Interferometric and dual beam observations of daytime spread-F-like irregularities over Jicamarca

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dc.contributor.authorChau Chong Shing, Jorge Luis
dc.contributor.authorWoodman Pollitt, Ronald Francisco
dc.coverage.spatialJicamarca
dc.date.accessioned2016-10-25T15:37:55Z
dc.date.accessioned2017-12-21T19:41:40Z
dc.date.available2016-10-25T15:37:55Z
dc.date.available2017-12-21T19:41:40Z
dc.date.issued2001
dc.description.abstractWe report new observations made on April 11 2000 over Jicamarca of daytime spread-F-like irregularities. These irregularities are extremely rare (this was the fourth observation in the history of Jicamarca) and were first reported by Woodman et al. [1985]. The main features of these new observations, which are similar to the previous ones, are that they were: (1) two orders of magnitude stronger than the incoherent scatter echoes at the F peak, (2) observed between 1400 and 1600 LT; (3) characterized by small Doppler shifts (vd < 1 m s-1); and (4) characterized by long correlation times, i.e., narrow spectral widths. The latter is interpreted as evidence that these irregularities are field aligned (very aspect sensitive in the north-south direction). On this occasion the irregularities occurred at higher altitudes than before, between 950 and 1450 km compared to 600-1000 km. The echoes in these recent observations were quite localized in the east-west direction (they were much stronger in the west beam than in the east beam). Furthermore, using interferometry we determined that the echoes were aspect sensitive in the east-west (as well as north-south) direction with aspect angle widths as small as 0.2 degrees, particularly when the echoes were strong.es_ES
dc.description.sponsorshipROJes_ES
dc.formatapplication/pdfes_ES
dc.identifier.citationChau, J. L., & Woodman, R. F. (2001). Interferometric and dual beam observations of daytime spread-F-like irregularities over Jicamarca.==$Geophysical Research Letters, 28$==(18), 3581-3584. https://doi.org/10.1029/2001GL013404es_ES
dc.identifier.doihttps://doi.org/10.1029/2001GL013404es_ES
dc.identifier.govdocindex-oti2018
dc.identifier.journalGeophysical Research Letterses_ES
dc.identifier.urihttp://hdl.handle.net/20.500.12816/515
dc.language.isoenges_ES
dc.publisherAmerican Geophysical Uniones_ES
dc.relation.ispartofurn:issn:0094-8276
dc.rightsinfo:eu-repo/semantics/openAccesses_ES
dc.rights.urihttps://creativecommons.org/licences/by/4.0/es_ES
dc.subjectInterferometryes_ES
dc.subjectF Regiones_ES
dc.subjectPlasmaes_ES
dc.subjectRegion Ees_ES
dc.subjectJicamarca Radio Observatoryes_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.01es_ES
dc.titleInterferometric and dual beam observations of daytime spread-F-like irregularities over Jicamarcaes_ES
dc.typeinfo:eu-repo/semantics/preprintes_ES

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