EM 1110-2-1100 (Change 1)
31 Jul 03
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.
Wave spectrum typical of fully-developed deep water waves.
The level at which the hydrostatic water pressure in an aquifer will stand if it is free to seek equilibrium with the
atmosphere. For artesian wells, this is above the ground surface.
A long, heavy timber or section of concrete or metal that is driven or jetted into the earth or seabed to serve as a
support or protection.
A group of piles.
Erosion of closed flow channels (tunnels) by the passage of water through soil; flow underneath structures, carrying
away particles, may endanger the stability of the structure.
Mineral deposits consisting of dense, resistant and often economically valuable minerals which have been
weathered from TERRIGENOUS rocks, transported to the sea and concentrated in marine sediments by wave or current
Surface mines in which valuable mineral grains are extracted from stream bar or beach deposits.
See COASTAL PLAIN.
The outline or shape of a body of water as determined by the still-water line.
A land area (usually extensive) having a relatively level surface raised sharply above adjacent land on at least one
side; table land. A similar undersea feature.
An epoch of the Quaternary Period characterized by several glacial ages.
(1) For a plunging wave, the point at which the wave curls over and falls. (2) The final breaking point of the waves
just before they rush up on the beach. (See Figure A-1)
A beach, usually small, in a coastal reentrant or between two littoral barriers (often rocky headlands).
Appendix A Glossary of Coastal Terminology