- Branche: 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 process of determining the exterior and interior orientation of a camera while solving at the same time for the coordinates of the object photographed.
Industry:Earth science
An orbit whose plane coincides, or almost coincides, with the plane of the equator.
Industry:Earth science
An orbit in which the satellite has a period exactly equal to the Earth's period of rotation and in the same direction. If the orbit is circular and inclined to the equator, the satellite appears to describe a figure 8 once every 24 hours. If the orbit is equatorial, the satellite appears to be stationary in the sky. Because no orbit is perfectly circular, the satellite's motion will vary slightly about the average, ideal location.
Industry:Earth science
The discharge from an orifice 1-inch square under a definitely specified head (pressure). The value of a miners inch has been fixed by statute in various Sates as follows: Arizona, California, Montana and Oregon: 40 miners inches are the equivalent of 1 cubic foot per second; Idaho, Nebraska, Nevada, New Mexico, North Dakota, South Dakota and Utah: 50 miners inches are the equivalent of 1 cubic foot per second; Colorado: 38.440 miners inches are accepted as equivalent to 1 cubic foot per second; British Columbia: 35.7 miners inches are equivalent to 1 cubic foot per second; in some parts of California: 40 miners inches to 1 cubic foot per second is used, whereas in southern California: 50 miners inches to 1 cubic foot per second is used regardless of the legal definition.
Industry:Earth science
A coordinate system defining the coordinates of points on a photograph. Note that this use of the term is probably peculiar to photogrammetry. The origin is usually at the principal point, but may be at the nadir point, isocenter, a fiducial mark, etc. The axes are usually either the lines through the fiducial marks or the principal line and a photograph parallel.
Industry:Earth science
In the process of constructing, enlarging, or improving a highway, the process by which property is sought to be acquired for the highway, the process proceeding through discussion, conference, and final agreement upon the terms of a voluntary transfer of such property.
Industry:Earth science
A surveyor's tape made of the alloy lovar. Lovar is less expensive than invar but has a larger coefficient of thermal expansion than invar.
Industry:Earth science
(1) The astronomical magnitude of an object as judged by the human eye, but taking into account the sensitivity of the eye and the color of the object. (2) The magnitude of a celestial object as estimated by the eye.
Industry:Earth science
A small-scale map showing physiographic features by means of standardized, pictorial symbols based on the appearance such features would have if viewed obliquely from the air. This definition is very similar to that of physiographic pictorial map, and it is quite possible that the terms were originally intended to denote the same concept.
Industry:Earth science
A hypothetical concentration of mass, used to explain a large gravity anomaly. The term is a contraction of mass concentration. It was first introduced as a name for the masses causing variations observed in the trajectory of a spacecraft moving around the Moon. The concept itself, however, has long been common in geophysics.
Industry:Earth science
