Publication Date:
2016-06-08
Description:
An active storm period in June 2015 showed that particle injection events seen sequentially by the four MMS (Magnetospheric Multiscale) spacecraft subsequently fed the enhancement of the outer radiation belt observed by Van Allen Probes mission sensors. Several episodes of significant southward interplanetary magnetic field (IMF) along with a period of high solar wind speed (V sw ≳500 km/s) on 22 June occurred following strong interplanetary shock wave impacts on the magnetosphere. Key events on 22 June 2015 show that the magnetosphere progressed through a sequence of energy-loading and stress-developing states until the entire system suddenly reconfigured at 1932 UT. Energetic electrons, plasma, and magnetic fields measured by the four MMS spacecraft revealed clear dipolarization front characteristics. It was seen that magnetospheric substorm activity provided a “seed” electron population as observed by MMS particle sensors as multiple injections and related enhancements in electron flux.
Print ISSN:
0094-8276
Electronic ISSN:
1944-8007
Topics:
Geosciences
,
Physics
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