Crest of Wave

The highest part of a wave.

Glossary of Terms

A required open space, specified in shoreline master programmes, measured horizontally upland from a perpendicular to the ordinary high water mark.

Pollution (marine)

The introduction by man, directly or indirectly, of substances or energy into the marine environment (including estuaries) resulting in such deleterious effects as harm to living resources, hazards to human health, hindrance to maritime activities including fishing, impairment of quality for use of sea water and reduction of amenities.

The contamination of the environment or poisonous substances.

Survey, photogrammetric

A survey in which monuments are placed at points that have been determined photogrammetrically.

Submarine Groundwater

Underground fresh water that has flowed beneath the sea floor.

Erosion

The loss of sediment, sometimes indicated by the landward retreat of a shoreline indicator such as the water line, the berm crest, or the vegetation line.

Contamination

An anthropogenic increase in the concentration of a substance in the marine environment.

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Crest of Wave