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dc.contributor.author Carrano, Charles S.
dc.contributor.author Valladares, Cesar E.
dc.contributor.author Groves, Keith M.
dc.date.accessioned 2018-11-08T16:44:08Z
dc.date.available 2018-11-08T16:44:08Z
dc.date.issued 2012-03-05
dc.identifier.citation Carrano, C. S., Valladares, C. E., & Groves, K. M. (2012). Latitudinal and Local Time Variation of Ionospheric Turbulence Parameters during the Conjugate Point Equatorial Experiment in Brazil.==$International Journal of Geophysics, 2012,$==103963. https://doi.org/10.1155/2012/103963 es_ES
dc.identifier.uri http://hdl.handle.net/20.500.12816/3450
dc.description.abstract Previous authors have reported on the morphology of GPS scintillations and irregularity zonal drift during the 2002 Conjugate Point Equatorial Experiment (COPEX) in Brazil. In this paper, we characterize the turbulent ionospheric medium that produced these scintillations. Using 10 Hz GPS carrier-to-noise measurements at Boa Vista (2.9°N, 60.7°W), Alta Floresta (9.9°S, 56.1°W), and Campo Grande (20.5°S, 54.7°W), we report on the variation of turbulent intensity, phase spectral index, and irregularity zonal drift as a function of latitude and local time for the evening of 1-2 November 2002. The method of analysis is new and, unlike analytical theories of scintillation based on the Born or Rytov approximations, it is valid when the scintillation index saturates due to multiple-scatter effects. Our principal findings are that (1) the strength of turbulence tended to be largest near the crests of the equatorial anomaly and at early postsunset local times, (2) the turbulent intensity was generally stronger and lasted two hours longer at Campo Grande than at Boa Vista, (3) the phase spectral index was similar at the three stations but increased from 2.5 to 4.5 with local time, and (4) our estimates of zonal irregularity drift are consistent with those provided by the spaced-receiver technique. es_ES
dc.format application/pdf es_ES
dc.language.iso eng es_ES
dc.publisher Hindawi es_ES
dc.relation.ispartof urn:issn:1687-885X
dc.rights info:eu-repo/semantics/restrictedAccess es_ES
dc.subject Ionosphere es_ES
dc.subject Atmospheric turbulence es_ES
dc.subject Flicker es_ES
dc.subject Global positioning system es_ES
dc.subject Artificial satellites es_ES
dc.title Latitudinal and Local Time Variation of Ionospheric Turbulence Parameters during the Conjugate Point Equatorial Experiment in Brazil 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 International Journal of Geophysics es_ES
dc.description.peer-review Por pares es_ES
dc.identifier.doi https://doi.org/10.1155/2012/103963 es_ES

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