SET-UP, WIND - (l) The vertical rise in the still yater level on the 

 leeward side of a body of v/ater caused by wind stresses on the 

 surface of the watery (2) The difference in still water level between 

 the windward and the leeward sisJes of a body of water caused by wind 

 stresses on the surface of the water; (3) Synonyi-aous with WIND TIDE, 

 WIND TIDE is usually reserved for use on the ocean and large bodies 

 of water, WII© SET-UP is iisually reserved for use on reservoirs and 

 saiTill bodies of water. (See Figure A-]i). 



SiiALLOW WATER - (l) Cominonly; x;ater of such a depth that surface waves 

 are noticeably affected by bottom topography* It is customary to 

 consider water of depths less than half the surface wave length 

 as shallow water. See TRANSITIONAL IjATER; (2) More strictly; in 

 hydrodynamics s with regard to progressive gravity waves, water in 

 which the depth is less than l/25th the wave length, illso called 

 ¥ERY SHA1,L0W WATER., 



SHEET FILE - See under PILE« 



SHELF^ CONTINENTAL - The zone bordering a continent extending from the 



line of permanent imiaersion to the depth (usually about 100 fathoms) 

 where there is a marked or rather steep descent toward the great 

 depths , 



SHELF, INSUIPiR ~ The zone surrounding an island extending from the line 

 of permanent imiTiersion to the depth (usually about 100 fathoms) 

 where there is a marked or rather steep descent toward the great 

 depths . 



SHINGLE - (l) Loosely and com;iionly; any beach material coarser than 

 ordinary gravel, especially any having flat or flattish pebbles; 

 (2) Strictly and accurately; beach material of smooth, well-rounded 

 pebbles that are roughly the ssjae size. The spaces between pebbles 

 are not filled with finer materials* Shingle gives out a musical 

 note when stepped on, ^ 



SHOAL (noun) ~ A detached elevation of the sea bottom comprised of any 

 material except rock or coral, and which may endanger surface 

 navigation. 



SHOAL (verb) - (l) to become shallow gradually; (2) to c ause to become 

 shallow; (3) to procee d from a greater to a lesser depth of water, 



SHOALING GOEFFIGIEUT - The ratio of the height of a wave in water of any 

 depth to its height in deep water with the effect of refraction 

 eliminated. Sometimes SHOALING FACTOR or DEPTH FACTOR, See also 

 ENERGY COEFFICIENT and REFRACTION GOEFFICIENT, 



SHORE - The strip of ground bordering any body of water which is 



ordinarily exposed, or covered by tides and/or x-faves, A shore of un- 

 consolidated material is usually called a BEACH. (See Figure A-i) 



A-29 



