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    ESA > Television > 2011 > 03 > GOCE: Geoid
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    GOCE: Geoid

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    • Title GOCE: Geoid
    • Released: 22/03/2011
    • Length 00:04:33
    • Language English
    • Footage Type Documentary
    • Copyright ESA
    • Description

      Launched on 17 March 2009, ESA's Gravity field and steady-state Ocean Circulation Explorer (GOCE) is bringing about a whole new level of understanding of one of Earth's most fundamental forces of nature: the gravity field. Dubbed the 'Formula 1' of satellites, GOCE is mapping Earth's gravity field in unprecedented detail.

      This has given rise to a unique model of the 'geoid', which is the surface of an hypothetical global ocean in the absence of tides and currents, shaped only by gravity. It is a crucial reference for measuring ocean circulation and sea-level change, which are affected by climate change.

      The colours in the image represent deviations in height ( -100 m to + 100 m) from an ideal geoid. The blue colours represent low values and the reds/yellows represent high values.

      See also: Earth's gravity revealed in unprecedented detail

      See also the transmission details for the MPEG-2 files.

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    • Activity Observing the Earth
    • Mission GOCE
    • System Future EO
    • Keywords Geoid, Gravitational field

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