![]() ![]() Tidal energy is a clean and predictable, although intermittent source of power. We also briefly examine the Swansea Lagoon scheme and find that this is too small to have a significant impact on the resonant response of the channel. However, the barrage causes very little change to the resonant response for longer periods including for the semi-diurnal periods which dominate the tides in the region. We find that the barrage can alter the response of the Bristol Channel to excitation with higher frequencies than 12 h. In this paper, we examine the resonant response of the Bristol Channel system, with and without a barrage structure deployed, using a depth-averaged numerical model. Thus, it is important to understand the impact of a barrage on the resonance of the system which in turn leads to an understanding of the environmental impact of building a barrage. However, the large tidal range is partially driven by tidal resonance and such systems can be sensitive to small changes. Numerous proposals have been made to exploit this for energy extraction. ![]() The Bristol Channel/Severn Estuary has some of the largest tides in the world with a mean spring tidal range of 12.2 m. ![]()
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