Can stochastic resonance explain the amplification of planetary tidal forcing?

Albert, Carlo; Ulzega, Simone

Publication type:	Conference other
Type of review:	Not specified
Title:	Can stochastic resonance explain the amplification of planetary tidal forcing?
Authors:	Albert, Carlo Ulzega, Simone
et. al:	No
Conference details:	4th Solar Dynamo Thinkshop, Rome, Italy, 25 - 26 November 2019
Issue Date:	2019
Language:	English
Subject (DDC):	500: Natural sciences 510: Mathematics
Abstract:	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”.
URI:	https://digitalcollection.zhaw.ch/handle/11475/18954
Fulltext version:	Published version
License (according to publishing contract):	Not specified
Departement:	Life Sciences and Facility Management
Organisational Unit:	Institute of Computational Life Sciences (ICLS)
Published as part of the ZHAW project:	BISTOM - Bayesian Inference with Stochastic Models
Appears in collections:	Publikationen Life Sciences und Facility Management

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Albert, C., & Ulzega, S. (2019). Can stochastic resonance explain the amplification of planetary tidal forcing? 4th Solar Dynamo Thinkshop, Rome, Italy, 25 - 26 November 2019.

Albert, C. and Ulzega, S. (2019) ‘Can stochastic resonance explain the amplification of planetary tidal forcing?’, in 4th Solar Dynamo Thinkshop, Rome, Italy, 25 - 26 November 2019.

C. Albert and S. Ulzega, “Can stochastic resonance explain the amplification of planetary tidal forcing?,” in 4th Solar Dynamo Thinkshop, Rome, Italy, 25 - 26 November 2019, 2019.

ALBERT, Carlo und Simone ULZEGA, 2019. Can stochastic resonance explain the amplification of planetary tidal forcing? In: 4th Solar Dynamo Thinkshop, Rome, Italy, 25 - 26 November 2019. Conference presentation. 2019

Albert, Carlo, and Simone Ulzega. 2019. “Can Stochastic Resonance Explain the Amplification of Planetary Tidal Forcing?” Conference presentation. In 4th Solar Dynamo Thinkshop, Rome, Italy, 25 - 26 November 2019.

Albert, Carlo, and Simone Ulzega. “Can Stochastic Resonance Explain the Amplification of Planetary Tidal Forcing?” 4th Solar Dynamo Thinkshop, Rome, Italy, 25 - 26 November 2019, 2019.