- 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, ...
That part of the gravimetric deflection of the vertical which is caused by the gravitational pull of topographic masses and by isostatic compensation.
Industry:Earth science
(1) A topographic map portraying relief by means of contour lines. (2) A map showing the elevations and configuration of the ground by contour lines and lacking any other details except notations and the elevations of contours.
Industry:Earth science
Having a rotary motion which is counterclockwise, as viewed from above, in the Northern Hemisphere and clockwise, as viewed from above, in the Southern Hemisphere. Cyclonic motion is undefined at the equator.
Industry:Earth science
A corner, on a map, for which no marks have been identified on the ground. The locations are determined by adjustment and are indicated on the map only by the intersections of the subdivisions' lines.
Industry:Earth science
Damages to property arising as a consequence of a taking and/or construction on other lands. In many States, the owner may be compensated for damage as a consequence of a change in grade of a street which adversely affects ingress to and egress from the affected property. The owner may not be compensated for damage to business, for frustration, or for loss of good will which result as a consequence of a taking or construction by the government.
Industry:Earth science
One of a set of hairs, filaments, or etched lines placed on a reticle held in the focal plane of a telescope. It is used as an index mark for pointing the telescope when pointings and readings must be made on a leveling rod or stadia rod, when objects must be aligned, etc.
Industry:Earth science
(1) The angle by which a magnetic compass aboard a craft deviates from magnetic north as a result of instrumental error and the magnetic effects of the craft and its contents. (2) The angle between the magnetic meridian and the axis of a compass card, expressed in degrees east or west to indicate the amount by which the northern end of the compass card is offset from magnetic north.
Industry:Earth science
The difference between corresponding angles made by a great circle drawn on a sphere and intersecting two meridians.
Industry:Earth science
(1) Something made to assist in doing a task. (2) A simple or crude instrument.
Industry:Earth science
(1) A legally enforceable agreement between two or more competent persons to do or refrain from doing something. (2) The same as the preceding definition, except that the agreement is for a consideration.
Industry:Earth science
