Aspect sensitivity considerations in interpreting radar meteor range-spread trail echo durations

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dc.contributor.authorMalhotra, Akshay
dc.contributor.authorMathews, John D.
dc.contributor.authorUrbina, Julio
dc.date.accessioned2018-06-25T13:07:34Z
dc.date.available2018-06-25T13:07:34Z
dc.date.issued2007-12
dc.description.abstractInitial results from June 2006 50 MHz radar campaigns at the Jicamarca Radio Observatory (JRO) reveal that full understanding of Range-Spread Trail Echoes (RSTEs) must involve knowledge of the trail viewing angle relative to kB (radar pointing direction perpendicular to the geomagnetic field) as a function of location along the meteoroid trajectory. A study of RSTEs using the JRO main array demonstrates that an overwhelming majority of long duration ([15 s) trails occur in the kB region of the radar. Short duration (5 s) trails constitute a large majority of the trails and are seen throughout the illuminated volume although with a statistically significant kB preference indicating that observed trail duration is also a function of factors such as meteoroid mass and energy. Given the apparent radar scattering aspect sensitivity of the trail plasma as it expands parallel to the geomagnetic field, we hypothesize that short duration echoes away from the kB zone might be longer duration echoes if viewed from the correct geometry. We conclude that an RSTE event viewed by two closely spaced identical radars would exhibit different properties due to the differing viewing angles. Meteoroid size, energy, and fragmentation as well as radar properties such as frequency, beam pattern, and absolute sensitivity play obvious roles as well.es_ES
dc.description.peer-reviewPor pareses_ES
dc.formatapplication/pdfes_ES
dc.identifier.citationMalhotra, A., Mathews, J. D., & Urbina, J. (2007). Aspect sensitivity considerations in interpreting radar meteor range-spread trail echo durations.==$Earth, Moon, and Planets, 124$==(1). https://doi.org/10.1007/s11038-007-9211-1es_ES
dc.identifier.doihttps://doi.org/10.1007/s11038-007-9211-1es_ES
dc.identifier.journalEarth, Moon, and Planetses_ES
dc.identifier.urihttp://hdl.handle.net/20.500.12816/1505
dc.language.isoenges_ES
dc.publisherSpringeres_ES
dc.relation.ispartofurn:issn:0167-9295
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_ES
dc.subjectRadares_ES
dc.subjectRadar Meteores_ES
dc.subjectCopyright Issuees_ES
dc.subjectAspect Sensitivityes_ES
dc.subjectSensitivity Considerationes_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.01es_ES
dc.titleAspect sensitivity considerations in interpreting radar meteor range-spread trail echo durationses_ES
dc.typeinfo:eu-repo/semantics/articlees_ES

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