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10.1038/ncomms10422 http://scihub22266oqcxt.onion/10.1038/ncomms10422 C4737809!4737809!26814368     free     free     free       Nat+Commun 2016 ; 7 (ä): ä Nephropedia Template TP {{tp|p=26814368|t=2016. Gyre-driven decay of the Earth s magnetic dipole |pdf=|usr=}}{{26814368}} gab.com Text Gyre-driven decay of the Earth s magnetic dipole JO: Nat Commun http://www.kidney.de/pget.php?&tw=1&pmid=26814368 #FOAvip Direct observations indicate that the magnitude of the Earth's magnetic axial dipole has decreased over the past 175 years; it is now 9% weaker than it was in 1840. Here we show how the rate of dipole decay may be controlled by a planetary-scale gyre in the liquid metal outer core. The gyre's meridional limbs on average transport normal polarity magnetic flux equatorward and reverse polarity flux poleward. Asymmetry in the geomagnetic field, due to the South Atlantic Anomaly, is essential to the proposed mechanism. We find that meridional flux advection accounts for the majority of the dipole decay since 1840, especially during times of rapid decline, with magnetic diffusion making an almost steady contribution generally of smaller magnitude. Based on the morphology of the present field, and the persistent nature of the gyre, the current episode of dipole decay looks set to continue, at least for the next few decades. Twit Text FOAVip Gyre-driven decay of the Earth s magnetic dipole ????Nat Commun http://www.kidney.de/pget.php?&tw=1&pmid=26814368 #FOAvip Twit Text # Free Paper on # # # # # LINK http://www.kidney.de/pget.php?&tw=1&pmid=26814368 #FOAvip English Wikipedia <ref>{{Cite pmid|26814368}}</ref> Gyre-driven decay of the Earth s magnetic dipole #MMPMID26814368 Finlay CC; Aubert J; Gillet N Nat Commun 2016[]; 7 (ä): ä PMID26814368show ga Direct observations indicate that the magnitude of the Earth's magnetic axial dipole has decreased over the past 175 years; it is now 9% weaker than it was in 1840. Here we show how the rate of dipole decay may be controlled by a planetary-scale gyre in the liquid metal outer core. The gyre's meridional limbs on average transport normal polarity magnetic flux equatorward and reverse polarity flux poleward. Asymmetry in the geomagnetic field, due to the South Atlantic Anomaly, is essential to the proposed mechanism. We find that meridional flux advection accounts for the majority of the dipole decay since 1840, especially during times of rapid decline, with magnetic diffusion making an almost steady contribution generally of smaller magnitude. Based on the morphology of the present field, and the persistent nature of the gyre, the current episode of dipole decay looks set to continue, at least for the next few decades. äGyre-driven decay of the Earth s magnetic dipole (epmc).pdf DeepDyve Pubget Overpricing