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North-south asymmetry of ultra-low-frequency oscillations of Earth’s electromagnetic field

机译：地球电磁场的超低频振荡的南北不对称

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In the paper, we present the result of an experimental study of north-south asymmetry of ultralow-frequency electromagnetic oscillations IPCL. This study is based on observations made at Mirny Observatory (Antarctica). IPCLs are excited in the dayside sector of the auroral oval in the range 3–10 min periods and represent one of the most powerful types of oscillations of Earth's magnetosphere. These oscillations were discovered in the 1970s during IPhE AS USSR polar expeditions organized by Prof. V.A. Troitskaya. We have shown that IPCL activity in Mirny depends on the inclination (north-south asymmetry) of interplanetary magnetic field (IMF) lines to the plane of the geomagnetic equator before the front of the magnetosphere. The result suggests a controlling exposure of IMF on the magnetospheric oscillations and gives rise to the hypothesis that IPCL are forced oscillations of a nonlinear dynamical system whose major structural elements are dayside polar cusps. The paper is dedicated to the memory of Professor V.A. Troitskaya (1917–2010).
机译：在本文中，我们介绍了超低频电磁振荡IPCL的南北不对称性的实验研究结果。这项研究基于南极米尔尼天文台的观测结果。 IPCL在3-10分钟的时间范围内在极光椭圆形的白天扇区中被激发，是地球磁层最有力的振荡类型之一。这些振荡是在1970年代由V.A.教授组织的IPhE AS苏联极地考察中发现的。 Troitskaya。我们已经证明，米尔尼的IPCL活动取决于行星际磁场（IMF）线相对于磁层前的地磁赤道平面的倾斜度（南北不对称）。结果表明，IMF在磁层振荡上的控制暴露，并提出了IPCL是非线性动力学系统的强迫振荡的假设，该非线性动力学系统的主要结构要素是日间极尖。该论文致力于纪念V.A.教授。特洛伊茨卡娅（1917–2010）。

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