Publikationstyp: Konferenz: Sonstiges
Art der Begutachtung: Keine Angabe
Titel: Can stochastic resonance explain the amplification of planetary tidal forcing?
Autor/-in: Albert, Carlo
Ulzega, Simone
et. al: No
Angaben zur Konferenz: 4th Solar Dynamo Thinkshop, Rome, Italy, 25 - 26 November 2019
Erscheinungsdatum: 2019
Sprache: Englisch
Fachgebiet (DDC): 500: Naturwissenschaften
510: Mathematik
Zusammenfassung: Repeated 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”.
Volltext Version: Publizierte Version
Lizenz (gemäss Verlagsvertrag): Keine Angabe
Departement: Life Sciences und Facility Management
Organisationseinheit: Institut für Computational Life Sciences (ICLS)
Publiziert im Rahmen des ZHAW-Projekts: BISTOM - Bayesian Inference with Stochastic Models
Enthalten in den Sammlungen:Publikationen Life Sciences und Facility Management

Dateien zu dieser Ressource:
Es gibt keine Dateien zu dieser Ressource.
Zur Langanzeige

Alle Ressourcen in diesem Repository sind urheberrechtlich geschützt, soweit nicht anderweitig angezeigt.