- 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 ratio of the brightness of highlights to the deepest shadow in the actual terrain, as measured from the camera stations, for field of view under consideration.
Industry:Earth science
The formula ΔH = (W - U)/go, where W is the potential on a particular equipotential surface of the Earth and U is the potential on an equipotential ellipsoid; ΔH is the difference of elevation between the two surfaces at the point where the gravity is g<sub>o</sub>.
Industry:Earth science
(1) In the region between the Moon and the Earth. (2) In the region between the Moon's orbit and the Earth's orbit.
Industry:Earth science
In bathymetry, a compilation on a specially-prepared, matte, plastic sheet, depicting uncorrected or discrete soundings.
Industry:Earth science
A barrier built in the water so as to form an enclosure from which water can be pumped to permit free access to the space bounded by the dam.
Industry:Earth science
The equation (a b)/a + (τ<sub>p</sub> - τ<sub>e</sub>)/ τ<sub>e</sub> =(5ω²a/2τ<sub>e</sub>) - f(f + ω²a/τ<sub>e</sub>) + aC4/4, in which τ<sub>p</sub> and τ<sub>e</sub> are the values of gravity acceleration at the poles and at the equator, respectively, of an equipotential, rotational ellipsoidal solid having equatorial diameter 2a and polar diameter 2b and rotating at the rate ω. f is the flattening, (a b)/a and C4 is the coefficient of the fourth-degree term in the representation of the geopotential by a Legendre series.
Industry:Earth science
The depiction, on a specially prepared, matte, sheet of plastic, of sounding data corrected to true depths.
Industry:Earth science
(1) A chart of equatorial regions. (2) A chart on an equatorial aspect of a map-projection.
Industry:Earth science
A compass equipped with a lens which permits the user to read, conveniently, the far side of the movable dial.
Industry:Earth science
