Mapping science

Mapping science

The systemic study of the processes and designs involved with map making.

Industry: Earth science

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Mapping science

Efficiency

Earth science; Mapping science

A desirable property of estimators; an efficient estimator is the unbiased estimator with the smallest variance among unbiased estimators of the same parameter.

Egress

Earth science; Mapping science

(1) The act or right of going from a place of real or seeming confinement. (2) A place or means of exit; an outlet. (3) The emergence of a celestial body from eclipse, occultation, or transit.

Geostrophic equation

Earth science; Mapping science

An equation which represents a balance between the horizontal difference of pressure, in a fluid, and the Coriolis force per unit area. The equation used to compute the speed of the current is v ...

The theoretical phase of a constituent of the equilibrium tide. It is usually represented as the sum of two angles V and u, in which V is a uniformly and rapidly changing angle involving multiples ...

Astrometric ephemeris

Earth science; Mapping science

An ephemeris, of a celestial body in the Solar System, in which the tabulated positions are directly comparable to the mean places of stars listed in catalogues for some standard epoch. An ...

End standard of length

Earth science; Mapping science

A bar or block whose ends or sides are flat and contain a defined or otherwise known length between them. The ends are usually optically flat (i.e., flat to within a fraction of a wavelength of ...

Editing

Earth science; Mapping science

The process of checking a map or chart in its preparatory stages to ensure accuracy, completeness and, in its printed form, legibility and precision. The various stages of editing are also referred ...