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DOI | 10.1073/pnas.2017696118 |
Simple stochastic model for geomagnetic excursions and reversals reproduces the temporal asymmetry of the axial dipole moment | |
Alberto Molina-Cardín; Luis Dinis; María Luisa Osete | |
2021-03-09 | |
发表期刊 | Proceedings of the National Academy of Science |
出版年 | 2021 |
英文摘要 | We present a simple model for the axial dipole moment (ADM) of the geomagnetic field based on a stochastic differential equation for two coupled particles in a biquadratic potential, subjected to Gaussian random perturbations. This model generates aperiodic reversals and excursions separated by stable polarity periods. The model reproduces the temporal asymmetry of geomagnetic reversals, with slower decaying rates before the reversal and faster growing rates after it. This temporal asymmetry is possible because our model is out of equilibrium. The existence of a thermal imbalance between the two particles sets a preferential sense for the energy flux and renders the process irreversible. |
领域 | 地球科学 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/316949 |
专题 | 地球科学 |
推荐引用方式 GB/T 7714 | Alberto Molina-Cardín,Luis Dinis,María Luisa Osete. Simple stochastic model for geomagnetic excursions and reversals reproduces the temporal asymmetry of the axial dipole moment[J]. Proceedings of the National Academy of Science,2021. |
APA | Alberto Molina-Cardín,Luis Dinis,&María Luisa Osete.(2021).Simple stochastic model for geomagnetic excursions and reversals reproduces the temporal asymmetry of the axial dipole moment.Proceedings of the National Academy of Science. |
MLA | Alberto Molina-Cardín,et al."Simple stochastic model for geomagnetic excursions and reversals reproduces the temporal asymmetry of the axial dipole moment".Proceedings of the National Academy of Science (2021). |
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