Storm Surge

A temporary rise in sea level associated with a storm's low barometric pressure and onshore winds.

Glossary of Terms

Database of information which is geographically referenced, usually with an associated visualization system.

An arbitrary division of a continuous scale of grain sizes such that each scale unit or grade may serve as a convenient class interval for conducting the analysis or for expressing the results of an analysis.

Mean Tide Level

A plane midway between mean high water and mean low water. Not necessarily equal to mean sea level. Also referred to as half-tide level.

Oversplash

The water that splashes over the top of a breakwater, seawall or other coastal defence structure.

Overtopping

Passing of water over the top of a structure as a result of wave run-up or surge action.

Coastal Strip

A zone directly adjacent to the waterline, where only coast related activities take place. Usually this is a strip of some 100 m wide. In this strip, coastal defense activities take place. In this strip often there may be restrictions to land use.

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Storm Surge