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Saturn’s quasiperiodic magnetohydrodynamic waves
dc.contributor.authorYates, J. N.
dc.contributor.authorSouthwood, D. J.
dc.contributor.authorDougherty, M. K.
dc.contributor.authorSulaiman, A. H.
dc.contributor.authorMasters, A.
dc.contributor.authorCowley, S. W. H.
dc.contributor.authorKivelson, M. G.
dc.contributor.authorChen, C. H. K.
dc.contributor.authorProvan, G.
dc.contributor.authorMitchell, D. G.
dc.contributor.authorHospodarsky, G. B.
dc.contributor.authorAchilleos, N.
dc.contributor.authorSorba, A. M.
dc.contributor.authorCoates, A. J.
dc.date.accessioned2017-01-06T20:49:44Z
dc.date.available2018-01-08T19:47:52Zen
dc.date.issued2016-11-16
dc.identifier.citationYates, J. N.; Southwood, D. J.; Dougherty, M. K.; Sulaiman, A. H.; Masters, A.; Cowley, S. W. H.; Kivelson, M. G.; Chen, C. H. K.; Provan, G.; Mitchell, D. G.; Hospodarsky, G. B.; Achilleos, N.; Sorba, A. M.; Coates, A. J. (2016). "Saturn’s quasiperiodic magnetohydrodynamic waves." Geophysical Research Letters 43(21): 11,102-11,111.
dc.identifier.issn0094-8276
dc.identifier.issn1944-8007
dc.identifier.urihttps://hdl.handle.net/2027.42/135035
dc.description.abstractQuasiperiodic ∼1 h fluctuations have been recently reported by numerous instruments on board the Cassini spacecraft. The interpretation of the sources of these fluctuations has remained elusive to date. Here we provide an explanation for the origin of these fluctuations using magnetometer observations. We find that magnetic field fluctuations at high northern latitudes are Alfvénic, with small amplitudes (∼0.4nT), and are concentrated in wave packets similar to those observed in Kleindienst et al. (2009). The wave packets recur periodically at the northern magnetic oscillation period. We use a magnetospheric box model to provide an interpretation of the wave periods. Our model results suggest that the observed magnetic fluctuations are second harmonic Alfvén waves standing between the northern and southern ionospheres in Saturn’s outer magnetosphere.Key PointsCassini observed quasiperiodic ∼60 min (QP60) fluctuations of Saturn’s magnetic fieldThese fluctuations are consistent with similar QP60 pulsations reported at SaturnWe propose that these fluctuations are standing second harmonic Alfvén waves
dc.publisherWiley
dc.subject.otherQP60
dc.subject.otherMHD waves
dc.subject.otherSaturn’s magnetosphere
dc.subject.otherperiodicity
dc.titleSaturn’s quasiperiodic magnetohydrodynamic waves
dc.typeArticleen_US
dc.rights.robotsIndexNoFollow
dc.subject.hlbsecondlevelGeological Sciences
dc.subject.hlbtoplevelScience
dc.description.peerreviewedPeer Reviewed
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/135035/1/grl55131_am.pdf
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/135035/2/grl55131-sup-0001-supinfo.pdf
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/135035/3/grl55131.pdf
dc.identifier.doi10.1002/2016GL071069
dc.identifier.sourceGeophysical Research Letters
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dc.owningcollnameInterdisciplinary and Peer-Reviewed


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