GOCE : le champ de gravité terrestre à la carte


GOCE in orbit
 
In orbit, the same side of the GOCE satellite remains facing the Sun. The spacecraft is equipped with four body-mounted and two wing-mounted solar panels. Due to the configuration in orbit, the solar panels will experience extreme temperature variations so it was necessary to use materials that will tolerate temperatures as high as 160ºC and as low as -170ºC.

6 accéléromètres ultra sensibles
 
Building a picture of the gravity field
 
GOCE will map the global variations in Earth's gravity with extreme detail and provide a unique model of the gravity field and geoid. The geoid is the surface of equal gravitational potential defined by the gravity field and is crucial for improving our understanding of ocean circulation, sea-level change and terrestrial ice dynamics, all of which are affected by climate change. GOCE-derived data will also provide new insight into processes occurring in the lithosphere and upper mantle. In addition, data will be used for practical applications such as surveying and levelling.



Release date: 4 septembre 2008