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Glossary

Glossary of Terms

Salinity

The number of grams of salt per thousand grams of sea water, usually expressed in parts per thousand.

Station, control

A point on the ground whose horizontal or vertical location is used as a basis for obtaining locations of other points.

Groyne Field

A series of groynes acting together to protect a section of beach. Also called a groyne system.

Intertidal zone (often called littoral zone)

The part of the shoreline that is submerged at high tide and exposed at low tide.

Marker, reference

A mark of permanent character close to a survey station, to which it is related by an accurately measured distance and azimuth (or bearing).

Bench Mark

A permanently fixed point of known elevation. A primary bench mark is one close to a tide station to which the tide staff and tidal datum originally are referenced.

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