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A subharmonic lunar tide in the seas off Western Europe

Nature volume 257, pages 277280 (25 September 1975) | Download Citation

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Abstract

A small and often neglected tidal component, which is an exact subharmonic of the M2 tide, is shown to have unusually large amplitudes over a sea area stretching from Shetland to the Azores, including the North Sea. An explanation is offered in terms of normal oceanic modes recently computed by Platzman, and implications for tidal prediction procedures are discussed.

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Affiliations

  1. Institute of Oceanographic Sciences, Bidston Observatory, Birkenhead, UK

    • D. E. Cartwright

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DOI

https://doi.org/10.1038/257277a0

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