Earth science

Earth science

Any of several geological sciences that are concerned with the earth, its origins, and all of its various structures and physical forms and phenomena.

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Earth science > 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 gage has been determined and which is used as reference for that tidal gage and for tidal ...

cartography

Earth science; Mapping science

The art of expressing graphically, by maps, the known physical features of the Earth or of another celestial body. It usually includes showing the works of man and his varied ...

pseudo random code

Earth science; Mapping science

A code (1) based on a pseudo - random sequence of numbers, i.e., based on a sequence (usually periodic) of numbers generated according to definite mathematical rules but having ...

center of transit

Earth science; Mapping science

A manufacturer's term for the spindle or spindles which are upright when the transit is in use and about which the transit or a part of the transit rotates. The engineer's ...

extended Bouguer gravity reduction

Earth science; Mapping science

(1) The process of applying, to a measured or calculated value of gravity, the sum of a spherical Bouguer gravity correction and a topographic gravity correction. (2) The sum of ...

intercalary calendar

Earth science; Mapping science

A calendar in which days are inserted or removed from time to time to make the length of the calendar year agree better with the length of the tropical year. Tropical year and ...