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dc.contributor.authorAlbert, Carlo-
dc.contributor.authorUlzega, Simone-
dc.date.accessioned2019-12-19T10:37:03Z-
dc.date.available2019-12-19T10:37:03Z-
dc.date.issued2019-
dc.identifier.urihttps://digitalcollection.zhaw.ch/handle/11475/18954-
dc.description.abstractRepeated Grand Minima revealed by proxies of solar activity suggest that the Sun alternates between two stable states, a quiescent and an active one. If the intrinsic noise of the solar dynamo allows for a frequent switching between these stable states, a tiny periodic modulation of the corresponding transition probabilities can be greatly amplified – a phenomenon known as stochastic resonance. It is well-known that Babcock-Leighton-type dynamo models can be reduced to a stochastic iterative map model capable of capturing the essential low-frequency features of the solar dynamo mechanism. In such a simplified framework, we give numerical evidence that a tiny tidal modulation of the minimal magnetic field required for flux-tube buoyancy is greatly amplified by the dynamo, provided that it operates close enough to a critical bifurcation point. Inference with more refined dynamo models is required to test this “criticality hypothesis”.de_CH
dc.language.isoende_CH
dc.rightsNot specifiedde_CH
dc.subject.ddc500: Naturwissenschaftende_CH
dc.subject.ddc510: 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 Computational Life Sciences (ICLS)de_CH
zhaw.conference.details4th Solar Dynamo Thinkshop, Rome, Italy, 25 - 26 November 2019de_CH
zhaw.funding.euNode_CH
zhaw.originated.zhawYesde_CH
zhaw.publication.statuspublishedVersionde_CH
zhaw.publication.reviewNot specifiedde_CH
zhaw.webfeedBiomedical Simulationde_CH
zhaw.funding.zhawBISTOM - Bayesian Inference with Stochastic Modelsde_CH
zhaw.author.additionalNode_CH
Appears in collections:Publikationen Life Sciences und Facility Management

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