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| Titel |
Revisiting the South Atlantic Anomaly after 3 years of Swarm satellite
mission |
| VerfasserIn |
F. Javier Pavón-Carrasco, Saioa A. Campuzano, Angelo De Santis |
| Konferenz |
EGU General Assembly 2017
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250146282
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| Publikation (Nr.) |
 EGU/EGU2017-10299.pdf |
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| Zusammenfassung |
| Covering part of Southern America and the South Atlantic Ocean, the South Atlantic
Anomaly (SAA) is nowadays one of the most important and largest features of the
geomagnetic field at the Earth’s surface. It is characterized by lower intensity values than
expected for those geomagnetic latitudes. Thanks to the global geomagnetic models, the
spatial and temporal geometry of the Earth’s magnetic field can be defined at the core-mantle
boundary, showing the origin of the SAA as a reversal polarity patch that is growing
with a pronounced rate of -2.54⋅105 nT per century and with western drift. Since
the Swarm satellite mission of the European Space Agency was launched at the
end of 2013, the three twin satellites are picking up the most accurate values of
the geomagnetic field up to now. In this work, we use the satellite magnetic data
from Swarm mission along with the observatory ground data of surrounding areas
to evaluate the spatial and temporal evolution of the SAA during the Swarm-life. |
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