The emersion curve in semidiurnal tidal regimes |
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| Authors: | RG Hartnoll SJ Hawkins |
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| Institution: | 1. Department of Marine Biology, University of Liverpool, Port Erin, Isle of Man, U.K.;2. Department of Zoology, University of Manchester, Oxford Road, Manchester M13 9PL, U.K. |
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| Abstract: | Emersion curves are presented for eight locations in Britain experiencing semidiurnal tides. Curves were produced by computer analysis of reduced hourly tide gauge observations over a 1-year period, and were not based upon predicted times of HW and LW as mostly used hitherto. The locations differ in tidal constants and the form of the tide curve. The shape of the emersion curve varies markedly between locations, and for each curve the slope, which indicates the rate of change of environmental conditions, is analysed with respect to height at the tide gauge. “Critical tide levels”, where conditions change particularly rapidly, are obvious on some curves but less evident on others. |
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| Keywords: | semidiurnal tide intertidal environment tide records British Isles |
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