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Eng ID Term Definition
5301
synoptic forecast
WEATHER FORECAST based on SYNOPTIC OBSERVATION.
5302
synoptic hour
Hour, expressed in terms of UT, at which, by international agreement, METEOROLOGICAL OBSERVATIONS are made simultaneously throughout the glo... more
Hour, expressed in terms of UT, at which, by international agreement, METEOROLOGICAL OBSERVATIONS are made simultaneously throughout the globe.
5303
synoptic meteorology
Branch of METEOROLOGY which is concerned with the study of METEOROLOGICAL ELEMENTS in space. It is based on the analysis of the SYNOPTIC CHA... more
Branch of METEOROLOGY which is concerned with the study of METEOROLOGICAL ELEMENTS in space. It is based on the analysis of the SYNOPTIC CHARTS on which are plotted SYNOPTIC OBSERVATIONS for the purpose of the WEATHER ANALYSIS or WEATHER FORECAST.
5304
synoptic observation
METEOROLOGICAL OBSERVATION made at the same time (SYNOPTIC HOUR) at numerous stations to obtain general representation of the state of the a... more
METEOROLOGICAL OBSERVATION made at the same time (SYNOPTIC HOUR) at numerous stations to obtain general representation of the state of the atmosphere at the given time.
5305
synthetic aperture radar (SAR)
A RADAR with a synthe­tic aperture antenna which is composed of a large number of elementary transducing elements. The signals are electron... more
A RADAR with a synthe­tic aperture antenna which is composed of a large number of elementary transducing elements. The signals are electronically combined into a resulting signal equivalent to that of a single antenna of a given aperture in a given direction.
5306
syntony
The situation of two or more oscillating circuits having the same RESONANT FREQUENCY.
5307
systematic error
See ERROR.
5308
system development
The development of a program system comprising analysis, design, programming, testing, and implementation.
5309
systems of sounding lines
The predetermined lines that the SURVEY platform is to follow for the best development of the DEPTH CONTOURS in an area.
5310
Système International (SI System)
System of metric measures consi­sting of seven basic units which are METRE, KILOGRAMME, SECOND, AMPERE, Kelvin, MOLE and CANDELA.
5311
syzygy
In ASTRONOMY, either of two opposing points in the ORBIT of a PLANET or SATEL­LITE, especially of the MOON, at which it is in CONJUNCTION w... more
In ASTRONOMY, either of two opposing points in the ORBIT of a PLANET or SATEL­LITE, especially of the MOON, at which it is in CONJUNCTION with or in OPPOSI­TION to the SUN.
5312
syzygy tide
See TIDE.
5313
table
An orderly, condensed arrangement of numerical or other informa­tion, usually in parallel vertical columns. See CONVERSION TABLE, CURRENT T... more
An orderly, condensed arrangement of numerical or other informa­tion, usually in parallel vertical columns. See CONVERSION TABLE, CURRENT TABLES, TIDE TABLES, TRAVERSE TABLE.
5314
tableland
An elevated region of LAND with a generally level surface of large or considerable extent; a lofty PLAIN; a PLATEAU.
5315
tablemount
A SEAMOUNT having a comparatively smooth flat top. Also called guyot.
5316
tabular berg
A flat-topped ICEBERG. Most tabular bergs form by breaking from an ICE SHELF and show horizontal banding.
5317
tabulation
Orderly arrange­ment as in a TABLE.
5318
tachometer
A device that indicates or measures the revolutions per MINUTE of a revolving shaft or the VELOCITY of a machine.
5319
tachymeter (or tacheometer)
A surveying instrument designed for use in the rapid determination of di­stance, DIRECTION, and difference of ELEVATION from a single OBSER... more
A surveying instrument designed for use in the rapid determination of di­stance, DIRECTION, and difference of ELEVATION from a single OBSERVATION, using a short base which may be an integral part of the instrument.
5320
tachymetry
A method of SURVEYING for the rapid deter­mination of distance, DIRECTION, and relative ELEVATI­ON of a point with respect to the instrume... more
A method of SURVEYING for the rapid deter­mination of distance, DIRECTION, and relative ELEVATI­ON of a point with respect to the instrument station by a single OBSERVA­TION on a rod or other object at the point. The stadia method of SURVEYING is an exam­ple of tachymetry.