WAVE DIRECTION - The direction from which a wave approaches. 



WAVE FORECASTING - The theoretical determination of future wave char- 

 acteristics, usually from observed or predicted meteorological 

 phenomena. 



WAVE GENERATION - See GENERATION OF WAVES. 



WAVE, GRAVITY - See GRAVITY WAVE. 



WAVE GROUP - A series of waves in which the wave direction, wave- 

 length, and wave height vary only slightly. See also GROUP 

 VELOCITY. 



WAVE HEIGHT - The vertical distance between a crest and the preceding 

 trough. See also SIGNIFICANT WAVE HEIGHT. (See Figure A-3.) 



WAVE HEIGHT COEFFICIENT - The ratio of the wave height at a selected 

 point to the deepwater wave height. The refraction coefficient 

 multiplied by the shoaling factor. 



WAVE HINDCASTING - See HINDCASTING, WAVE. 



WAVE, IRROTATIONAL - See IRROTATIONAL WAVE. 



WAVELENGTH - The horizontal distance between similar points on two 

 successive waves measured perpendicular to the crest. (See 

 Figure A-3.) 



WAVE, MONOCHROMATIC - See MONOCHROMATIC WAVE. 



WAVE, OSCILLATORY - See OSCILLATORY WAVE. 



WAVE PERIOD - The time for a wave crest to traverse a distance equal 

 to one wavelength. The time for two successive wave crests to 

 pass a fixed point. See also SIGNIFICANT WAVE PERIOD. 



WAVE, PROGRESSIVE - See PROGRESSIVE WAVE. 



WAVE PROPAGATION - The transmission of waves through water. 



WAVE RAY - See ORTHOGONAL. 



WAVE, REFLECTED - That part of an incident wave that is returned sea- 

 ward when a wave impinges on a steep beach, barrier, or other re- 

 flecting surface. 



WAVE REFRACTION - See REFRACTION OF WATER WAVES. 



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