power scheme involving a barrage across the head of a bay or involving a lagoon enclosing a coastal area. The reasons for this include the following: (1) as noted above, even a current of 3 m/s is equivalent to a head of only 0.5 m, much less than would be available with a barrage or lagoon; (2) the construction of a lagoon should be much simpler than the installation of a large number of in-stream turbines in a region of strong currents; and (3) the overall environmental impact of a lagoon might be less than that of an array of turbines producing the same average power.
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"2 Tidal Resource Assessment."
An Evaluation of the U.S. Department of Energy's Marine and Hydrokinetic Resource Assessments.
Washington, DC: The National Academies Press, 2013.
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