Observed diurnal and seasonal behavior of the micrometeor flux using the Arecibo and Jicamarca radars

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dc.contributor.authorJanches, D.
dc.contributor.authorChau Chong Shing, Jorge Luis
dc.date.accessioned2018-07-16T15:21:18Z
dc.date.available2018-07-16T15:21:18Z
dc.date.issued2005-09
dc.description.abstractIn this paper, we present results from meteor head-echo observations using the 430 MHz dual beam Arecibo radar in Puerto Rico and the 50 MHz Jicamarca radar in Peru. We show that the seasonal behavior reflected in the fast component of the micrometeor velocity distributions measured at Arecibo can be well explained by a micrometeor radiant distribution centered at the Earth’s apex as measured by Jicamarca Radio Observatory (JRO). We conclude that these radars, as probably every other high power and large aperture radar, detect this micrometeor population that show good agreement with the so-called South and North Apex sources reported by Jones and Brown [1993. Monthly Notices of the Royal Astronomical Society]. However, these radars do not seem to detect particles from any other source reported by those authors. We also showed that in order to explain the diurnal and seasonal behavior of the meteor rate detected at Arecibo, based on the results determined by the Jicamarca radar, a strong atmospheric filtering effect must exist. This effect is produced by the early and higher ablation of micrometeors, which enter the atmosphere a low elevation angles, probably reaching high temperature at higher altitudes and depositing some or all their material before they penetrate deep into the Mesosphere/Lower Thermosphere region. These results explain at some level the missing mass inconsistency raised by the comparison of meteor fluxes derived from satellite and traditional meteor radar observations. They also may be the source of the observed high altitude ions and metallic layers observed by radars and lidars, respectively.es_ES
dc.description.peer-reviewPor pareses_ES
dc.formatapplication/pdfes_ES
dc.identifier.citationJanches, D., & Chau, J. L. (2005). Observed diurnal and seasonal behavior of the micrometeor flux using the Arecibo and Jicamarca radars.==$Journal of Atmospheric and Solar-Terrestrial Physics, 67$==(13), 1196-1210. https://doi.org/10.1016/j.jastp.2005.06.011es_ES
dc.identifier.doihttps://doi.org/10.1016/j.jastp.2005.06.011es_ES
dc.identifier.govdocindex-oti2018
dc.identifier.journalJournal of Atmospheric and Solar-Terrestrial Physicses_ES
dc.identifier.urihttp://hdl.handle.net/20.500.12816/1882
dc.language.isoenges_ES
dc.publisherElsevieres_ES
dc.relation.ispartofurn:issn:1364-6826
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_ES
dc.subjectRadar meteores_ES
dc.subjectMeteor fluxes_ES
dc.subjectDustes_ES
dc.subjectMicrometeorses_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.01es_ES
dc.titleObserved diurnal and seasonal behavior of the micrometeor flux using the Arecibo and Jicamarca radarses_ES
dc.typeinfo:eu-repo/semantics/articlees_ES

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