Simultaneous optical and radar observations of meteor head-echoes utilizing SAAMER

Autores
Michell, R. G.; Janches, D.; Samara, M.; Hormaechea, José Luis; Brunini, Claudio Antonio; Bibbó, Isabel
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present simultaneous optical and radar observations of meteors observed with the Southern Argentine Agile MEteor Radar (SAAMER). Although such observations were performed in the past using High Power and Large Aperture radars, the focus here is on meteors that produced head echoes that can be detected by a significantly less sensitive but more accessible radar system. An observational campaign was conducted in August of 2011, where an optical imager was operated near the radar site in Rio Grande, Tierra del Fuego, Argentina. Six head echo events out of 150 total detections were identified where simultaneous optical meteors could also be clearly seen within the main radar beam. The location of the meteors derived from the radar interferometry agreed very well with the optical location, verifying the accuracy of the radar interferometry technique. The meteor speeds and origin directions calculated from the radar data were accurate—compared with the optics—for the 2 meteors that had radar signal-to-noise ratios above 2.5. The optical meteors that produced the head echoes had horizontal velocities in the range of 29–91 km/s. These comparisons with optical observations improve the accuracy of the radar detection and analysis techniques, such that, when applied over longer periods of time, will improve the statistics of southern hemisphere meteor observations. Mass estimates were derived using both the optical and radar data and the resulting masses agreed well with each other. All were within an order of magnitude and in most cases, the agreement was within a factor of two.
Facultad de Ciencias Astronómicas y Geofísicas
Materia
Astronomía
Meteor
Optical
Head echo
Metero mass
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/101153

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spelling Simultaneous optical and radar observations of meteor head-echoes utilizing SAAMERMichell, R. G.Janches, D.Samara, M.Hormaechea, José LuisBrunini, Claudio AntonioBibbó, IsabelAstronomíaMeteorOpticalHead echoMetero massWe present simultaneous optical and radar observations of meteors observed with the Southern Argentine Agile MEteor Radar (SAAMER). Although such observations were performed in the past using High Power and Large Aperture radars, the focus here is on meteors that produced head echoes that can be detected by a significantly less sensitive but more accessible radar system. An observational campaign was conducted in August of 2011, where an optical imager was operated near the radar site in Rio Grande, Tierra del Fuego, Argentina. Six head echo events out of 150 total detections were identified where simultaneous optical meteors could also be clearly seen within the main radar beam. The location of the meteors derived from the radar interferometry agreed very well with the optical location, verifying the accuracy of the radar interferometry technique. The meteor speeds and origin directions calculated from the radar data were accurate—compared with the optics—for the 2 meteors that had radar signal-to-noise ratios above 2.5. The optical meteors that produced the head echoes had horizontal velocities in the range of 29–91 km/s. These comparisons with optical observations improve the accuracy of the radar detection and analysis techniques, such that, when applied over longer periods of time, will improve the statistics of southern hemisphere meteor observations. Mass estimates were derived using both the optical and radar data and the resulting masses agreed well with each other. All were within an order of magnitude and in most cases, the agreement was within a factor of two.Facultad de Ciencias Astronómicas y Geofísicas2015-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf95-101http://sedici.unlp.edu.ar/handle/10915/101153enginfo:eu-repo/semantics/altIdentifier/url/https://ri.conicet.gov.ar/11336/12778info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0032063315001336info:eu-repo/semantics/altIdentifier/issn/0032-0633info:eu-repo/semantics/altIdentifier/doi/10.1016/j.pss.2015.04.018info:eu-repo/semantics/altIdentifier/hdl/11336/12778info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:20:56Zoai:sedici.unlp.edu.ar:10915/101153Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:20:56.575SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Simultaneous optical and radar observations of meteor head-echoes utilizing SAAMER
title Simultaneous optical and radar observations of meteor head-echoes utilizing SAAMER
spellingShingle Simultaneous optical and radar observations of meteor head-echoes utilizing SAAMER
Michell, R. G.
Astronomía
Meteor
Optical
Head echo
Metero mass
title_short Simultaneous optical and radar observations of meteor head-echoes utilizing SAAMER
title_full Simultaneous optical and radar observations of meteor head-echoes utilizing SAAMER
title_fullStr Simultaneous optical and radar observations of meteor head-echoes utilizing SAAMER
title_full_unstemmed Simultaneous optical and radar observations of meteor head-echoes utilizing SAAMER
title_sort Simultaneous optical and radar observations of meteor head-echoes utilizing SAAMER
dc.creator.none.fl_str_mv Michell, R. G.
Janches, D.
Samara, M.
Hormaechea, José Luis
Brunini, Claudio Antonio
Bibbó, Isabel
author Michell, R. G.
author_facet Michell, R. G.
Janches, D.
Samara, M.
Hormaechea, José Luis
Brunini, Claudio Antonio
Bibbó, Isabel
author_role author
author2 Janches, D.
Samara, M.
Hormaechea, José Luis
Brunini, Claudio Antonio
Bibbó, Isabel
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Astronomía
Meteor
Optical
Head echo
Metero mass
topic Astronomía
Meteor
Optical
Head echo
Metero mass
dc.description.none.fl_txt_mv We present simultaneous optical and radar observations of meteors observed with the Southern Argentine Agile MEteor Radar (SAAMER). Although such observations were performed in the past using High Power and Large Aperture radars, the focus here is on meteors that produced head echoes that can be detected by a significantly less sensitive but more accessible radar system. An observational campaign was conducted in August of 2011, where an optical imager was operated near the radar site in Rio Grande, Tierra del Fuego, Argentina. Six head echo events out of 150 total detections were identified where simultaneous optical meteors could also be clearly seen within the main radar beam. The location of the meteors derived from the radar interferometry agreed very well with the optical location, verifying the accuracy of the radar interferometry technique. The meteor speeds and origin directions calculated from the radar data were accurate—compared with the optics—for the 2 meteors that had radar signal-to-noise ratios above 2.5. The optical meteors that produced the head echoes had horizontal velocities in the range of 29–91 km/s. These comparisons with optical observations improve the accuracy of the radar detection and analysis techniques, such that, when applied over longer periods of time, will improve the statistics of southern hemisphere meteor observations. Mass estimates were derived using both the optical and radar data and the resulting masses agreed well with each other. All were within an order of magnitude and in most cases, the agreement was within a factor of two.
Facultad de Ciencias Astronómicas y Geofísicas
description We present simultaneous optical and radar observations of meteors observed with the Southern Argentine Agile MEteor Radar (SAAMER). Although such observations were performed in the past using High Power and Large Aperture radars, the focus here is on meteors that produced head echoes that can be detected by a significantly less sensitive but more accessible radar system. An observational campaign was conducted in August of 2011, where an optical imager was operated near the radar site in Rio Grande, Tierra del Fuego, Argentina. Six head echo events out of 150 total detections were identified where simultaneous optical meteors could also be clearly seen within the main radar beam. The location of the meteors derived from the radar interferometry agreed very well with the optical location, verifying the accuracy of the radar interferometry technique. The meteor speeds and origin directions calculated from the radar data were accurate—compared with the optics—for the 2 meteors that had radar signal-to-noise ratios above 2.5. The optical meteors that produced the head echoes had horizontal velocities in the range of 29–91 km/s. These comparisons with optical observations improve the accuracy of the radar detection and analysis techniques, such that, when applied over longer periods of time, will improve the statistics of southern hemisphere meteor observations. Mass estimates were derived using both the optical and radar data and the resulting masses agreed well with each other. All were within an order of magnitude and in most cases, the agreement was within a factor of two.
publishDate 2015
dc.date.none.fl_str_mv 2015-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/101153
url http://sedici.unlp.edu.ar/handle/10915/101153
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://ri.conicet.gov.ar/11336/12778
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0032063315001336
info:eu-repo/semantics/altIdentifier/issn/0032-0633
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.pss.2015.04.018
info:eu-repo/semantics/altIdentifier/hdl/11336/12778
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
95-101
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repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
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