Geodesy

An old geodetic pillar (1855) at Ostend, Belgium

A Munich archive with lithography plates of maps of Bavaria

Geodetic Control Mark (example of a deep benchmark)

Geodesy (/dʒiːˈɒdᵻsi/), — also known as geodetics or geodetics engineering — a branch of applied mathematics and earth sciences, is the scientific discipline that deals with the measurement and representation of the Earth, including its gravitational field, in a three-dimensional time-varying space. Geodesists also study geodynamical phenomena such as crustal motion, tides, and polar motion. For this they design global and national control networks, using space and terrestrial techniques while relying on datums and coordinate systems.

单词	Geodetic survey
释义	Geodetic survey 英语百科 Geodesy Geodesy (/dʒiːˈɒdᵻsi/), — also known as geodetics or geodetics engineering — a branch of applied mathematics and earth sciences, is the scientific discipline that deals with the measurement and representation of the Earth, including its gravitational field, in a three-dimensional time-varying space. Geodesists also study geodynamical phenomena such as crustal motion, tides, and polar motion. For this they design global and national control networks, using space and terrestrial techniques while relying on datums and coordinate systems.
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Geodetic survey

Geodesy