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	Eng ID	Term	Definition
	5521	tide gauge	See GAUGE.
	5522	tide-generating force	See TIDE-PRODUCING FORCE.
	5523	tideland	LAND which is under water at HIGH TIDE and uncovered at LOW TIDE.
	5524	tide lock	A LOCK situated between a BASIN or CANAL and TIDEWATER to maintain the water at a desired level as the HEIGHT of the TIDE changes. Also call... more A LOCK situated between a BASIN or CANAL and TIDEWATER to maintain the water at a desired level as the HEIGHT of the TIDE changes. Also calledguard lock.
	5525	tidemark	A HIGH WATER MARK left by TIDAL WATER. The highest point reached by a HIGH TIDE. A MARK placed to indicate the highest point reached by a HI... more A HIGH WATER MARK left by TIDAL WATER. The highest point reached by a HIGH TIDE. A MARK placed to indicate the highest point reached by a HIGH TIDE, or, occasionally, any specified state of TIDE.
	5526	tide pole	See TIDE STAFF.
	5527	tide-predicting machine	An instrument that computes, sometimes for years in advance, the TIMES and HEIGHTS of HIGH and LOW WATERS at a REFERENCE STATION by mechan... more An instrument that computes, sometimes for years in advance, the TIMES and HEIGHTS of HIGH and LOW WATERS at a REFERENCE STATION by mechanically summing the HARMONIC CONSTITUENTS of which the TIDE is composed.
	5528	tide (or tidal) prediction	The mathematical process by which the TIMES and HEIGHTS of the TIDE are determined in advance from the HARMONIC CONSTITUENTS at a place. See... more The mathematical process by which the TIMES and HEIGHTS of the TIDE are determined in advance from the HARMONIC CONSTITUENTS at a place. See HARMONIC ANALYSIS OF TIDE.
	5529	tide-producing force(s)	That part of the gravitational attraction of a CELESTIAL BODY which is effective in producing the TIDES on EARTH. The SUN and MOON are the... more That part of the gravitational attraction of a CELESTIAL BODY which is effective in producing the TIDES on EARTH. The SUN and MOON are the principal astronomic bodies that have a tide-producing effect. The force varies approximately as the mass of the attracting body and inversely as the cube of its distance. Also called tide-generating force.
	5530	tide race	A strong TIDAL CURRENT or a CHANNEL in which such a CURRENT flows.
	5531	tide range	See RANGE OF TIDE.
	5532	tide reducer	The CORRECTION that must be applied to a recorded SOUNDING for the HEIGHT OF TIDE above or below the DATUM of reference at the TIME of SOUND... more The CORRECTION that must be applied to a recorded SOUNDING for the HEIGHT OF TIDE above or below the DATUM of reference at the TIME of SOUNDING.
	5533	tide register	See GAUGE: TIDE.
	5534	tide rip(s)	Small WAVES formed on the surface of water by the meeting of opposing TIDAL CURRENTS or by a TIDAL CURRENT crossing an irregular BOTTOM. Ver... more Small WAVES formed on the surface of water by the meeting of opposing TIDAL CURRENTS or by a TIDAL CURRENT crossing an irregular BOTTOM. Vertical oscillation, rather than PROGRESSIVE WAVES, is characteristic of tide rips.
	5535	tide signal	See SIGNAL.
	5536	tide staff	A TIDE GAUGE consisting of a vertical graduated pole from which the HEIGHT OF TIDE at any TIME can be read directly. Also called tide pole.
	5537	tide staff: multiple	A succession of TIDE STAFFS on a sloping SHORE, so placed that the vertical GRADUATIONS on the several staffs form a continuous scale with r... more A succession of TIDE STAFFS on a sloping SHORE, so placed that the vertical GRADUATIONS on the several staffs form a continuous scale with reference to the same DATUM.
	5538	tide station	See STATION.
	5539	tide tables	TABLES listing daily predictions, usually a year in advance, of the TIMES and HEIGHTS of the TIDE. These predictions are usually supplemente... more TABLES listing daily predictions, usually a year in advance, of the TIMES and HEIGHTS of the TIDE. These predictions are usually supplemented by TIDAL DIFFERENCES and TIDAL CONSTANTS by means of which additional predictions can be obtained for numerous other places. See TIDE PREDICTION.
	5540	tidewater	Water affected by TIDES or sometimes that part of it which covers the TIDELAND. The term is sometimes used broadly to designate the SEABOARD... more Water affected by TIDES or sometimes that part of it which covers the TIDELAND. The term is sometimes used broadly to designate the SEABOARD. See TIDAL WAVES.
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