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The response scenario of dayside magnetospheric plasma flows to the sudden increase of solar wind dynamic pressures was studied with 5 events from THEMIS observation. In all events we observed bipolar Vx(−/+) signatures as a response. The inferred flow vortices presented to be rotating clockwise and counterclockwise in the morning and afternoon side, respectively, as see from the north. Moreover,...
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...
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