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Modelling compressible mantle convection with large viscosity contrasts in a three-dimensional spherical shell using the yin-yang grid
Here it is documented how an existing code for modelling mantle convection in a cartesian domain, Stag3D, has been converted to model a 3D spherical shell by using the recently introduced yin-yangExpand
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A doubling of the post-perovskite phase boundary and structure of the Earth's lowermost mantle
The thermal structure of the Earth's lowermost mantle—the D″ layer spanning depths of ∼2,600–2,900 kilometres—is key to understanding the dynamical state and history of our planet. Earth'sExpand
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Self‐consistent generation of tectonic plates in time‐dependent, three‐dimensional mantle convection simulations 2. Strain weakening and asthenosphere
[1] In a previous paper [Tackley, 2000b] it was shown that a combination of temperature-dependent viscosity and viscoplastic yielding is sufficient to give rudimentary plate tectonic-like behavior inExpand
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Self‐consistent generation of tectonic plates in time‐dependent, three‐dimensional mantle convection simulations
[1] Presented here are self-consistent, three-dimensional simulations of mantle convection, some of which display an approximation of plate tectonic behavior that is continuous in space and time.Expand
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Testing the tracer ratio method for modeling active compositional fields in mantle convection simulations
[1] Tracer methods are attractive for modeling compositional fields because they offer the potential of zero numerical diffusion. Composition is typically taken to be proportional to the absoluteExpand
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Effects of an endothermic phase transition at 670 km depth in a spherical model of convection in the Earth's mantle
Numerical modelling of mantle convection in a spherical shell with an endothermic phase change at 670 km depth reveals an inherently three-dimensional flow pattern, containing cylindrical plumes andExpand
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A comparison of numerical surface topography calculations in geodynamic modelling: an evaluation of the ‘sticky air’ method
SUMMARY Calculating surface topography in geodynamic models is a common numerical problem. Besides other approaches, the so-called ‘sticky air’ approach has gained interest as a free-surface proxy atExpand
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Dynamics and evolution of the deep mantle resulting from thermal, chemical, phase and melting effects
Abstract The core–mantle boundary (CMB) – the interface between the silicate mantle and liquid iron alloy outer core – is the most important boundary inside our planet, with processes occurring inExpand
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Self-consistent generation of tectonic plates in three-dimensional mantle convection
Abstract Despite the fundamental importance of plates in the Earth's mantle convection, plates have not generally been included in numerical convection models or analog laboratory experiments, mainlyExpand
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Strong heterogeneity caused by deep mantle layering
[1] Numerical simulations are used to characterize the volumetric heterogeneity associated with proposed chemical layering in the deep mantle. A globally continuous, undulating layer generatesExpand
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