- Отрасли: 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 ...
In hydrographic usage, a navigable channel through a bar, reef, or shoal, or between closely adjacent islands. On the Gulf of Mexico coast, inlets are often known as passes (e.g., Sabine Pass).
Industry:Engineering
Containing calcium carbonate (CaCO3), chiefly as the minerals calcite and aragonite. When applied to rock, it implies that as much as 50 percent of the rock is carbonate (e.g., calcareous sand).
Industry:Engineering
(1) A cylindrical sample extracted from a beach or seabed to investigate the types and depths of sediment layers. _x000D_
(2) An inner, often much less permeable portion of a breakwater or barrier beach
Industry:Engineering
The type of tidal current having only one flood and one ebb period in the tidal day. A rotary current is diurnal if it changes its direction through all points of the compass once each tidal day.
Industry:Engineering
(1) The total amount of water that flows into a harbor or out again with movement of the tide, excluding any fresh water flow. (2) The volume of water present between mean low and mean high tide.
Industry:Engineering
(1) The vertical rise or fall of the waves or the sea. (2) The translational movement of a craft parallel to its vertical axis. (3) The net transport of a floating body resulting from wave action.
Industry:Engineering
The seaward return of the water following the uprush of the waves. For any given tide stage the point of farthest return seaward of the backrush is known as the Limit of backrush or limit backwash.
Industry:Engineering
Sediment grains under high sheer stress moving as a layer that extends from the bed surface to some distance below (on the order of a few cm). Grains are transported in the direction of fluid flow.
Industry:Engineering
The narrow zone seaward from the low tide shoreline, covered by water, over which the beach sands and gravels actively oscillate with changing wave conditions.
Industry:Engineering
Wind-generated waves that have traveled out of their generating area. Swell characteristically exhibits a more regular and longer period and has flatter crests than waves within their fetch (seas).
Industry:Engineering
