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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 
base line reduction to the spheroid
Earth science; Mapping science
Base-line reduction to the ellipsoid when the ellipsoid is a spheroid (ellipsoid of rotation).
admiralty chart
Earth science; Mapping science
A hydrographic chart of the British Admiralty. Sometimes written, incorrectly, admiralty chart.
topocentric angle
Earth science; Mapping science
A plane angle with vertex at the surface of the Earth (or, more usually, at a point on an ellipsoid representing the surface of the Earth).
beam width
Earth science; Mapping science
The angle between half power intensities in the lobes of an antenna pattern.
arc length
Earth science; Mapping science
Measured along a curved line. The line could be circular, parabolic, hyperbolic, spiral, a catenary, etc.
base unit
Earth science; Mapping science
One of the units of length (or the speed of light in vacuo), mass, time, temperature, amount of substance, electrical current and luminous intensity.
alinement correction
Earth science; Mapping science
A correction applied to the measured length of a line to allow for the tape's not being held exactly in a vertical plane containing the line. Although the two vertical planes ...
Sub-categories
- Geology (10953)
- Mapping science (105290)
- Oceanography (12332)
- Physical oceanography (42660)
- Remote sensing (8661)
- Seismology (14406)
- Soil science (29216)