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dc.contributor.authorFoullon, Claire
dc.contributor.authorFarrugia, Charles J.
dc.contributor.authorFazakerley, Andrew
dc.contributor.authorOwen, Christopher J.
dc.contributor.authorGratton, F.T.
dc.contributor.authorTorbert, R.B.
dc.date.accessioned2013-08-22T12:59:27Z
dc.date.issued2010
dc.description.abstractObservations of surface waves on the magnetopause indicate a wide range of phase velocities and wavelengths. Their multispacecraft analysis allows a more precise determination of wave characteristics than ever before and reveal shortcomings of approximations to the phase speed that take a predetermined fraction of the magnetosheath speed or the average flow velocity in the boundary layer. We show that time lags between two or more spacecraft can give a qualitative upper estimate, and we confirm the unreliability of flow approximations often used by analyzing a few cases. Using two-point distant magnetic field observations and spectral analysis of the tailward magnetic field component, we propose an alternative method to estimate the wavelength and phase speed at a single spacecraft from a statistical fit to the data at the other site.en_GB
dc.identifier.citationVol. 115 (A9), article A09203en_GB
dc.identifier.doi10.1029/2009JA015189
dc.identifier.urihttp://hdl.handle.net/10871/12881
dc.language.isoenen_GB
dc.publisherAmerican Geophysical Union (AGU)en_GB
dc.relation.urlhttp://dx.doi.org/10.1029/2009JA015189en_GB
dc.subjectKelvin-Helmholtzen_GB
dc.subjectmagnetopauseen_GB
dc.subjectboundary layeren_GB
dc.titleOn the multispacecraft determination of periodic surface wave phase speeds and wavelengthsen_GB
dc.typeArticleen_GB
dc.date.available2013-08-22T12:59:27Z
dc.descriptionCopyright © 2010 American Geophysical Union (AGU)en_GB
dc.identifier.eissn2169-9402
dc.identifier.journalJournal of Geophysical Research: Space Physicsen_GB


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