Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/2379
Authors: Longo, A.* 
Vassalli, M.* 
Papale, P.* 
Barsanti, M.* 
Title: Numerical simulation of convection and mixing in magma chambers replenished with CO2-rich magma
Journal: Geophys. Res. Lett. 
Series/Report no.: /33 (2006)
Publisher: Agu
Issue Date: 2006
DOI: 10.1029/2006GL27760
Keywords: Numerical simulation
magma chambers
Subject Classification05. General::05.01. Computational geophysics::05.01.05. Algorithms and implementation 
Abstract: Magma convection and mixing, and periodic refilling, commonly occur in magma chambers.We show here that the presence of CO2 in the refilling magma is a very efficient mean of inducing buoyant-driven plume rise and large scale convection. Numerical simulations performed with an appositely developed code for the transient 2D dynamics of multicomponent compressible to incompressible fluids reveal several features of the processes of plume rise, convection and mixing in magma chambers associated with chamber refilling. A parametric study on CO2 abundance in the refilling magma shows that progressively larger amounts of this volatile produce a shift from simple plume rise and spreading near the chamber top, to complex patterns of flow circulation and large scale vorticity and mixing. Lower chamber depth and lower magma viscosity largely enhance the efficiency of mixing and convection, favoring the formation of multiple vortexes migrating with time.
Appears in Collections:Article published / in press

Files in This Item:
File Description SizeFormat Existing users please Login
897.pdf3.15 MBAdobe PDF
Show full item record

Page view(s)

143
checked on Jul 3, 2022

Download(s)

28
checked on Jul 3, 2022

Google ScholarTM

Check

Altmetric