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

charge-coupled device

Earth science; Mapping science

An array of metal-oxide semiconductors or photodiode semiconductors in which the light falling on each semiconductor builds up a charge proportional to the integrated intensity of ...

gravimetric datum orientation

Earth science; Mapping science

Adjustment of the reference ellipsoid, for a particular geodetic datum, so that the differences between the geoidal heights determined from gravimetric and astrogeodetic surveys ...

diagonal check

Earth science; Mapping science

Measurements made across opposite corners of the outside lines of a graticule to check the accuracy of the graticule or to check the scale of the graticule. A diagonal check has ...

acoustic current meter

Earth science; Mapping science

An instrument which measures rate of flow in rivers and oceans by transmitting acoustic pulses in opposite directions parallel to the flow and measuring the difference in the time ...