GIS Dictionary

[surveying] A plane of reference for depths, depth contours, and elevations of foreshore and offshore features.

[geodesy] A survey of a water body, particularly of its currents, depth, submarine relief, and adjacent land.

[geodesy] The measurement and description of water features and their related land areas for the purposes of safe marine navigation.

[geography] The circulation of water from the earth through the atmosphere and back again. Its major stages are evaporation, condensation,

The study of water, its behavior, and its movements across and below the surface of the earth, and through the

A reference (link) from one point in an electronic document to another document or another location in the same document

[cartography] The study and representation of elevation and the earth’s topography.

[cartography] A curve showing the relationship of area to elevation for specified terrain. A hypsometric curve is plotted on a

[cartography] A map showing relief, whether by contours, hachures, shading, or tinting.

[map design] Relief or depth depicted by a gradation of colors, usually between contour lines. Each color represents a different

1 [geodesy] The science that determines the spatial distribution of elevations above an established datum, usually sea level. 2 [geodesy]