Tsunami occurring prior to the historical record or for which there are no written observations. Paleotsunami research is based primarily on the identification, mapping, and dating of tsunami deposits [..]

A loss of sand from the active beach which is calculated based on volume

A decrease in the useable beach width caused by erosion

A strip of land of indefinite width (may be several kilometers) that extends from the shoreline inland to the first major change in terrain features. The part of a country regarded as near the coast.

General term used to encompass both coast protection against erosion and sea defense against flooding.

The wearing away of coastal lands, usually by wave attack, tidal or littoral currents, or wind. Coastal erosion is synonymous with shoreline (vegetation line) retreat.

The transition zone where the land meets water; the region that is directly influenced by marine hydrodynamic processes. Extends offshore to the continental shelf break and onshore to the first major [..]

The line that forms the boundary between the coast and the shore. Commonly referred to as the line that forms the boundary between the land and the water (especially the water of a sea or ocean, also [..]

A coral-algal mound or ridge of in-place coral colonies and skeletal fragments, carbonate sand, and organically-secreted calcium carbonate. A coral reef is built up around a wave-resistant framework, [..]

Time between the maximum level arrival time and the arrival time of the first wave.