- Sektör: Government
- Number of terms: 5261
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The United States Army Corps of Engineers is a federal agency with a mission to provide vital public engineering services in peace and war to strengthen the nation's security, energize the economy, and reduce risks from disasters. It is also a major U.S. Army organization employing some 38,000 ...
A coral reef parallel to and separated from the coast by a lagoon that is too deep for coral growth. Generally, barrier reefs follow the coasts for long distances and are cut through at irregular intervals by channels or passes. Example: Great Barrier Reef, Queensland, Australia.
Industry:Engineering
(1) A facing of stone, concrete, etc., to protect an embankment, or shore structure, against erosion by wave action or currents. (2) A retaining wall. (3) Facing of stone, concrete, etc., built to protect a scarp, embankment or shore structure against erosion by waves of currents.
Industry:Engineering
The average semidiurnal range occurring at the time of spring tides and most conveniently computed from the harmonic constants. It is larger than the mean range where the type of tide is either semidiurnal or mixed, and is of no practical significance where the type of tide is diurnal.
Industry:Engineering
A structure, usually of open construction, extending out into the water from the shore, to serve as a landing place, recreational facility, etc., rather than to afford coastal protection or affect the movement of water. In the Great Lakes, a term sometimes improperly applied to jetties.
Industry:Engineering
A hydraulic dredge that uses a rotating steel head consisting of hardened cutting blades and a backing ring to dislodge bottom material. The head is mounted at the suction entrance of the hydraulic pipeline, and fluidized material is picked up by suction and carried away through the pipe.
Industry:Engineering
In wave diffraction theory, the area outlined by drawing straight lines paralleling the direction of wave approach through the extremities of a protective structure. It differs from the actual protected area to the extent that the diffraction and refraction effects modify the wave pattern.
Industry:Engineering
The time of rotation of the Earth with respect to the moon, or the interval between two successive upper transits of the moon over the meridian of a place. The mean lunar day is approximately 24.84 solar hours in length, or 1.035 times as great as the mean solar day. Also called tidal day.
Industry:Engineering
The estimated minimum barometric pressure in the eye (approximate center) of a particular hurricane. The CPI is considered the most stable index to intensity of hurricane wind velocities in the periphery of the storm; the highest wind speeds are associated with storms having the lowest CPI.
Industry:Engineering
The average semidiurnal range occurring at the time of the perigean tides and most conveniently computed from the harmonic constants. It is larger than the mean range where the type of tide is either semidiurnal or mixed and is of no practical significance where the type of tide is diurnal.
Industry:Engineering
(1) Collective term for breakers. (2) The wave activity in the area between the shoreline and the outermost limit of breakers. (3) In literature, the term surf usually refers to the breaking waves on shore and on reefs when accompanied by a roaring noise caused by the larger waves breaking.
Industry:Engineering
