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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

skew angle

Earth science; Mapping science

(1) The acute angle between a line perpendicular to one center-line and to another center line. (2) The amount of angle by which that two intersecting lines deviate from a right ...

augmentation

Earth science; Mapping science

(1) The number of times the apparent topocentric, angular diameter of a celestial body is greater than the geocentric, angular diameter of that body. (2) The apparent increase ...

parallactic angle

Earth science; Mapping science

The angle, on the celestial sphere, between a great arc from a heavenly body to the pole and a great arc from the celestial body to the observer's zenith. It should not be ...

aiming circle

Earth science; Mapping science

A theodolite of low accuracy with limited amount of rotation vertically, a low power telescope, and containing a magnetic compass. Aiming circles used by the artillery have been ...

apo

Earth science; Mapping science

(prefix) Farthest from the attracting body. e.g. apogee, that point, in the elliptical orbit of a terrestrial satellite, at which the satellite is farthest from the Earth. But ...

normal-section azimuth

Earth science; Mapping science

The angle at a point A, on the ellipsoid, between the meridional plane through A and the normal section which passes through A and B.

Astro Gravimetric Method Of Determining The Geoid

Earth science; Mapping science

A method of determining geoidal heights from deflections of the vertical calculated from gravimetric data, or from a combination of gravimetric and astronomic data.