20 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
Topocentric equatorial coordinate system
Earth science; Mapping science
A coordinate system with its origin the observer's location on the spheroid representing the Earth, and with its other defining axes and planes parallel to those of an equatorial coordinate system ...
Cross-hatching
Earth science; Mapping science
A combination of two sets of closely spaced, parallel lines, the one set crossing the other at a predetermined angle. It is used on charts and maps to designate or distinguish particular kinds of ...
Reversing current
Earth science; Mapping science
A tidal current which flows alternately in approximately opposite directions, with slack water at each reversal. Such currents occur principally in regions where flow is largely restricted to ...
Control densification
Earth science; Mapping science
The addition of control throughout a region in which control has already been established. Unless otherwise specified, geodetic control may be assumed to be meant.
Coplanarity condition
Earth science; Mapping science
The condition placed, in photogrammetry, on three lines the line joining the perspective centres at the times of exposure of two photographs, and the two lines joining the point in object space to ...
Detail point
Earth science; Mapping science
(1) A ground control point established by a subsidiary survey (not a survey for establishing geodetic control), placed at or near an important cultural feature or other feature to be included in the ...
Spheroidal coordinate system
Earth science; Mapping science
A coordinate system defined by three families of surfaces, as follows: (a) longitude is defined by a family of numbered planes intersecting in a common line (the polar axis); (b) latitude is defined ...
