Dayside response of the magnetosphere to a small shock compression Van Allen Probes, Magnetospheric MultiScale, and GOES-13

Dayside response of the magnetosphere to a small shock compression : Van Allen Probes, Magnetospheric MultiScale, and GOES-13

Observations from Magnetospheric MultiScale (~8 Re) and Van Allen Probes (~5 and 4 Re) show that the initial dayside response to a small interplanetary shock is a double-peaked dawnward electric field, which is distinctly different from the usual bipolar (dawnward and then duskward) signature report...

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Veröffentlicht in:Geophysical research letters. - 1984. - 44(2017), 17 vom: 16. Sept., Seite 8712-8720
1. Verfasser: Cattell, C (VerfasserIn)
Weitere Verfasser: Breneman, A, Colpitts, C, Dombeck, J, Thaller, S, Tian, S, Wygant, J, Fennell, J, Hudson, M K, Ergun, Robert, Russell, C T, Torbert, Roy, Lindqvist, Per-Arne, Burch, J
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2017
Zugriff auf das übergeordnete Werk:Geophysical research letters
Schlagworte:Journal Article electric field response interplanetary shock magnetopause radiation belt
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520 |a Observations from Magnetospheric MultiScale (~8 Re) and Van Allen Probes (~5 and 4 Re) show that the initial dayside response to a small interplanetary shock is a double-peaked dawnward electric field, which is distinctly different from the usual bipolar (dawnward and then duskward) signature reported for large shocks. The associated E × B flow is radially inward. The shock compressed the magnetopause to inside 8 Re, as observed by Magnetospheric MultiScale (MMS), with a speed that is comparable to the E × B flow. The magnetopause speed and the E × B speeds were significantly less than the propagation speed of the pulse from MMS to the Van Allen Probes and GOES-13, which is consistent with the MHD fast mode. There were increased fluxes of energetic electrons up to several MeV. Signatures of drift echoes and response to ULF waves also were seen. These observations demonstrate that even very weak shocks can have significant impact on the radiation belts 
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700 1 |a Breneman, A  |e verfasserin  |4 aut 
700 1 |a Colpitts, C  |e verfasserin  |4 aut 
700 1 |a Dombeck, J  |e verfasserin  |4 aut 
700 1 |a Thaller, S  |e verfasserin  |4 aut 
700 1 |a Tian, S  |e verfasserin  |4 aut 
700 1 |a Wygant, J  |e verfasserin  |4 aut 
700 1 |a Fennell, J  |e verfasserin  |4 aut 
700 1 |a Hudson, M K  |e verfasserin  |4 aut 
700 1 |a Ergun, Robert  |e verfasserin  |4 aut 
700 1 |a Russell, C T  |e verfasserin  |4 aut 
700 1 |a Torbert, Roy  |e verfasserin  |4 aut 
700 1 |a Lindqvist, Per-Arne  |e verfasserin  |4 aut 
700 1 |a Burch, J  |e verfasserin  |4 aut 
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856 4 0 |u http://dx.doi.org/10.1002/2017GL074895  |3 Volltext 
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