4 Terms
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Mapping science
The systemic study of the processes and designs involved with map making.
Industry: Earth science
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Mapping science
Delineation
Earth science; Mapping science
(1) The technique of selecting and outlining, on pictorial sources of information or on a map manuscript, those features worthy of being included on a map. (2) A preliminary step in compiling a ...
Rotary current
Earth science; Mapping science
A tidal current which flows continually, with the direction of flow changing through all points of the compass during the tidal period.
Delta
Earth science; Mapping science
A flat, fan-shaped region at the mouth of a river and composed of sediment deposited by the river.
Residual deviation
Earth science; Mapping science
The magnetic deviation of a compass after compensation or adjustment.
Decentration
Earth science; Mapping science
Failure of the optical centre of one element of an optical system to lie on the optical axis of a preceding or succeeding element. Decentration causes distortion, tan-gential distortion in ...
Reduced deflection of the vertical
Earth science; Mapping science
The angle ζ', at the point P' which is on the geoid and vertically below the point P on the Earth's surface, from the normal at the reference ellipsoid to the vertical through P'. Because P' is not ...
Declination arc
Earth science; Mapping science
(1) A graduated arc, on a surveyor's solar compass or on the solar attachment of an engineer's transit, on which the declination of the Sun (corrected for refraction) is set off. (2) A graduated ...
