Magnetic field reversals and long-time memory in conducting flows
Employing a simple ideal magnetohydrodynamic model in spherical geometry, we show that the presence of either rotation or finite magnetic helicity is sufficient to induce dynamical reversals of the magnetic dipole moment. The statistical character of the model is similar to that of terrestrial magne...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_15393755_v90_n4_p_Dmitruk |
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todo:paper_15393755_v90_n4_p_Dmitruk2023-10-03T16:22:50Z Magnetic field reversals and long-time memory in conducting flows Dmitruk, P. Mininni, P.D. Pouquet, A. Servidio, S. Matthaeus, W.H. Magnetic field reversal Employing a simple ideal magnetohydrodynamic model in spherical geometry, we show that the presence of either rotation or finite magnetic helicity is sufficient to induce dynamical reversals of the magnetic dipole moment. The statistical character of the model is similar to that of terrestrial magnetic field reversals, with the similarity being stronger when rotation is present. The connection between long-time correlations, 1/f noise, and statistics of reversals is supported, consistent with earlier suggestions. © 2014 American Physical Society. Fil:Dmitruk, P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Mininni, P.D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_15393755_v90_n4_p_Dmitruk |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Magnetic field reversal |
| spellingShingle |
Magnetic field reversal Dmitruk, P. Mininni, P.D. Pouquet, A. Servidio, S. Matthaeus, W.H. Magnetic field reversals and long-time memory in conducting flows |
| topic_facet |
Magnetic field reversal |
| description |
Employing a simple ideal magnetohydrodynamic model in spherical geometry, we show that the presence of either rotation or finite magnetic helicity is sufficient to induce dynamical reversals of the magnetic dipole moment. The statistical character of the model is similar to that of terrestrial magnetic field reversals, with the similarity being stronger when rotation is present. The connection between long-time correlations, 1/f noise, and statistics of reversals is supported, consistent with earlier suggestions. © 2014 American Physical Society. |
| format |
JOUR |
| author |
Dmitruk, P. Mininni, P.D. Pouquet, A. Servidio, S. Matthaeus, W.H. |
| author_facet |
Dmitruk, P. Mininni, P.D. Pouquet, A. Servidio, S. Matthaeus, W.H. |
| author_sort |
Dmitruk, P. |
| title |
Magnetic field reversals and long-time memory in conducting flows |
| title_short |
Magnetic field reversals and long-time memory in conducting flows |
| title_full |
Magnetic field reversals and long-time memory in conducting flows |
| title_fullStr |
Magnetic field reversals and long-time memory in conducting flows |
| title_full_unstemmed |
Magnetic field reversals and long-time memory in conducting flows |
| title_sort |
magnetic field reversals and long-time memory in conducting flows |
| url |
http://hdl.handle.net/20.500.12110/paper_15393755_v90_n4_p_Dmitruk |
| work_keys_str_mv |
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1807314553418022912 |