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- W4223452010 abstract "<strong class=journal-contentHeaderColor>Abstract.</strong> Magnetotail earthward fast flow bursts can transport most magnetic flux and energy into the inner magnetosphere. These fast flow bursts are generally an order of magnitude higher than the typical convection speeds that are azimuthally localised (1â3â<span class=inline-formula><i>R</i><sub>E</sub></span>) and are flanked by plasma vortices, which map to ionospheric plasma vortices of the same sense of rotation. This study uses a multipoint analysis of conjugate magnetospheric and ionospheric observations to investigate the magnetospheric and ionospheric responses to fast flow bursts that are associated with both substorms and pseudobreakups. We study in detail what properties control the differences in the magnetosphereâionosphere responses between substorm fast flow bursts and pseudobreakup events, and how these differences lead to different ionospheric responses. The fast flow bursts and pseudobreakup events were observed by the Time History of Events and Macroscale Interaction during Substorms (THEMIS), while the primary ionospheric observations were made by all-sky cameras and magnetometer-based equivalent ionospheric currents. These events were selected when the satellites were at least 6â<span class=inline-formula><i>R</i><sub>E</sub></span> from the Earth in radial distance and a magnetic local time (MLT) region of <span class=inline-formula>±</span>â5â<span class=inline-formula>h</span> from local midnight. The results show that the magnetosphere and ionosphere responses to substorm fast flow bursts are much stronger and more structured compared to pseudobreakups, which are more likely to be localised, transient and weak in the magnetosphere. The magnetic flux in the tail is much stronger for strong substorms and much weaker for pseudobreakup events. The <span class=inline-formula><i>B</i><sub>lobe</sub></span> decreases significantly for substorm fast flow bursts compared to pseudobreakup events. The curvature force density for pseudobreakups are much smaller than substorm fast flow events, indicating that the pseudobreakups may not be able to penetrate deep into the inner magnetosphere. This association can help us study the properties and activity of the magnetospheric earthward flow vortices from ground data." @default.
- W4223452010 created "2022-04-14" @default.
- W4223452010 creator A5032358362 @default.
- W4223452010 date "2022-04-12" @default.
- W4223452010 modified "2023-09-30" @default.
- W4223452010 title "Reply on RC2" @default.
- W4223452010 doi "https://doi.org/10.5194/angeo-2022-3-ac4" @default.
- W4223452010 hasPublicationYear "2022" @default.
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