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Glossary of Terms

Tiny drainage channels in a beach caused by the flow seaward of water left in the sands of the upper part of the beach after the retreat of the tide or after the dying down of storm waves.

Hurricane

An intense tropical cyclone in which winds tend to spiral inward toward a core of low pressure, with maximum surface wind velocities that equal or exceed 33.5 m/sec (75 mph or 65 knots) for several minutes or longer at some points.

Tropical storm is the term applied if maximum winds are less than 33.5 m/sec but greater than a whole gale (63 mph or 55 knots). Term is used in the Atlantic , Gulf of Mexico , and eastern Pacific.

Hydrography

The description and study of seas, lakes, rivers and other waters; the science of locating aids and dangers to navigation; the description of physical properties of the waters of a region.

Littoral

Of or pertaining to a shore, especially of the sea. Often used as a general term for the coastal zone influenced by wave action, or, more specifically, the shore zone between the high and low water marks.

Uprush

The rush of water up the foreshore following the breaking of a wave, also called swash or run up.

Macro-tidal

Tidal range greater than 4 m.

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