地磁场逆转的随机性

Random of the Reverse in Terrestrial Magnetic Field

采用Rikitake模型对地磁场逆转的随机性进行理论研究 .研究结果表明 ,该模型所描述的非线性系统的定态是不稳定的 ,通过计算系统的分维判定系统失稳后的演化状态为混沌态 .数值模拟的混沌吸引子与实际监测地磁场发生的随机性逆转的事实相吻合 .

Random of the reverse in terrestrial magnetic field is studied theoretically by using of Rikitake model. The result indicates the static states in the nonlinear system is unstable, and judges the evolution pattern is chaotic after it becomes unstable by calculating fractal dimension. The chaotic attractor of the numerical simulation is consistent with the fact of random of the reverse in terrestrial magnetic field.