- 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, ...
An atoll the principal material of which is coral. Geodetic markers cannot be emplaced on coral atolls in the same way as they are emplaced in igneous or metamorphic rock because the coral is much softer and is often impregnated with salt water.
Industry:Earth science
(1) The interval of time between two successive upper or lower transits of the Sun through a meridian of the Moon. (2) The interval of time from one upper transit of the Moon through a meridian of the Earth to the next upper transit. It is about 24 hours 50 minutes 24. 9 seconds long, on the average, but varies as much as 10 minutes from this value.
Industry:Earth science
Zoning restricting the largest number of houses per unit area that may be built within a particular subdivision.
Industry:Earth science
A survey made, while construction is in process, to control elevation, horizontal location and dimensions, and configuration; to determine if the construction was adequately completed; and to obtain dimensions essential for calculating quantities used in paying for construction.
Industry:Earth science
Two turnouts with the track between the frogs arranged to form a continuous passage between two nearby, generally parallel, tracks.
Industry:Earth science
A depth (distance) obtained from a measurement on the graphic record of an echo sounding.
Industry:Earth science
A printing, on glass, of the contour drawing used to make the etched zinc-plate.
Industry:Earth science
