Proper orthogonal and dynamic mode decomposition of sunspot data

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dc.contributor.authorAlbidah, A. B.
dc.contributor.authorBrevis, W.
dc.contributor.authorFedun, V.
dc.contributor.authorBallai, I.
dc.contributor.authorJess, D. B.
dc.contributor.authorStangalini, M.
dc.contributor.authorHigham, J.
dc.contributor.authorVerth, G.
dc.date.accessioned2025-01-20T23:54:44Z
dc.date.available2025-01-20T23:54:44Z
dc.date.issued2021
dc.description.abstractHigh-resolution solar observations show the complex structure of the magnetohydrodynamic (MHD) wave motion. We apply the techniques of proper orthogonal decomposition (POD) and dynamic mode decomposition (DMD) to identify the dominant MHD wave modes in a sunspot using the intensity time series. The POD technique was used to find modes that are spatially orthogonal, whereas the DMD technique identifies temporal orthogonality. Here, we show that the combined POD and DMD approaches can successfully identify both sausage and kink modes in a sunspot umbra with an approximately circular cross-sectional shape. This article is part of the Theo Murphy meeting issue 'High-resolution wave dynamics in the lower solar atmosphere'.
dc.fuente.origenWOS
dc.identifier.doi10.1098/rsta.2020.0181
dc.identifier.eissn1471-2962
dc.identifier.issn1364-503X
dc.identifier.urihttps://doi.org/10.1098/rsta.2020.0181
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/95046
dc.identifier.wosidWOS:000601321200011
dc.issue.numero2190
dc.language.isoen
dc.revistaPhilosophical transactions of the royal society a-mathematical physical and engineering sciences
dc.rightsacceso restringido
dc.subjectmagnetohydrodynamic
dc.subjectproper orthogonal decomposition
dc.subjectdynamic mode decomposition
dc.subjectsunspots
dc.subjectwaves
dc.subject.ods13 Climate Action
dc.subject.odspa13 Acción por el clima
dc.titleProper orthogonal and dynamic mode decomposition of sunspot data
dc.typeartículo
dc.volumen379
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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