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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >Penetration electric fields driving main phase Dst
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Penetration electric fields driving main phase Dst

机译：Dst渗透电场驱动的主要阶段

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On the basis of three selection criteria we have analyzed the main phase electrodynamics of 17 magnetic storms that occurred between 1999 and mid-2005: (1) the availability of solar wind measurements from the Advanced Composition Explorer (ACE) satellite, (2) a minimum Dst ≤ -100 nT, and (3) no significant recovery episode between the beginning and maximum epoch of the main phase (dDst/dt > 0). We combined the Volland-Stern and Siscoe-Hill models to estimate the intensities of electric fields (E VS) in the equatorial plane as the polar cap potential divided by the width of the magnetosphere along the dawn-dusk axis. A survey of provisional Dst and E VS traces over the 5.5 years of interest shows that all sustained excursions of E VS above quiet time levels of 0.22 ± 0.08 mV/m were closely tied to the main phases of storms. In every instance, E VS returned to background at or near the beginning of the recovery phase. The data indicate very high correlations between Dst and I VS = ∫E VS dt during the main phase of all selected storms.
机译：三个选择标准的基础上17的主要阶段电动力学分析磁性风暴发生在1999年2005年代中期:(1)太阳风的可用性测量的先进成分Explorer (ACE)卫星,(2)最低Dst≤-100元,(3)没有明显复苏的开始和最大时代之间主要阶段(dDst / dt > 0)。我们结合Volland-Stern和Siscoe-Hill模型来估计电场的强度(E VS)赤道平面的极冠潜力除以磁气圈的宽度dawn-dusk轴。5.5年和E VS痕迹显示以上持续远足E VS安静的时间水平的0.22±0.08 mV / m密切相关的主要阶段风暴。每一个实例,E和背景或返回在恢复阶段的开始。数据显示很高的Dst之间的相关性我和VS =∫E VS dt的主要阶段选定的风暴。

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