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Using the solar wind data obtained from OMNI web, we find 1778 dynamic pressure enhancement events during Mar 2007 to Dec 2012. Then we check the responses of Magnetospheric plasma flows to these events and find 64 responses show clear sudden impulse (SI) signatures from THEMIS observations. We superpose the initial responses of the flows in one plot to find two flow vortices exist at two sides of...
During southward interplanetary magnetic field (IMF), the electron and ion boundary are separated near the dayside boundary layer. Here we show observations at the high latitude magnetosphere tailward of the cusp during northward IMF. We find that the ion edge is observed firstly and then the electron edge is found by Cluster. Detailed analysis indicates that this is caused by the reconnection at...
Cluster four spacecraft data is used to study the spatial-temporal characteristics in/near the high and mid-altitude cusp under northward IMF. In our previous work a transition layer equatorward of the cusp was observed, which is suggested to be the entry layer during northward IMF. From event study and a further survey tailward of the Cusp, some transport processes of sheath-like ions in the magnetosphere...
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