- 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, ...
An alphanumeric code indicating the location, in a computing machine, in which an instruction or an item of information is stored.
Industry:Earth science
Surficial features, particularly meander scrolls, built by accumulation of sediment.
Industry:Earth science
One of the star catalogs published as part of the international project for determining the photographic coordinates of all stars down to the 11 th magnitude and with an r. M. S. error of 0. 3".
Industry:Earth science
(1) Waste lands. (Spanish) (2) Unappropriated public domain, not set apart for municipalities. (Texas)
Industry:Earth science
The sum of the squares of the first differences in a sequence of variations in relative frequencies, divided by 2M, M being the number of first differences. The variation in frequency is usually the difference between the frequency being investigated and the standard frequency, divided by the nominal standard frequency and multiplied by 1012.
Industry:Earth science
The angular elevation of a celestial body near the celestial meridian but not on it. A correction is applied to an ex meridional altitude to obtain the meridional altitude.
Industry:Earth science
An annual publication containing, for each day or other suitable fraction of the year, information on the current locations of celestial bodies, together with the times and circum-stances of various astronomical events such as sunrise and sunset, eclipses, and transits of the planets particularly such information as is useful for navigation. Also referred to simply as an almanac. It is prepared and published several years in advance of the year to which it pertains. In 1980, the almanacs The American Ephemeris and Nautical Almanac, prepared by the U. S. Naval Observatory, and The Astronomical Ephemeris, prepared by H. M. Nautical Almanac Office, were renamed The Astronomical Almanac and published as a single almanac prepared jointly by the two organizations.
Industry:Earth science
(1) A complete summary of all information on public record relating to ownership (title) of a parcel of land.
(2) A summary of all conveyances, such as deeds or wills, and legal proceedings giving the names of the parties, the description of the land in question, and the agreements, arranged to show the continuity of ownership. An abstract of title customarily cites the surveys delimiting the parcel of land, refers to plats made from surveys, and lists legal instruments affecting ownership and title, such as deeds, mortgages, liens, and the like. It usually has the information arranged in chronological order to show the history of ownership. Often referred to simply as an abstract. Rather than referring to an abstract of title as a title, as is sometimes done, the better term would be examination of title or, as is also common, title examination, because legally, an abstract and a title are not the same thing.
Industry:Earth science
A basin draining to some depression or point within its region from which water is usually lost only be evaporation or percolation. (2) A basin without a surficuial outlet for precipitation falling on it.
Industry:Earth science
The initial bearing of one point from another, taken as the bearing of the rhumb-line between the two points with respect to a reference line.
Industry:Earth science
