In this work, we present a comprehensive rheological database including most of the existing data relevant for crystal-bearing magmas collected from the scientific literature, covering the entire range of natural volcanic conditions, in terms of crystal content (1-80%), crystal shape (aspect ratio R from 1 to 13), and strain rate (between 10(-7) and 10(2) s(-1)). Datasets were collected and discerned as a function of the information which we considered necessary for building a general systematic model describing relative viscosity of crystal-bearing magmas, such as the apparent and melt viscosity, the crystal concentration, crystal shape, and the strain rate. The selected dataset was then used for modelling the relative viscosity of a liquid-solid mixture having different concentrations of particles with different R, subjected to different strain rates. The proposed model allows us to quantitatively describe the rheological behaviour of crystal-bearing magmatic systems.

Frontoni, A., Costa, A., Vona, A., Romano, C. (2022). A comprehensive database of crystal-bearing magmas for the calibration of a rheological model. SCIENTIFIC DATA, 9(1) [10.1038/s41597-022-01363-w].

A comprehensive database of crystal-bearing magmas for the calibration of a rheological model

Frontoni, Alessandro
;
Vona, Alessandro;Romano, Claudia
2022

Abstract

In this work, we present a comprehensive rheological database including most of the existing data relevant for crystal-bearing magmas collected from the scientific literature, covering the entire range of natural volcanic conditions, in terms of crystal content (1-80%), crystal shape (aspect ratio R from 1 to 13), and strain rate (between 10(-7) and 10(2) s(-1)). Datasets were collected and discerned as a function of the information which we considered necessary for building a general systematic model describing relative viscosity of crystal-bearing magmas, such as the apparent and melt viscosity, the crystal concentration, crystal shape, and the strain rate. The selected dataset was then used for modelling the relative viscosity of a liquid-solid mixture having different concentrations of particles with different R, subjected to different strain rates. The proposed model allows us to quantitatively describe the rheological behaviour of crystal-bearing magmatic systems.
Frontoni, A., Costa, A., Vona, A., Romano, C. (2022). A comprehensive database of crystal-bearing magmas for the calibration of a rheological model. SCIENTIFIC DATA, 9(1) [10.1038/s41597-022-01363-w].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11590/421287
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