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Authors: Piromallo, C.*
Becker, T. W.*
Funiciello, F.*
Faccenna, C.*
Title: Three-dimensional instantaneous mantle flow induced by subduction
Title of journal: Geophys. Res. Lett.
Series/Report no.: /33 (2006)
Publisher: Agu
Issue Date: 2006
DOI: 10.1029/2005GL025390
Keywords: mantle flow
Abstract: We conduct three-dimensional subduction experiments by a finite element approach to study flow around slabs, which are prescribed based on a transient stage of upper mantle subduction from a laboratory model. Instantaneous velocity field solutions are examined, focusing on the toroidal vs. poloidal components as a function of boundary conditions, plate width, and viscosity contrast between slab and mantle. We show how the slab-to-mantle viscosity ratio determines the strength of toroidal flow, and find that the toroidal flow component peaks for slab/mantle viscosity ratios ~100 independent of slab width or geometry.
Appears in Collections:04.01.03. Mantle and Core dynamics
Papers Published / Papers in press

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