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dc.contributor.author Chau Chong Shing, Jorge Luis
dc.contributor.author Kudeki, E.
dc.date.accessioned 2018-07-16T17:00:26Z
dc.date.available 2018-07-16T17:00:26Z
dc.date.issued 2006-07
dc.identifier.issn 1432-0576
dc.identifier.uri http://repositorio.igp.gob.pe/handle/IGP/1894
dc.description En: Annales Geophysicae, v. 24, n.5, (July 2006), p. 1295–1303. es_ES
dc.description.abstract "We present here the first Jicamarca observations of incoherent scatter radar (ISR) spectra detected from E- and D-region altitudes. In the past such observations have not been possible at Jicamarca due a combined effect of strong equatorial electrojet (EEJ) clutter and hardware limitations in the receiving system. The observations presented here were made during weak EEJ conditions (i.e., almost zero zonal electric field) using an improved digital receiving system with a wide dynamic range and a high data throughput. <P style="line-height: 20px;"> The observed ISR spectra from E- and D-region altitudes are, as expected, narrow and get even narrower with decreasing altitude due to increasing ion-neutral collision frequencies. Therefore, it was possible to obtain accurate spectral measurements using a pulse-to-pulse data analysis. At lower altitudes in the D-region where signal correlation times are relatively long we used coherent integration to improve the signal-to-noise ratio of the collected data samples. The spectral estimates were fitted using a standard incoherent scatter (IS) spectral model between 87 and 120 km, and a Lorentzian function below 110 km. Our preliminary estimates of temperature and ion-neutral collisions frequencies above 87 km are in good agreement with the MSISE-90 model. Below 87 km, the measured spectral widths are larger than expected, causing an overestimation of the temperatures, most likely due to spectral distortions caused by atmospheric turbulence." es_ES
dc.format application/pdf es_ES
dc.language.iso eng es_ES
dc.publisher European Geosciences Union (EGU) es_ES
dc.rights info:eu-repo/semantics/openAccess es_ES
dc.rights.uri http://creativecommons.org/licences/by-nc-nd/2.5/pe/ es_ES
dc.source Repositorio institucional - IGP es_ES
dc.subject Radar--Perú--Mediciones es_ES
dc.subject Radar de dispersión incoherente es_ES
dc.subject Región E es_ES
dc.subject Región D es_ES
dc.subject Electrochorro ecuatorial es_ES
dc.subject Campos eléctricos es_ES
dc.subject Ionósfera--Investigación--Perú es_ES
dc.subject Procesamiento de señales es_ES
dc.subject Turbulencia es_ES
dc.title First E- and D- region incoherent scatter spectra observed over Jicamarca es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.subject.ocde Radar es_ES
dc.subject.ocde Perú es_ES
dc.subject.ocde Observación es_ES
dc.subject.ocde Atmósfera es_ES
dc.subject.ocde Procesamiento de datos es_ES
dc.subject.ocde Temperatura es_ES
dc.subject.ocde Ciencias espaciales es_ES
dc.subject.ocde Medición es_ES
dc.identifier.journal Annales Geophysicae es_ES
dc.description.peer-review Por pares es_ES
dc.identifier.doi 10.5194/angeo-24-1295-2006 es_ES

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