Three‐dimensional test simulations of the outer radiation belt electron dynamics including electron‐chorus resonant interactions
Three‐dimensional test simulations of the outer radiation belt electron dynamics including electron‐chorus resonant interactions
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DOI：
10.1029/2007ja012862
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发表时间：
2008-12
影响因子：
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通讯作者：
A. Varotsou;D. Boscher;S. Bourdarie;R. Horne;N. Meredith;S. Glauert;R. Friedel
中科院分区：
文献类型：
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作者：
A. Varotsou;D. Boscher;S. Bourdarie;R. Horne;N. Meredith;S. Glauert;R. Friedel
[1]我们目前的结果，从我们的三维（3-D）模拟使用Salambo电子辐射带的物理模型。我们已经运行了稳态和动态风暴的测试情况下模拟研究电子合唱共振相互作用的辐射带电子动力学的影响。当电子合唱相互作用的代码外的等离子体，结果表明，一个kappa分布和特征能量为2 keV的种子人口被加速到几个兆电子伏的外辐射带。MeV的电子通量增加的数量级在高磁活动条件下，特别是在L* 105和赤道镜像粒子附近。我们还对各种重要参数进行了参数化研究，以研究我们的结果如何受到表征其值的不确定性的影响。这项研究的结果表明，如果我们考虑更高的径向扩散系数值，不同的初始状态，和不同的边界条件下，我们总是观察到一个峰值时，电子合唱相互作用的MeV电子的L* 分布。
[1] We present results from our three-dimensional (3-D) simulations using the Salammbo electron radiation belt physical model. We have run steady state and dynamic storm test case simulations to study the effect of electron-chorus resonant interactions on the radiation belt electron dynamics. When electron-chorus interactions are introduced in the code outside the plasmasphere, results show that a seed population with a kappa distribution and a characteristic energy of 2 keV is accelerated up to a few MeV in the outer radiation belt. MeV electron fluxes increase by an order of magnitude during high magnetic activity conditions especially near L* ∼ 5 and for equatorial mirroring particles. We have also performed a parametric study of various important parameters to investigate how our results could be influenced by the uncertainty that characterizes their values. Results of this study show that if we consider higher values of the radial diffusion coefficients, different initial states, and different boundary conditions, we always observe a peak in the L* profile of the MeV electrons when electron-chorus interactions are included.