Onset conditions for equatorial spread F determined during EQUIS II

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dc.contributor.authorHysell, D. L.
dc.contributor.authorLarsen, M. F.
dc.contributor.authorSwenson, C. M.
dc.contributor.authorBarjatya, A.
dc.contributor.authorWheeler, T. F.
dc.contributor.authorSarango, M. F.
dc.contributor.authorWoodman Pollitt, Ronald Francisco
dc.contributor.authorChau Chong Shing, Jorge Luis
dc.date.accessioned2018-06-26T14:24:50Z
dc.date.available2018-06-26T14:24:50Z
dc.date.issued2005-12-22
dc.description.abstractAn investigation into the dynamics and layer structure of the postsunset ionosphere prior to the onset of equatorial spread F (ESF) took place during the NASA EQUIS II campaign on Kwajalein Atoll on August 7 and 15, 2004. On both nights, an instrumented rocket measured plasma number density and vector electric fields to an apogee of about 450 km. Two chemical release rockets were launched both nights to measure lower thermospheric wind profiles. The Altair UHF/VHF radar was used to monitor coherent and incoherent scatter. In both experiments, strong plasma shear flow was detected. Periodic, patchy bottom-type scattering layers were observed in the westward-drifting plasma below the shear nodes. The large-scale plasma depletions that formed later during ESF reproduced the periodic structure of the original, precursor layers. The layers were therefore predictive of the ESF that followed. We surmise that collisional shear instabilities may have given rise to large-scale plasma waves that were highlighted by the bottom- type layer structure and that preconditioned the postsunset ionosphere for ESF.es_ES
dc.description.peer-reviewPor pareses_ES
dc.formatapplication/pdfes_ES
dc.identifier.citationHysell, D. L., Larsen, M. F., Swenson, C. M., Barjatya, A., Wheeler, T. F., Sarango, M. F., ... Chau, J. L. (2005). Onset conditions for equatorial spread F determined during EQUIS II.==$Geophysical Research Letters, 32$==(24), L24104. https://doi.org/10.1029/2005GL024743es_ES
dc.identifier.doihttps://doi.org/10.1029/2005GL024743es_ES
dc.identifier.govdocindex-oti2018
dc.identifier.journalGeophysical Research Letterses_ES
dc.identifier.urihttp://hdl.handle.net/20.500.12816/1540
dc.language.isoenges_ES
dc.publisherAmerican Geophysical Uniones_ES
dc.relation.ispartofurn:issn:0094-8276
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_ES
dc.subjectIonospherees_ES
dc.subjectElectric fieldses_ES
dc.subjectThermospheric windses_ES
dc.subjectPlasma waveses_ES
dc.subjectIncoherent scattering radares_ES
dc.subjectIonospherees_ES
dc.subjectSpace plasmases_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.01es_ES
dc.titleOnset conditions for equatorial spread F determined during EQUIS IIes_ES
dc.typeinfo:eu-repo/semantics/articlees_ES

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