Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/5557
AuthorsDe Santis, A.* 
Qamili, E.* 
TitleEquivalent monopole source of the geomagnetic South Atlantic Anomaly
Issue DateMay-2009
URIhttp://hdl.handle.net/2122/5557
KeywordsSouth Atlantic Anomaly
equivalent monopole source
Earth core topography
Subject Classification04. Solid Earth::04.05. Geomagnetism::04.05.02. Geomagnetic field variations and reversals 
04. Solid Earth::04.05. Geomagnetism::04.05.04. Magnetic anomalies 
AbstractThe South Atlantic magnetic Anomaly (SAA) is an important feature of the present geomagnetic field. In this paper we model the space-time evolution of this anomaly for the last 400 years in terms of the resultant between a decrease of a global axial dipole and an increase of a virtual local monopole source. Some characteristics of this evolution are investigated and some considerations are made on the light of a possible special state of the global geomagnetic field dynamical regime. Among the possible speculations, one is made regarding the topography of the core-mantle boundary (CMB) and its possible aspect underneath the SAA region in terms of simple sinusoidal undulations met by the monopole source during its centennial motion.
Appears in Collections:Papers Published / Papers in press

Files in This Item:
File Description SizeFormat 
SAA_Monopole_Pageoph_rev3_in press.pdf1.13 MBAdobe PDFView/Open
Show full item record

Page view(s)

94
checked on Apr 22, 2017

Download(s)

512
checked on Apr 22, 2017

Google ScholarTM

Check