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dc.contributor.authorZhang, Shunrong
dc.contributor.authorErickson, Philip j.
dc.contributor.authorCoster, Anthea
dc.contributor.authorRideout, William
dc.contributor.authorVierinen, Juha
dc.contributor.authorJonah, Olusegun
dc.contributor.authorGoncharenko, Larisa
dc.date.accessioned2020-03-06T14:42:14Z
dc.date.available2020-03-06T14:42:14Z
dc.date.issued2019-12-25
dc.description.abstractThis study provides new scenarios for storm time traveling ionospheric disturbance excitation and subsequent propagation at subauroral and polar latitudes. We used ground‐based total electron content observations from Global Navigation Satellite System receivers combined with wide field, subauroral ionospheric plasma parameters measured with the Millstone Hill Incoherent Scatter Radar during strong September 2017 geospace storms. Observations provide the first evidence of significant influences on traveling ionospheric disturbance (TID) propagation and excitation caused by the presence of large subauroral polarization stream flow channels. Simultaneous large‐ and medium‐scale TIDs evolved during the event in a broad subauroral and midlatitude area near dusk. Similar concurrent TIDs occurred near dawn sectors as well during a period of sustained southward Bz. Medium‐scale TIDs at subauroral and midlatitudes had wave fronts aligned northwest‐southeast near dusk, and northeast‐southwest near dawn. These wave fronts were highly correlated with the direction of storm time large zonal plasma drift enhancements at these latitudes. At high latitudes, unexpected, predominant, and persistent storm time TIDs were identified with 2000+ km zonal wave fronts and 15% total electron content perturbation amplitudes, moving in transpolar propagation pathways from the dayside into the nightside. This propagation direction in the polar region was opposite to the normal assumption that TIDs originated in the nightside auroral region. Results suggest that significant dayside sources, such as cusp regions, can be efficient in generating transpolar TIDs during geospace storm intervals.en_US
dc.identifier.citationZhang, S., Erickson Pj, Coster, A, Rideout, W., Vierinen. J, Jonah O, Goncharenko, L. (2019) Subauroral and polar traveling ionospheric disturbances during 7-9 September 2017 storms. <i> Space Weather: The international journal of research and applications, 17</i>, (12), 1748-1764.en_US
dc.identifier.cristinIDFRIDAID 1764557
dc.identifier.doi10.1029/2019SW002325
dc.identifier.issn1542-7390
dc.identifier.urihttps://hdl.handle.net/10037/17656
dc.language.isoengen_US
dc.publisherAmerican Geophysical Union (AGU)en_US
dc.relation.journalSpace Weather: The international journal of research and applications
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2019 The Author(s)en_US
dc.subjectVDP::Technology: 500en_US
dc.subjectVDP::Teknologi: 500en_US
dc.titleSubauroral and polar traveling ionospheric disturbances during 7-9 September 2017 stormsen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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