Surface waves on Saturn's dawn flank magnetopause driven by the Kelvin-Helmholtz instability

Autores
Masters, A.; Achilleos, N.; Bertucci, Cesar; Dougherty, M. K.; Kanani, S. J.; Arridge, C. S.; McAndrews, H. J.; Coates, A. J.
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Crossings of Saturn's magnetopause made by the Cassini spacecraft on 12, 13 and 17 March 2006 are analysed. During this period Cassini's trajectory was approximately parallel to the magnetopause boundary given by a model of the surface. Magnetic field and electron data are used to identify excursions into the magnetosheath bounded by crossings of the magnetopause current layer. Minimum variance analysis of the magnetic field vector measurements is used to determine the normal to the boundary for each crossing. The normals corresponding to the crossings oscillate about an average orientation that is consistent with the unperturbed normal predicted by the surface model. This reveals the presence of regular boundary waves with a direction of propagation found to be within 24° of Saturn's rotational equator. Two categories of boundary wave are identified: the first with a period of the order of hours, and the second with a period of 45±9 min. Based on the propagation direction and a comparison of magnetospheric and magnetosheath magnetic fields, we conclude that both types of wave were driven by the Kelvin–Helmholtz instability. The observed boundary perturbations are consistent with a superposition of different types of surface wave activity.
Fil: Masters, A.. Imperial College London; Reino Unido
Fil: Achilleos, N.. University College London; Estados Unidos
Fil: Bertucci, Cesar. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Dougherty, M. K.. Imperial College London; Reino Unido
Fil: Kanani, S. J.. University College London; Estados Unidos
Fil: Arridge, C. S.. University College London; Estados Unidos
Fil: McAndrews, H. J.. Los Alamos National Laboratory; Estados Unidos
Fil: Coates, A. J.. University College London; Estados Unidos
Materia
Saturn
Magnetosphere
Magnetopause
Kelvinhelmholtz Instability
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/20683
Acceder
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network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Surface waves on Saturn's dawn flank magnetopause driven by the Kelvin-Helmholtz instabilityMasters, A.Achilleos, N.Bertucci, CesarDougherty, M. K.Kanani, S. J.Arridge, C. S.McAndrews, H. J.Coates, A. J.SaturnMagnetosphereMagnetopauseKelvinhelmholtz Instabilityhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Crossings of Saturn's magnetopause made by the Cassini spacecraft on 12, 13 and 17 March 2006 are analysed. During this period Cassini's trajectory was approximately parallel to the magnetopause boundary given by a model of the surface. Magnetic field and electron data are used to identify excursions into the magnetosheath bounded by crossings of the magnetopause current layer. Minimum variance analysis of the magnetic field vector measurements is used to determine the normal to the boundary for each crossing. The normals corresponding to the crossings oscillate about an average orientation that is consistent with the unperturbed normal predicted by the surface model. This reveals the presence of regular boundary waves with a direction of propagation found to be within 24° of Saturn's rotational equator. Two categories of boundary wave are identified: the first with a period of the order of hours, and the second with a period of 45±9 min. Based on the propagation direction and a comparison of magnetospheric and magnetosheath magnetic fields, we conclude that both types of wave were driven by the Kelvin–Helmholtz instability. The observed boundary perturbations are consistent with a superposition of different types of surface wave activity.Fil: Masters, A.. Imperial College London; Reino UnidoFil: Achilleos, N.. University College London; Estados UnidosFil: Bertucci, Cesar. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; ArgentinaFil: Dougherty, M. K.. Imperial College London; Reino UnidoFil: Kanani, S. J.. University College London; Estados UnidosFil: Arridge, C. S.. University College London; Estados UnidosFil: McAndrews, H. J.. Los Alamos National Laboratory; Estados UnidosFil: Coates, A. J.. University College London; Estados UnidosElsevier2009-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/20683Masters, A.; Achilleos, N.; Bertucci, Cesar; Dougherty, M. K.; Kanani, S. J.; et al.; Surface waves on Saturn's dawn flank magnetopause driven by the Kelvin-Helmholtz instability; Elsevier; Planetary and Space Science; 57; 14-15; 12-2009; 1769-17780032-0633CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0032063309000701info:eu-repo/semantics/altIdentifier/doi/10.1016/j.pss.2009.02.010info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-17T11:41:37Zoai:ri.conicet.gov.ar:11336/20683instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-17 11:41:37.424CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Surface waves on Saturn's dawn flank magnetopause driven by the Kelvin-Helmholtz instability
title Surface waves on Saturn's dawn flank magnetopause driven by the Kelvin-Helmholtz instability
spellingShingle Surface waves on Saturn's dawn flank magnetopause driven by the Kelvin-Helmholtz instability
Masters, A.
Saturn
Magnetosphere
Magnetopause
Kelvinhelmholtz Instability
title_short Surface waves on Saturn's dawn flank magnetopause driven by the Kelvin-Helmholtz instability
title_full Surface waves on Saturn's dawn flank magnetopause driven by the Kelvin-Helmholtz instability
title_fullStr Surface waves on Saturn's dawn flank magnetopause driven by the Kelvin-Helmholtz instability
title_full_unstemmed Surface waves on Saturn's dawn flank magnetopause driven by the Kelvin-Helmholtz instability
title_sort Surface waves on Saturn's dawn flank magnetopause driven by the Kelvin-Helmholtz instability
dc.creator.none.fl_str_mv Masters, A.
Achilleos, N.
Bertucci, Cesar
Dougherty, M. K.
Kanani, S. J.
Arridge, C. S.
McAndrews, H. J.
Coates, A. J.
author Masters, A.
author_facet Masters, A.
Achilleos, N.
Bertucci, Cesar
Dougherty, M. K.
Kanani, S. J.
Arridge, C. S.
McAndrews, H. J.
Coates, A. J.
author_role author
author2 Achilleos, N.
Bertucci, Cesar
Dougherty, M. K.
Kanani, S. J.
Arridge, C. S.
McAndrews, H. J.
Coates, A. J.
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Saturn
Magnetosphere
Magnetopause
Kelvinhelmholtz Instability
topic Saturn
Magnetosphere
Magnetopause
Kelvinhelmholtz Instability
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Crossings of Saturn's magnetopause made by the Cassini spacecraft on 12, 13 and 17 March 2006 are analysed. During this period Cassini's trajectory was approximately parallel to the magnetopause boundary given by a model of the surface. Magnetic field and electron data are used to identify excursions into the magnetosheath bounded by crossings of the magnetopause current layer. Minimum variance analysis of the magnetic field vector measurements is used to determine the normal to the boundary for each crossing. The normals corresponding to the crossings oscillate about an average orientation that is consistent with the unperturbed normal predicted by the surface model. This reveals the presence of regular boundary waves with a direction of propagation found to be within 24° of Saturn's rotational equator. Two categories of boundary wave are identified: the first with a period of the order of hours, and the second with a period of 45±9 min. Based on the propagation direction and a comparison of magnetospheric and magnetosheath magnetic fields, we conclude that both types of wave were driven by the Kelvin–Helmholtz instability. The observed boundary perturbations are consistent with a superposition of different types of surface wave activity.
Fil: Masters, A.. Imperial College London; Reino Unido
Fil: Achilleos, N.. University College London; Estados Unidos
Fil: Bertucci, Cesar. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Dougherty, M. K.. Imperial College London; Reino Unido
Fil: Kanani, S. J.. University College London; Estados Unidos
Fil: Arridge, C. S.. University College London; Estados Unidos
Fil: McAndrews, H. J.. Los Alamos National Laboratory; Estados Unidos
Fil: Coates, A. J.. University College London; Estados Unidos
description Crossings of Saturn's magnetopause made by the Cassini spacecraft on 12, 13 and 17 March 2006 are analysed. During this period Cassini's trajectory was approximately parallel to the magnetopause boundary given by a model of the surface. Magnetic field and electron data are used to identify excursions into the magnetosheath bounded by crossings of the magnetopause current layer. Minimum variance analysis of the magnetic field vector measurements is used to determine the normal to the boundary for each crossing. The normals corresponding to the crossings oscillate about an average orientation that is consistent with the unperturbed normal predicted by the surface model. This reveals the presence of regular boundary waves with a direction of propagation found to be within 24° of Saturn's rotational equator. Two categories of boundary wave are identified: the first with a period of the order of hours, and the second with a period of 45±9 min. Based on the propagation direction and a comparison of magnetospheric and magnetosheath magnetic fields, we conclude that both types of wave were driven by the Kelvin–Helmholtz instability. The observed boundary perturbations are consistent with a superposition of different types of surface wave activity.
publishDate 2009
dc.date.none.fl_str_mv 2009-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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://hdl.handle.net/11336/20683
Masters, A.; Achilleos, N.; Bertucci, Cesar; Dougherty, M. K.; Kanani, S. J.; et al.; Surface waves on Saturn's dawn flank magnetopause driven by the Kelvin-Helmholtz instability; Elsevier; Planetary and Space Science; 57; 14-15; 12-2009; 1769-1778
0032-0633
CONICET Digital
CONICET
url http://hdl.handle.net/11336/20683
identifier_str_mv Masters, A.; Achilleos, N.; Bertucci, Cesar; Dougherty, M. K.; Kanani, S. J.; et al.; Surface waves on Saturn's dawn flank magnetopause driven by the Kelvin-Helmholtz instability; Elsevier; Planetary and Space Science; 57; 14-15; 12-2009; 1769-1778
0032-0633
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0032063309000701
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.pss.2009.02.010
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.001348

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