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On The Nature of Turbulent Heating and Radial Transport in Saturn's Magnetosphere
Journal of Geophysical Research: Space Physics ( IF 2.8 ) Pub Date : 2020-12-11 , DOI: 10.1029/2020ja027986
B. R. Neupane 1 , Peter A. Delamere 1 , X. Ma 2 , C.‐S. Ng 1 , B. Burkholder 2 , Peter Damiano 1
Affiliation  

Based on magnetic field fluctuations, Saturn's magnetosphere can be divided into quiet (little or not much fluctuation) and disturbed periods (large fluctuation of the magnetic field). Kaminker et al. (2017, https://doi.org/10.1002/2016JA023834) showed that the average heating rate density of entire magnetosphere of Saturn is ∼10−17 W m−3 based on magnetic field fluctuations. Here, we categorize the magnetosphere of Saturn on the basis of magnetic field fluctuation. Using the eigenvalues of the variance analysis of the magnetic field, it has been found that the magnetodisc is in a disturbed state almost 6%–7% of the time. Dwell time normalization of the disturbed events suggests that most of the events happen at all latitudes between −5° and +30° and mostly on the dayside. Kinetic turbulent heating due to magnetic field fluctuation (δB) could potentially provide a significant amount of the required power.

中文翻译:

土星磁层湍流加热和径向输运的性质

根据磁场的波动,土星的磁层可以分为安静的(波动很小或波动不大)和受扰的周期(磁场的波动较大)。Kaminker等。(2017,https://doi.org/10.1002/2016JA023834)显示,土星整个磁层的平均加热速率密度约为10 -17  W m -3基于磁场波动。在这里,我们根据磁场波动对土星的磁层进行分类。使用磁场方差分析的特征值,已经发现,磁晶在大约6%–7%的时间内处于扰动状态。扰动事件的停留时间归一化表明,大多数事件发生在-5°至+ 30°的所有纬度上,并且大部分发生在白天。由于磁场波动(δB)而引起的动荡湍流加热可能会提供大量所需的功率。
更新日期:2021-01-11
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