Comparison study of ring current simulations with and without bubble injections

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dc.citation.firstpage374en_US
dc.citation.issueNumber1en_US
dc.citation.journalTitleJournal of Geophysical Research: Space Physicsen_US
dc.citation.lastpage379en_US
dc.citation.volumeNumber121en_US
dc.contributor.authorYang, Jianen_US
dc.contributor.authorToffoletto, Frank R.en_US
dc.contributor.authorWolf, Richard A.en_US
dc.date.accessioned2016-05-02T16:21:05Zen_US
dc.date.available2016-05-02T16:21:05Zen_US
dc.date.issued2016en_US
dc.description.abstractFor many years, stand-alone ring current models have been successfully producing storm time ring current enhancements without specifying explicit localized transient injections along their outer boundaries. However, both observations and simulations have suggested that the frequent burst flows or bubble injections can contribute substantially to the storm time ring current energy. In this paper, we investigate the difference in the spatial and temporal development of the ring current distribution with and without bubble injections using the Rice Convection Model-Equilibrium. The comparison study indicates that the simulation with bubble effects smoothed out along geosynchronous orbit can predict approximately the same large-scale ring current pressure distribution and electric potential pattern as the simulation with bubble effects included. Our results suggest that the increase of the hot plasma population along geosynchronous orbit can be envisaged as an integrated effect of bubble injections from the near-Earth plasma sheet. However, the observed fluctuations in the plasma population and electric field can only be captured when the mesoscale injections are included in the simulation. We also confirmed again that adiabatic convection of fully populated flux tubes cannot inject the ring current from the middle plasma sheet. The paper provides a justification for using stand-alone ring current models in the inner magnetosphere to simulate magnetic storms, without explicit consideration of bubbles and magnetic buoyancy effects inside geosynchronous orbit.en_US
dc.identifier.citationYang, Jian, Toffoletto, Frank R. and Wolf, Richard A.. "Comparison study of ring current simulations with and without bubble injections." <i>Journal of Geophysical Research: Space Physics,</i> 121, no. 1 (2016) Wiley: 374-379. http://dx.doi.org/10.1002/2015JA021901.en_US
dc.identifier.doihttp://dx.doi.org/10.1002/2015JA021901en_US
dc.identifier.urihttps://hdl.handle.net/1911/90384en_US
dc.language.isoengen_US
dc.publisherWileyen_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.subject.keywordbursty bulk flowsen_US
dc.subject.keywordbubble injectionsen_US
dc.subject.keywordentropyen_US
dc.titleComparison study of ring current simulations with and without bubble injectionsen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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