Mapping science

Mapping science

The systemic study of the processes and designs involved with map making.

Industry: Earth science

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Mapping science

Tidal bench mark

Earth science; Mapping science

A bench mark the elevation of which with respect to mean sea level at a nearby tidal gauge has been determined and which is used as reference for that tidal gauge and for tidal datums. National ...

Panoramic camera

Earth science; Mapping science

A camera which takes a partial or complete panoramic photograph of the terrain. Some designs contain a lens system and slot like aperture which rotate about an axis perpendicular to the optical ...

Replacement of one device or instrument by another in such a way that if the original object was vertically over a mark, then so is the replacement. Some mountings are designed to hold a number of ...

Checkerboard method

Earth science; Mapping science

A method of determining details of the terrain, in a small topographic survey, by covering the region with a rectangular grid marked by stakes at 15, 20 or 30 metre intervals, determining the ...

Centre of section

Earth science; Mapping science

The point formed by lines connecting opposite corners of quarter sections in a section of land. It is also called the centre quarter corner.

Brightness scale

Earth science; Mapping science

The ratio of the brightness of highlights to the deepest shadow in the actual terrain, as measured from the camera stations, for field of view under consideration.

Colour equation

Earth science; Mapping science

The equation Cl = r R + g G + b B , which characterises a colour Cl of luminosity l by matching it against a mixture of r units of colour R (red), g units of colour G (green) and b units of ...