- 行业: Earth science
- Number of terms: 93452
- Number of blossaries: 0
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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, ...
A method of deriving the polar motion from a weighted set of observations from 34 instruments for latitude and 17 for time (longitude) at 29 observatories in existence in 1966. Corrections are applied each year so that the system does not change.
Industry:Earth science
(1) A point at the intersection of the side slope of a road with the natural surface of the ground. (2) A stake marking a point on the intersection of the side slope of a road with the natural surface of the ground.
Industry:Earth science
A portion of the public domain given to soldiers for military service by way of bounty, in place of monetary payment.
Industry:Earth science
In Spanish law, goods, property of every description, including real as well as personal property; all things (not being persons) which may serve for the uses of man.
Industry:Earth science
A horizontal control datum in South Africa defined by the following location and azimuth (clockwise from South) on the Clarke spheroid of 1880 (modified); the origin is at Buffelsfontein:<br>
Industry:Earth science
A camera designed for photographing stars. The term is used in geodesy to designate (a) a camera designed for photographing artificial satellites against a stellar background and (b) a cameras designed photograph the night sky from an aircraft or artificial satellite so that the craft's orientation can be determined. A camera designed for photographing the Sun is called a solar camera.
Industry:Earth science
A section of a globe with a radius of 1 meter, representing without distortion a part of the surface of the Earth. It was invented by the Dutch mathematician Adraien Veen and patented in 1594.
Industry:Earth science
(1) The act of ordering a yielding or giving up; surrender; relinquishment of property or rights. (2) In the Civil Law, an assignment; the act by which a party transfers property to another; the surrender of assignment of property for the benefit of ones creditors. (3) In public law, the assignment, transfer, or yielding up of territory by one state or government to another.
Industry:Earth science
(1) Originally, a number giving the amount of chlorine, Cl, in rams per kilogram, in a sample of sea water. (2) It was later defined to be the number Cl(o/oo) giving the mass, in grams, of atomic weight silver just necessary to precipitate the halogens in 0. 3285233 kg of a sample of sea water. (3) It is now related to salinity, S(o/oo) by the defining formula S(o/oo) ≡ 1. 80653 Cl(o/oo) in which the salinity is expressed in parts per thousand. In practice, chlorinity is seldom determined chemically (e.g., by titration against silver nitrate) but is determined by measuring the conductivity of sea water and calculating the chlorinity from this.
Industry:Earth science
(1) A boundary fixing one side of a piece of land. (2) A boundary, under Public Law 31, between adjacent States and extending from shore to their seaward boundaries. (3) A boundary between adjacent nations through the marginal sea and the contiguous zones.
Industry:Earth science
