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Damaged Coral

Corals and Coral Reefs

Sargassum Seaweed

Glossary of Terms

Marker, survey

An object placed at the site of a station to identify the surveyed location of that station.

Swash Zone

The zone of wave action on the beach, which moves as water levels vary, extending from the limit of run-down to the limit of run-up.

Global Positioning System (GPS)

A navigational and positioning system developed by the U.S. Department of Defense, by which the location of a position on or above the Earth can be determined by a special receiver at that point interpreting signals received simultaneously from several of a constellation of special satellites.

Coastal Current

Those currents which flow roughly parallel to the shore and constitute a relatively uniform drift in the deeper water adjacent to the surf zone. These currents may be tidal currents, transient, wind-driven currents, or currents associated with the distribution of mass in local waters.

For navigational purposes, the term is used to designate a current in coastwise shipping lanes where the tidal current is frequently rotary.

Survey, topographic

A survey which has, for its major purpose, the determination of the configuration (relief) of the surface of the land and the location of natural and artificial objects thereon.

Polluter-pays Principle

The principle adopted by the OECD countries in 1972, requires that the polluter should bear the costs that pollution damage or pollution control impose upon society.

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