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Communication Dans Un Congrès Année : 2023

A toy model for approaching volcanic plumbing systems as complex systems

Résumé

Magmas form at depth, move upwards and evolve chemically through a combination of processes. Power-law relationships describe eruption magnitudes, frequencies, and durations. Such relationships are typical of non-linear and self-organised systems with critical points. A growing body of evidence indicates that several magma chambers connect before and during eruptions. In this work, we investigate the potential of the network approach through a prototype of magma pool interaction and magma transfer across the crust. In network terms, it describes a diffusion process on a dynamic spatial network, in which diffusion and network evolution are intertwined: the diffusion affects the network structure, and reciprocally. This model is a proof of concept where mechanisms are based on analogies: space and time are not realistic, the system is isothermal, etc. Nevertheless, it succeeds in showing that a system governed by the same mechanical rules and fed by a linear input of magma at the bottom, can result in nonlinear behaviors at the surface (e.g., episodic volcanic eruptions).
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Dates et versions

hal-04166088 , version 1 (19-07-2023)

Identifiants

  • HAL Id : hal-04166088 , version 1

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Rémy Cazabet, Catherine Annen, Jean-François Moyen, Roberto Weinberg. A toy model for approaching volcanic plumbing systems as complex systems. 3rd French Regional Conference on Complex Systems (FRCCS 2023), May 2023, Le Havre, France. ⟨hal-04166088⟩
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