- 行业: Earth science
- Number of terms: 93452
- Number of blossaries: 0
- Company Profile:
Founded in 1941, the American Congress on Surveying and Mapping (ACSM) is an international association representing the interests of professionals in surveying, mapping and communicating spatial data relating to the Earth's surface. Today, ACSM's members include more than 7,000 surveyors, ...
The initial direction of a great circle through two terrestrial points, expressed as angular distance from a reference direction. It is usually measured clockwise from the reference direction taken as 0°.
Industry:Earth science
An instrument for obtaining and recording temperature as a function of depth (strictly speaking pressure) in the ocean, from a ship under way.
Industry:Earth science
In general, any quantity whose values differ from those which are expected or which are predicted by simple theory. The following particular usages are common. <br>
Industry:Earth science
(1) The axis about which the Earth, or an figure representing the Earth, rotates. (2) The shortest diameter of an ellipsoid. (3) The shortest diameter of an ellipse. (4) That axis, in a polar or spherical coordinate system, which is the primary axis to which directions are referred (i.e., from which angles are measured.
Industry:Earth science
That astronomical almanac published jointly by the U. S. Naval Observatory and H. M. Nautical Almanac Office and containing only such data as are used in aerial navigation, such as Greenwich hour angle and declination of selected celestial bodies, times of sunrise, sunset, moonrise, and moonset.
Industry:Earth science
The part of astronomy which is concerned merely with describing the features (size, shape, mass, relief, etc. ) of celestial bodies like planets, without concern for the locations or physics of such bodies.
Industry:Earth science
(1) In general, that part of physics which concerns itself with sound - its causes, characteristics, and effects. In surveying, acoustics is involved primarily in the development and use of sub-marine surveying by sonar and analysis and use of natural and artificially-caused seismic events.
(2) In particular, that part of architecture which concerns itself with the design of buildings where the relation of the design to the quality or amount of sound in it is of first importance.
Industry:Earth science
