Geographical Information System (GIS)

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

Glossary of Terms

Collective term covering the action of natural forces on the shoreline, and near shore seabed.

Mud

A fluid-to-plastic mixture of finely divided particles of solid material and water.

The movement of beach material in the littoral zone by waves and currents. Includes movement parallel (longshore drift) and sometimes perpendicular (cross-shore transport) to the shore; Also referred to as littoral drift.

Washover

Sediment deposited inland of a beach by over wash processes. Water depth - distance between the seabed and the still water level.

Mean Sea Level (MSL)

The average height of the surface of the sea for all stages of the tide over a 19-year period, usually determined from hourly height readings. Not necessarily equal to mean tide level. It is also the average water level that would exist in the absence of tides.

Photomosaic

An assemblage of photographs, each of which shows part of a region, put together in such a way that each point in the region appears once and only once in the assemblage, and scale variation is minimised.

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Geographical Information System (GIS)