The zonal motion of equatorial plasma bubbles relative to the background ionosphere

dc.contributor.authorKil, Hyosub
dc.contributor.authorLee, Woo Kyoung
dc.contributor.authorKwak, Young-Sil
dc.contributor.authorZhang, Yongliang
dc.contributor.authorPaxton, Larry J.
dc.contributor.authorMilla, Marco
dc.date.accessioned2018-07-24T13:22:26Z
dc.date.available2018-07-24T13:22:26Z
dc.date.issued2014-07-09
dc.description.abstractThe zonal motions of plasmas inside equatorial plasma bubbles are different from those in the background ionosphere. The difference was explained in terms of the tilt of bubbles by recent studies, but observational evidence of this hypothesis has not yet been provided. We examine this hypothesis and, at the same time, look for an alternative explanation on the basis of the coincident satellite and radar observations over Jicamarca (11.95°S, 76.87°W) in Peru. In the observations at premidnight by the first Republic of China satellite (altitude: 600 km, inclination: 35°), plasmas inside bubbles drift westward relative to ambient plasmas. The same phenomenon is identified by radar observations. However, the relative westward plasma motions inside bubbles occur regardless of the tilt of bubbles, and therefore, the tilt is not the primary cause of the deviation of the plasma motions inside bubbles. The zonal plasma motions in the topside are characterized by systematic eastward drifts, whereas the zonal motions of plasmas in the bottomside backscatter layer show a mixture of eastward and westward drifts. The zonal plasma motions inside backscatter plumes resemble those in the bottomside backscatter layer. These observations indicate that plasmas inside bubbles maintain the properties of the zonal plasma motions in the bottomside where the bubbles originate. With this assumption, the deviation of the zonal motions of plasmas inside bubbles from those of ambient plasmas is understood in terms of the difference of the zonal plasma flows in the bottomside and topside.
dc.description.peer-reviewPor pares
dc.formatapplication/pdf
dc.identifier.citationKil, H., Lee, W. K., Kwak, Y.-S., Zhang, Y., Paxton, L. J., & Milla, M. (2014). The zonal motion of equatorial plasma bubbles relative to the background ionosphere.==$Journal of Geophysical Research: Space Physics, 119$==(7), 5943-5950. https://doi.org/10.1002/2014JA019963
dc.identifier.doihttps://doi.org/10.1002/2014JA019963
dc.identifier.govdocindex-oti2018
dc.identifier.journalJournal of Geophysical Research: Space Physics
dc.identifier.urihttp://hdl.handle.net/20.500.12816/2052
dc.language.isoeng
dc.publisherAmerican Geophysical Union
dc.relation.ispartofurn:issn:2169-9380
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subjectEquatorial ionosphere
dc.subjectPlasma bubble
dc.subjectZonal plasma motion
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.01
dc.titleThe zonal motion of equatorial plasma bubbles relative to the background ionosphere
dc.typeinfo:eu-repo/semantics/article

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