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dc.contributor.author
Masters, A.
dc.contributor.author
Achilleos, N.
dc.contributor.author
Bertucci, Cesar
dc.contributor.author
Dougherty, M. K.
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Kanani, S. J.
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Arridge, C. S.
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McAndrews, H. J.
dc.contributor.author
Coates, A. J.
dc.date.available
2017-07-17T16:02:02Z
dc.date.issued
2009-12
dc.identifier.citation
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
dc.identifier.issn
0032-0633
dc.identifier.uri
http://hdl.handle.net/11336/20683
dc.description.abstract
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.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
Saturn
dc.subject
Magnetosphere
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Magnetopause
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Kelvinhelmholtz Instability
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Astronomía
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Surface waves on Saturn's dawn flank magnetopause driven by the Kelvin-Helmholtz instability
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-07-17T13:33:43Z
dc.journal.volume
57
dc.journal.number
14-15
dc.journal.pagination
1769-1778
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: Masters, A.. Imperial College London; Reino Unido
dc.description.fil
Fil: Achilleos, N.. University College London; Estados Unidos
dc.description.fil
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
dc.description.fil
Fil: Dougherty, M. K.. Imperial College London; Reino Unido
dc.description.fil
Fil: Kanani, S. J.. University College London; Estados Unidos
dc.description.fil
Fil: Arridge, C. S.. University College London; Estados Unidos
dc.description.fil
Fil: McAndrews, H. J.. Los Alamos National Laboratory; Estados Unidos
dc.description.fil
Fil: Coates, A. J.. University College London; Estados Unidos
dc.journal.title
Planetary and Space Science
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0032063309000701
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.pss.2009.02.010
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