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http://hdl.handle.net/2122/15838
Authors: | Frontoni, Alessandro* Costa, Antonio* Vona, Alessandro* Romano, Claudia* |
Title: | A comprehensive database of crystal-bearing magmas for the calibration of a rheological model | Journal: | Scientific Data | Series/Report no.: | /9 (2022) | Publisher: | Springer-Nature | Issue Date: | 30-May-2022 | DOI: | 10.1038/s41597-022-01363-w | 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 102 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. |
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frocos2022.pdf | Open Access published article | 1.93 MB | Adobe PDF | View/Open |
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