilibria and finite-amplitude periodic solutions. The latter have characteristics similar to observed migrating bed forms in tidal inlets.
| Original language | English |
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| Pages | 28-33 |
| Number of pages | 6 |
| Publication status | Published - 1997 |
| Event | Proceedings of the 1997 27th Congress of the International Association of Hydraulic Research, IAHR. Part C - San Francisco, CA, USA Duration: 10 Aug 1997 → 15 Aug 1997 |
Conference
| Conference | Proceedings of the 1997 27th Congress of the International Association of Hydraulic Research, IAHR. Part C |
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| City | San Francisco, CA, USA |
| Period | 10/08/97 → 15/08/97 |