Nortek User Story Featuring CZMU Wave Monitoring Programme

Diver tends ADCP current profiler mounted on sea floor

The oceanographic equipment company Nortek has featured the work done by the CZMU on its website as a user story. You can read the story via the link below:

Nortek CZMU User Story

Tags:

oceanography

wave

risk

monitoring

engineering

Glossary of Terms

Overwash

Transport of the sediment landward of the active beach by coastal flooding during a tsunami, hurricane, or other event with extreme waves.

The part of the uprush that runs over the crest of a berm of a structure and does not flow directly back to the ocean or lake.

The effects of waves overtopping a coastal defence, often carrying sediment landwards which is then lost to the beach system.

Seawall

A structure, often concrete or stone, built along a portion of a coast to prevent erosion and other damage by wave action. Often it retains earth against its shoreward face.

A structure separating land and water areas to alleviate the risk of flooding by the sea. Generally shore-parallel, although some reclamation seawalls may include lenghts that are nromal or oblique to the (original) shoreline.
A vertical or near-vertical type of shoreline armouring characterised by a smooth surface.

Contamination

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

Photic Zone

The zone extending downward from the ocean surface within which the light is sufficient to sustain photosynthesis. The depth of this layer varies with water clarity, time of year and cloud clover, but is about 100m in the open ocean.

It may be considered the depth to which all light is filtered out except for about one percent and may be calculated as about two and a half-times the depth of a secchi disk reading.

El Niño

Warm equatorial water which flows southward along the coast of Peru and Ecuador during February and March of certain years. It is caused by poleward motions of air and unusual water temperature patterns in the Pacific Ocean , which cause coastal downwelling, leading to the reversal in the normal north-flowing cold coastal currents. During many El Niño years, storms, rainfall, and other meteorological phenomena in the Western Hemisphere are measurably different than during non- El Niño years.

A warm current that usually appears around Christmas off the coast of Ecuador and Peru . It is often used to refer to episodic (3-5 year) events when the current is particularly intense and dominates the local population of organisms (the abundance of fish in particular). Such events lead to wider regional or global ocean-atmospheric perturbations whose manifestations range from increased sea surface temperatures in the tropical East Pacific to aberrant rainfall patterns. (see also ENSO ).

Rubble-mound Structure

A mound of random-shaped and random-placed stones protected with a cover layer of selected stones or specially shaped concrete armour units. (Armour units in a primary cover layer may be placed in an orderly manner or dumped at random.)

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Nortek User Story Featuring CZMU Wave Monitoring Programme