Dipolarization front and current disruption
نویسندگان
چکیده
منابع مشابه
Cross-tail current evolution during substorm dipolarization
We examine evolution of the cross-tail current during substorm current disruption/dipolarization using observations from two satellites in the near-Earth magnetotail at the downtail distances of 8–9RE. By choosing times when these two satellites are separated, mainly in the north–south distance in the tail current sheet, precise determination of current density in the layer embedded between the...
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[1] For the Earth magnetotail, the Svenes et al. (2008) statistical study infers the lobe density to be highly variable, in the range of 0.007–0.092 cm . Such lobe density variation modifies reconnection diffusion region physical processes and reconnection rate drastically. This letter addresses observable reconnection signatures in the vicinity of the X-line that are to be affected by the dyna...
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Recent emphasis on dipolarization fronts (DFs) has led to the impression that DFs play a significant role in bringing magnetic flux to the inner magnetosphere during substorms. In this work, we investigate the amount of magnetic flux transport associated with DFs by examining the frozen-in field line condition (FIC) for previously reported DF events. A study of 18 DF cases shows that the FIC do...
متن کاملComparison of current disruption and magnetic reconnection
We examine similarities and differences between the concepts of current disruption (CD) and magnetic reconnection (MR). Both concepts have been invoked to account for explosive phenomena that involve energy transformation from magnetic field to charged particles. Similarities of these two concepts include (1) the occurrence of breakdown in magnetic connectivity, (2) magnetic energy as the prima...
متن کاملCluster and Double Star observations of dipolarization
We studied two types of dipolarization events with different IMF conditions when Cluster and Double Star (TC1) were located in the same local time sector: 7 August 2004, 18:00–24:00 UT, during a disturbed southward/northward IMF interval, and 14 August 2004, 21:00–24:00 UT, when the IMF was stably northward. Cluster observed dipolarization as well as fast flows during both intervals, but this w...
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ژورنال
عنوان ژورنال: Geophysical Research Letters
سال: 2016
ISSN: 0094-8276,1944-8007
DOI: 10.1002/2016gl070980