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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 
apothem
Earth science; Mapping science
The perpendicular from the center of a regular polygon to one of the sides. Also spelled apothegm.
45o astrolabe
Earth science; Mapping science
A prismatic astrolabe in which the prism directs the line of sight at a 45° angle to the horizontal.
beach ridge
Earth science; Mapping science
A continuous mound of material, behind the beach, which has been heaped up by the action of waves carrying the material of the beach farther inland.
geodetic adjustment
Earth science; Mapping science
The adjustment of the values of geodetic constants, particularly those (length, angle, direction, coordinates) that characterize a geodetic network.
secondary azimuth
Earth science; Mapping science
An astronomic azimuth taken as the astronomic azimuth of a side in second order (secondary) or lower triangulation.
autocorrelation function
Earth science; Mapping science
The limit, as T approaches infinity, of (1/2T) times the integral of f(t) f(t - τ)dt from T to +T; τ is a parameter.
Sub-categories
- Geology (10953)
- Mapping science (105290)
- Oceanography (12332)
- Physical oceanography (42660)
- Remote sensing (8661)
- Seismology (14406)
- Soil science (29216)