Swarm: A constellation to study the Earth's magnetic field

Publication: Research - peer-reviewJournal article – Annual report year: 2006

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The Swarm mission was selected as the 5th mission in ESA's Earth Explorer Programme in 2004. The mission will provide the best ever survey of the geomagnetic field and its temporal evolution that will lead to new insights into the Earth system by improving our understanding of the Earth's interior and its effect on Geospace, the vast region around the Earth where electrodynamic processes are influenced by the Earth's magnetic field. Scheduled for launch in 2010, the mission will comprise a constellation of three satellites, with two spacecraft flying side-by-side at lower attitude (450 km initial attitude), thereby measuring the East-West gradient of the magnetic field, and the third one flying at higher attitude (530 km). High-precision and high-resolution measurements of the strength, direction and variation of the magnetic field, complemented by precise navigation, accelerometer and electric field measurements, will provide the necessary observations that are required to separate and model the various Sources of the geomagnetic field. This results in it unique "view" inside the Earth from space to study the composition and processes of its interior. It also allows analysing the Sun's influence within the Earth system. In addition practical applications in many different areas, such as space weather, radiation hazards, navigation and resource management, will benefit from the Swarm concept.
Original languageEnglish
JournalEarth Planets and Space
Publication date2006
Volume58
Journal number4
Pages351-358
ISSN1343-8832
StatePublished

Keywords

  • Swarm satellites, geomagnetism, magnetic field mission
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