We have developed model S40RTS of shear-velocity variation in Earth's mantle using a new
collection of Rayleigh wave phase velocity, teleseismic body-wave traveltime and normal-…

The main benefit of this new package is a marked increase in flexibility. It will handle many
types of velocity models, instead of being limited to just a few. A new phase parser allows …

A model of three-dimensional shear wave velocity variations in the mantle reveals a tilted
low velocity anomaly extending from the core-mantle boundary (CMB) region beneath the …

Our understanding of large‐scale mantle dynamics depends on accurate models of seismic
velocity variation in the upper mantle transition zone (400–1000 km depth). With the Mode …

Numerical models demonstrate that small-scale convection develops in the upper mantle
beneath the transition of thick cratonic lithosphere and thin oceanic lithosphere. These models …

We explore the hypothesis that southern Africa is actively being uplifted by a large‐scale,
positively buoyant structure within the mid‐lower mantle. Using a new formulation in which …

The propagation of seismic waves through Earth can now be modeled accurately with the
recently developed spectral-element method. This method takes into account heterogeneity in …

We use a self-consistent thermodynamic formalism to compute the phase equilibria and
physical properties of model mantle compositions, demonstrating that the seismological …

Two large low-shear-velocity provinces (LLSVPs) in the deep mantle beneath Africa and the
Pacific are generally interpreted as hot but chemically dense ‘piles’, which have remained …

The assertion of cratonic stability put forward in the model for deep continental structure can
be tested by examining upper mantle structure beneath the Tanzania Craton, which lies …