Abstract
Using 25 observations of damped oscillatory flow behavior in the near‐Earth plasma sheet by the five THEMIS probes during the 2008–2009 magnetotail seasons, we derive the parameters of an oscillating thin filament, such as its oscillation period, damping factor, and entropy. To facilitate comparison with theory, we use measured pressures and magnetic fields with an empirical model to achieve a quantitative representation of the overall structure of the plasma sheet during each event. Because the observed oscillation period of the filament agrees with the oscillation period predicted by Wolf et al. (2012), the observed damped oscillatory flow behavior in the near‐Earth plasma sheet is most likely caused by oscillatory braking of the filament.
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