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A numerical program for steady-state flow of magma-gas mixtures through vertical eruptive conduits

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A numerical program for steady-state flow of magma-gas mixtures through vertical eruptive conduits; 2000; OFR; 2000-209; Mastin, Larry G.; Ghiorso, Mark S.

Summary

This report presents a model that calculates flow properties (pressure, vesicularity, and some 35 other parameters) as a function of vertical position within a volcanic conduit during a steady-state eruption. The model idealizes the magma-gas mixture as a single homogeneousfluid and calculates gas exsolution under the assumption of equilibrium conditions. These are the same assumptions on which classic conduit models (e.g. Wilson and Head, 1981) have been based. They are most appropriate when applied to eruptions of rapidly ascending magma (basaltic lava-fountain eruptions, and Plinian or sub-Plinian eruptions of intermediate or silicic magmas) that contains abundant nucleation sites (microlites, for example) for bubble growth.

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Type Scheme Key
local-index unknown ofr00209
local-pk unknown 31154
doi http://www.loc.gov/standards/mods/mods-outline-3-5.html#identifier doi:10.3133/ofr00209
series unknown Open-File Report

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journalOpen-File Report
parts
typePublication Place
valueVancouver, WA
editionVersion 1.0.0 October 2000; Version 1.0.5c November 2013
languageEnglish
citationTypeReport

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