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dc.contributor.authorCampuzano, S. A.es_ES
dc.contributor.authorGómez-Paccard, Miriames_ES
dc.contributor.authorPavón-Carrasco, Fco. Javieres_ES
dc.contributor.authorOsete, María Luisaes_ES
dc.identifier.citationEarth and Planetary Science Letters 512: 17-26 (2019)es_ES
dc.description.abstractThe South Atlantic Anomaly (SAA) is one of the most outstanding features of the present geomagnetic field. Thus, a good knowledge of the SAA is clue for a better understanding of the dynamical behavior of the geomagnetic field. To achieve this goal, paleomagnetic data are crucial since they provide the unique way to investigate past changes in the Earth's magnetic field. Here, we present a new global geomagnetic field reconstruction, the SHAWQ2k model, which is based on a critical revision of the global archeomagnetic and volcanic dataset. The new model provides an improved description of the geomagnetic field during the last 2 millennia, and yields surprising outcomes about the emergence and development of the SAA. It shows that the reversed flux patch observed at the core-mantle boundary and linked to the SAA, emerged in the Southern Hemisphere from at least 950 AD. This patch moved westward from the equator to southern latitudes, being clearly isolated after 1400 AD. In addition, since 1550 AD a second reversed flux patch moving northeastward is observed in the North Atlantic. The new data now available for the Southern Hemisphere coming from Africa and South America together with the use of an appropriated weighting scheme in the modeling process have improved our understanding of past geomagnetic field behavior and showed new evolutionary aspects of the SAA.es_ES
dc.subjectGeomagnetic field modeles_ES
dc.subjectquality paleomagnetic dataes_ES
dc.subjectSouth Atlantic Anomalyes_ES
dc.titleEmergence and evolution of the South Atlantic Anomaly revealed by the new paleomagnetic reconstruction SHAWQ2kes_ES
dc.description.peerreviewedPeer reviewedes_ES
oprm.item.hasRevisionno ko 0 false*
dc.contributor.orcidCampuzano, S. A. [0000-0001-7047-5704]es_ES
dc.contributor.orcidGómez-Paccard, Miriam [0000-0002-9339-3047]es_ES
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