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The kink-like flapping motion is a global oscillation of the magnetotail current sheet (Sergeev et al., 2004;Sergeev et al., 2006) and is correlated with fast flows (Sergeev et al., 2006), which contributes to the explosive magnetotail activity (Sitnov et al., 2019). The period of these wave-like oscillations varies from couple of minutes (
In particular, in Earth's magnetotail, jets take the form of high speed (V > 400 km s −1 ) transient Earthward plasma flows referred to as bursty bulk flows (BBFs) (Angelopoulos et al., 1992(Angelopoulos et al., , 1994. These BBFs play a crucial role in magnetotail activity (Sitnov et al., 2019). BBFs are seen as short living narrow flow channels which last 10-100 s (Baumjohann et al., 1990) and extend over ∼2-3 R E in the dawn-dusk direction (Nakamura et al., 2004). At the leading edge, BBFs are accompanied by a sharp dipolarization (i.e., increase of the northward magnetic field B z ) of the magnetic field called dipolarization fronts (DFs) (
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