Gebruikersprofielen voor "Ritsema, J. "
Jeroen RitsemaUniversity of Michigan Geverifieerd e-mailadres voor umich.edu Geciteerd door 10529 |
S40RTS: a degree-40 shear-velocity model for the mantle from new Rayleigh wave dispersion, teleseismic traveltime and normal-mode splitting function …
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-…
collection of Rayleigh wave phase velocity, teleseismic body-wave traveltime and normal-…
[PDF][PDF] The TauP Toolkit: Flexible seismic travel-time and ray-path utilities
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 …
types of velocity models, instead of being limited to just a few. A new phase parser allows …
Complex shear wave velocity structure imaged beneath Africa and Iceland
J Ritsema, HJ Heijst, JH Woodhouse - Science, 1999 - science.org
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 …
low velocity anomaly extending from the core-mantle boundary (CMB) region beneath the …
Global transition zone tomography
J Ritsema, HJ van Heijst… - Journal of Geophysical …, 2004 - Wiley Online Library
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 …
velocity variation in the upper mantle transition zone (400–1000 km depth). With the Mode …
African hot spot volcanism: small-scale convection in the upper mantle beneath cratons
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 …
beneath the transition of thick cratonic lithosphere and thin oceanic lithosphere. These models …
Constraining mantle density structure using geological evidence of surface uplift rates: The case of the African superplume
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 …
positively buoyant structure within the mid‐lower mantle. Using a new formulation in which …
The spectral-element method, Beowulf computing, and global seismology
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 …
recently developed spectral-element method. This method takes into account heterogeneity in …
The effect of bulk composition and temperature on mantle seismic structure
W Xu, C Lithgow-Bertelloni, L Stixrude… - Earth and Planetary …, 2008 - Elsevier
We use a self-consistent thermodynamic formalism to compute the phase equilibria and
physical properties of model mantle compositions, demonstrating that the seismological …
physical properties of model mantle compositions, demonstrating that the seismological …
Reconciling dynamic and seismic models of Earth's lower mantle: The dominant role of thermal heterogeneity
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 …
Pacific are generally interpreted as hot but chemically dense ‘piles’, which have remained …
Joint inversion for global isotropic and radially anisotropic mantle structure including crustal thickness perturbations
We present a new global whole‐mantle model of isotropic and radially anisotropic S velocity
structure (SGLOBE‐rani) based on ~43,000,000 surface wave and ~420,000 body wave …
structure (SGLOBE‐rani) based on ~43,000,000 surface wave and ~420,000 body wave …