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dc.contributor.authorAlbert, Carlo-
dc.contributor.authorGaia, Filippo-
dc.contributor.authorUlzega, Simone-
dc.date.accessioned2020-09-17T12:55:19Z-
dc.date.available2020-09-17T12:55:19Z-
dc.date.issued2020-05-
dc.identifier.urihttps://presentations.copernicus.org/EGU2020/EGU2020-15185_presentation.pdfde_CH
dc.identifier.urihttps://digitalcollection.zhaw.ch/handle/11475/20502-
dc.descriptionOral presentationde_CH
dc.description.abstractProxies of solar activity have revealed repeated Grand Minima that occur with a certain regularity associated with the well-known Gleissberg and Süss/deVries cycles. These and other prominent cycles in the spectrum of solar activity are also seen in the spectrum of the planetary torque exerted on the solar tachocline, which has revived the hypothesis of a planetary influence on solar activity. It is not clear, however, how the extremely weak planetary forcing could influence the solar magnetic activity. Here, we suggest that stochastic resonance could explain the necessary amplification of the forcing and provide numerical evidence from stochastic time-delayed dynamo models. If the intrinsic noise of the solar dynamo allows for a frequent switching between active and quiescent stable states, tiny periodic forcings can be greatly amplified, provided the dynamo is poised close to a critical point. Such a forcing could be caused by a tidal modulation of the minimal magnetic field required for flux-tube buoyancy.de_CH
dc.language.isoende_CH
dc.rightshttp://creativecommons.org/licenses/by/4.0/de_CH
dc.subjectPhysicsde_CH
dc.subjectSolar physicsde_CH
dc.subject.ddc500: Naturwissenschaften und Mathematikde_CH
dc.titleCan stochastic resonance explain the amplification of planetary tidal forcing?de_CH
dc.typeKonferenz: Sonstigesde_CH
dcterms.typeTextde_CH
zhaw.departementLife Sciences und Facility Managementde_CH
zhaw.organisationalunitInstitut für Angewandte Simulation (IAS)de_CH
zhaw.conference.detailsEGU General Assembly 2020, Online, 4-8 May 2020de_CH
zhaw.funding.euNode_CH
zhaw.originated.zhawYesde_CH
zhaw.publication.statuspublishedVersionde_CH
zhaw.publication.reviewPeer review (Abstract)de_CH
zhaw.webfeedBiomedical Simulationde_CH
zhaw.funding.zhawBISTOM - Bayesian Inference with Stochastic Modelsde_CH
zhaw.author.additionalNode_CH
zhaw.display.portraitYesde_CH
Appears in collections:Publikationen Life Sciences und Facility Management

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