Glossary of Terms
The number of grams of salt per thousand grams of sea water, usually expressed in parts per thousand.
Change in salinity which can be expressed in parts per thousand per foot.
Sediment particles, often largely composed of quartz, with a diameter of between 0.062mm and 2mm, generally classified as fine, medium, coarse or very coarse. Beach sand may sometimes be composed of organic sediments such as calcareous reef debris or shell fragments.
An almost vertical slope along the beach caused by erosion by wave action. It may vary in height from a few cm to a metre or so, depending on wave action and the nature and composition of the beach.
- A steep slope, usually along the foreshore and/or at the vegetation line formed by wave attack.
The erosion of a dune or berm by wave attack during a storm or a large swell.
The removal of underwater material by waves and currents, especially at the base or toe of a shore structure.
Protection against erosion of the seabed in front of the toe.
A large body of salt water, second in rank to an ocean, more or less landlocked and generally part of, or connected with, an ocean or a larger sea. Examples: Mediterranean Sea; South China Sea.
- Waves caused by wind at the place and time of observation.
- State of the ocean surface, in regard to waves.
Large sand-filled geotextile tubes used in coastal protection projects.
Members of marine seed plants that grow chiefly on sand or sand-mud bottom. They are most abundant in water less than 9m deep. The common types are: Eel grass (Zostera), Turtle grass (Thallasia), and Mantee grass (Syringodium).