Articles | Volume 13, issue 4
Ocean Sci., 13, 599–607, 2017
https://doi.org/10.5194/os-13-599-2017
Ocean Sci., 13, 599–607, 2017
https://doi.org/10.5194/os-13-599-2017

Research article 20 Jul 2017

Research article | 20 Jul 2017

The double high tide at Port Ellen: Doodson's criterion revisited

Hannah A. M. Byrne et al.

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Latest update: 16 May 2021
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Short summary
Some places experience double high tides, where the tide starts to ebb for a short while, only to briefly flood again before finally receding. The result is a very long high tide with weak currents, and is important for navigational purposes. The existing theory for when and where double high tides occur does not always capture them, and it can only be applied to double highs occurring on a twice-daily tide. Here, the criterion has been generalized to capture all double high or low tides.