EM 1110-2-1100 (Change 1)
31 Jul 03
CUSPATE BAR
A crescent-shaped bar uniting with the shore at each end. It may be formed by a single spit growing from shore and
then turning back to again meet the shore, or by two spits growing from the shore and uniting to form a bar of sharply cuspate
form.
CUSPATE SPIT
The spit that forms in the lee of a shoal or offshore feature (BREAKWATER, island, rock outcrop) by waves that
are refracted and/or diffracted around the offshore feature. It may eventually grow into a TOMBOLO linking the feature to
the mainland.
CUTTERHEAD DREDGE
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.
CYCLOIDAL WAVE
A steep, symmetrical wave whose crest forms an angle of 120 degrees and whose form is that of a cycloid. A
trochoidal wave of maximum steepness. See also TROCHOIDAL WAVE.
CYCLONE
A system of winds that rotates about a center of low atmospheric pressure. Rotation is clockwise in the Southern
Hemisphere and anti-clockwise in the Northern Hemisphere. In the Indian Ocean, the term refers to the powerful storms
called HURRICANES in the Atlantic.
A-20
Appendix A Glossary of Coastal Terminology
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