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dc.contributor.author Vlasov, M. N.
dc.contributor.author Kelley, M. C.
dc.contributor.author Hysell, D. L.
dc.date.accessioned 2018-10-30T10:43:45Z
dc.date.available 2018-10-30T10:43:45Z
dc.date.issued 2007-03-08
dc.identifier.citation Vlasov, M. N., Kelley, M. C., & Hysell, D. L. (2007). Eddy turbulence parameters inferred from radar observations at Jicamarca.==$Annales Geophysicae, 25$==(2), 475-481. https://doi.org/10.5194/angeo-25-475-2007 es_ES
dc.identifier.uri http://hdl.handle.net/20.500.12816/3212
dc.description.abstract Significant electron density striations, neutral temperatures 27 K above nominal, and intense wind shear were observed in the E-region ionosphere over the Jicamarca Radio Observatory during an unusual event on 26 July 2005 (Hysell et al., 2007). In this paper, these results are used to estimate eddy turbulence parameters and their effects. Models for the thermal balance in the mesosphere/lower thermosphere and the charged particle density in the E region are developed here. The thermal balance model includes eddy conduction and viscous dissipation of turbulent energy as well as cooling by infrared radiation. The production and recombination of ions and electrons in the E region, together with the production and transport of nitric oxide, are included in the plasma density model. Good agreement between the model results and the experimental data is obtained for an eddy diffusion coefficient of about 1×103 m2/s at its peak, which occurs at an altitude of 107 km. This eddy turbulence results in a local maximum of the temperature in the upper mesosphere/lower thermosphere and could correspond either to an unusually high mesopause or to a double mesosphere. Although complicated by plasma dynamic effects and ongoing controversy, our interpretation of Farley-Buneman wave phase velocity (Hysell et al., 2007) is consistent with a low Brunt-Väisälä frequency in the region of interest. Nitric oxide transport due to eddy diffusion from the lower thermosphere to the mesosphere causes electron density changes in the E region whereas NO density modulation due to irregularities in the eddy diffusion coefficient creates variability in the electron density. es_ES
dc.format application/pdf es_ES
dc.language.iso eng es_ES
dc.publisher European Geosciences Union (EGU) es_ES
dc.relation.ispartof urn:issn:0992-7689
dc.rights info:eu-repo/semantics/restrictedAccess es_ES
dc.subject Ionosphere es_ES
dc.subject Equatorial ionosphere es_ES
dc.subject Midlatitude ionosphere es_ES
dc.subject Plasma waves and instabilities es_ES
dc.title Eddy turbulence parameters inferred from radar observations at Jicamarca es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.subject.ocde http://purl.org/pe-repo/ocde/ford#1.05.01 es_ES
dc.identifier.journal Annales Geophysicae es_ES
dc.description.peer-review Por pares es_ES
dc.identifier.doi https://doi.org/10.5194/angeo-25-475-2007 es_ES

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