Chapter 3

Tidal Energy

Abstract

Tidal energy is presently one of the more favoured forms of marine renewable energy because, due to its origins in (astronomical) tide generating forces, it is predictable. This is in contrast to other more stochastic renewable energy sources such as wind and wave and, in part, solar. However, regardless of its predictability, tidal energy shares a key feature with the majority of renewable energy sources—it is intermittent, from diurnal (once per day) and semidiurnal (twice daily), to fortnightly (spring-neap) timescales. In this chapter, we explain the origin of the tides, and how tides evolve as they propagate over shelf sea regions. It covers methods of analysing and predicting the tides, and how tides can ...

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