Lithospheric thinning beneath rifted regions of Southern California

Lithospheric thinning beneath rifted regions of Southern California

Conversions of teleseismic shear (S) waves to compressional (P) waves across velocity interfaces (such as the Moho or the lithosphere-asthenosphere boundary) allow us to map...

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Cluster analysis of upper mantle tomography

Cluster analysis of upper mantle tomography

When cluster analysis is used to classify the profiles of shear velocity (Vs) into N groups whose members are similar, the geographic extents of these...

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Full waveform tomography with the spectral element method

Full waveform tomography with the spectral element method

Map of lateral variations in the velocity of seismic shear waves (S-waves) at a depth of 125 km. Warm colors denote slower wavespeeds, and are...

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Frequency dependence of seismic attenuation

Frequency dependence of seismic attenuation

Preferred model (solid line) of frequency dependence of attenuation within the absorption band compared with constraints from laboratory studies (hachured region) and the frequency-independent assumption...

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Lithospheric structure beneath continental rifts

Lithospheric structure beneath continental rifts

Isotropic shear wavespeed variations in the upper mantle from the SEMum model [Lekic and Romanowicz, 2008]. The model is developed using the spectral element method...

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