- Industry: 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, ...
That instant at which a clock set to indicate daylight-saving time indicates that the time is 1200 (during daylight). It usually occurs one hour later than standard noon.
Industry:Earth science
The orthographic map projection of some surface other than the sphere or rotational ellipsoid in general.
Industry:Earth science
The exposed portion of a stratum of rock or of a vein at the surface of the Earth. In describing a survey station, the exposed part of a large boulder is sometimes mistaken for an outcrop.
Industry:Earth science
A bar defining the length of the French legal meter. It is an end-standard made of platinum and was used in determining a length for the International Prototype Meter. It is now preserved as a museum piece in the International Bureau of Weights and Measures at Sevres, France.
Industry:Earth science
Aerial photography in which one or more cameras are set deliberately with their optical axes at an angle to the vertical.
Industry:Earth science
A periodic perturbation of an orbit, having a period longer than that of the orbit.
Industry:Earth science
A factor, in the expression for a constituent tide or tidal current, involving the angle of inclination of the plane of the Moon's orbit to the plane of the Earth's equator.
Industry:Earth science
A mining claim embracing public lands that contain minerals occurring in a lode or vein.
Industry:Earth science
The magnitude, absolute or apparent, of an object determined from measurements made on a photograph of the object. Because photographic material is sensitive to different wavelengths than the human eye is, photographic magnitudes are different from visual magnitudes. The difference (the color index) between the two is a rough indication of the color of the object.
Industry:Earth science
(1) One complete set of measurements on a specific photograph. (2) The period of time, or the path traversed by a satellite in that period, during which a ground station received signals from the satellite. (3) One revolution of a satellite. This use of the term is inexplicable. (4) A narrow channel connecting two bodies of water. (5) The inlet through a barrie-reef atoll or sand bar. (6) A navigable channel at a river's mouth.
Industry:Earth science
