geodesy

[jee-od-uh-see]

geodesy Definition

the scientific discipline that deals with the measurement and representation of the Earth, including its gravitational field, in three-dimensional time-varying space.

Using geodesy: Examples

Take a moment to familiarize yourself with how "geodesy" can be used in various situations through the following examples!

• Example

  Geodesy is used to measure changes in the Earth's shape and gravity field.

• Example

  Geodesy is important for navigation and mapping.

• Example

  Geodesy is used to study plate tectonics and earthquakes.

geodesy Synonyms and Antonyms

Synonyms for geodesy

• surveying
• cartography
• topography

Phrases with geodesy

• geodetic survey

  a survey that takes into account the curvature of the Earth's surface

  Example

  The geodetic survey was used to create accurate maps of the region.

• geodetic datum

  a reference point or set of points used to measure positions on the Earth's surface

  Example

  The geodetic datum used by GPS is the World Geodetic System.

• geoid

  the equipotential surface of the Earth's gravity field, which approximates mean sea level

  Example

  The geoid is used as a reference surface for measuring elevations.

Origins of geodesy

from Greek 'geodaisia', meaning 'division of the Earth'

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Summary: geodesy in Brief

Geodesy [jee-od-uh-see] is a scientific discipline that studies the Earth's shape, gravity field, and their changes over time. It is used for navigation, mapping, and studying plate tectonics and earthquakes. Geodesy involves geodetic surveys, geodetic datums, and the geoid, which is the equipotential surface of the Earth's gravity field.