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spring tide

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beneaped

Overview page. Subjects: Maritime History.

The situation of a vessel which has gone aground at the top of the spring tides and has to wait for up to a fortnight (during which the neap tides occur) for the next tide high enough to...

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bore

Overview page. Subjects: Meteorology and Climatology.

A positive surge that may form at flood tide in shallow estuaries with a large tidal range (Wolanski et al. (2004) Estuarine, Coast. & Shelf Sci. 60, 4).

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neap tide

Overview page. Subjects: Science and Mathematics.

A tide just after the first or third quarters of the moon when there is least difference between high and low water. Recorded from late Middle English, neap was originally an adjective,...

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seaweed

Overview page. Subjects: Maritime History.

Marine algae of interest as food include Irish moss, laver bread, and kelp, which are eaten to some extent in different communities and serve as a mineral supplement in animal feed.

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storm surge

Overview page. Subjects: Meteorology and Climatology.

Rise or piling-up of water during a storm, as a result of wind stresses acting on the surface of the sea and of atmospheric-pressure differences. If a storm surge occurs at the time of...

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subtidal

Overview page. Subjects: Ecology and Conservation — Earth Sciences and Geography.

Applied to that portion of a tidal-flat environment which lies below the level of mean low water for spring tides. Normally it is covered by water at all states of the tide. The word is...

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supratidal

Overview page. Subjects: Ecology and Conservation — Earth Sciences and Geography.

Applied to that portion of a tidal flat which lies above the level of mean high water for spring tides. It is inundated only occasionally by exceptional tides or by tides augmented by a...

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tidal bundle

Overview page. Subjects: Earth Sciences and Geography.

Cross-stratification that comprises the set of sand units and mud drapes deposited during the lunar cycle of the tides. During spring tides the more vigorous water movement results in thick...

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tidal cycle

Overview page. Subjects: Environmental Science.

The 14 day period from one spring tide to the next spring tide, or from one neap tide to the next neap tide. Also known as the tidal period.

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tidal range

Overview page. Subjects: Biological Sciences.

The difference in height between consecutive high and low waters. The tidal range varies from a maximum during spring tides to a minimum during neap tides. In tide tables daily high- and...

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