We saw significant differences in profile response between D1 and DD1. D1 and DD1 were essentially the same experiment (2.5m lagoon, tide between 1.75 and 3.25m), 0.8m waves, 4.5s period. The only difference between them was the rate at which the tide flooded and ebbed, being a 75 minute flood and ebb on D1 and a 90 minute flood and ebb on DD1.
As you can see, the profile responses were quite different. The profile of DD1 at the beginning was very much the same as at the end (see the next post for the differences over the tidal run) - apart from some crestal accretion, the two profiles were virtually identical. However, the profile at the end of D1 was very different to the beginning, with offshore sediment transport in the region of wave breaking and profile accretion/flattening offshore. The tide pushed up a similar lens of sediment at the crest
Sensitive to the initial profile, or the shape of the tidal curve? It is likely that the initial profile DD1 had equilibriated to the wave/tide conditions, which explains the lack of subsequent net change
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