Global shear speed structure of the upper mantle and transition zone

AJ Schaeffer, S Lebedev - Geophysical Journal International, 2013 - academic.oup.com
The rapid expansion of broad-band seismic networks over the last decade has paved the
way for a new generation of global tomographic models. Significantly improved resolution of …

Heterogeneity of seismic wave velocity in Earth's mantle

J Ritsema, V Lekić - Annual Review of Earth and Planetary …, 2020 - annualreviews.org
Seismology provides important constraints on the structure and dynamics of the deep
mantle. Computational and methodological advances in the past two decades improved …

WINTERC-G: mapping the upper mantle thermochemical heterogeneity from coupled geophysical–petrological inversion of seismic waveforms, heat flow, surface …

J Fullea, S Lebedev, Z Martinec… - Geophysical Journal …, 2021 - academic.oup.com
We present a new global thermochemical model of the lithosphere and underlying upper
mantle constrained by state of the art seismic waveform inversion, satellite gravity (geoid …

Savani: A variable resolution whole‐mantle model of anisotropic shear velocity variations based on multiple data sets

L Auer, L Boschi, TW Becker… - Journal of …, 2014 - Wiley Online Library
We present a tomographic model of radially anisotropic shear velocity variations in the
Earth's mantle based on a new compilation of previously published data sets and a variable …

A global model of Love and Rayleigh surface wave dispersion and anisotropy, 25-250 s

G Ekström - Geophysical Journal International, 2011 - academic.oup.com
A large number of fundamental-mode Love and Rayleigh wave dispersion curves were
determined from seismograms for 3330 earthquakes recorded on 258 globally distributed …

An anisotropic shear velocity model of the Earth's mantle using normal modes, body waves, surface waves and long-period waveforms

P Moulik, G Ekström - Geophysical Journal International, 2014 - academic.oup.com
We use normal-mode splitting functions in addition to surface wave phase anomalies, body
wave traveltimes and long-period waveforms to construct a 3-D model of anisotropic shear …

Changes in seismic anisotropy shed light on the nature of the Gutenberg discontinuity

C Beghein, K Yuan, N Schmerr, Z Xing - Science, 2014 - science.org
The boundary between the lithosphere and asthenosphere is associated with a platewide
high–seismic velocity “lid” overlying lowered velocities, consistent with thermal models …

The relationships between large‐scale variations in shear velocity, density, and compressional velocity in the Earth's mantle

P Moulik, G Ekström - Journal of Geophysical Research: Solid …, 2016 - Wiley Online Library
A large data set of surface wave phase anomalies, body wave travel times, normal‐mode
splitting functions, and long‐period waveforms is used to investigate the scaling between …

Azimuthal seismic anisotropy in the Earth's upper mantle and the thickness of tectonic plates

AJ Schaeffer, S Lebedev… - … Supplements to the …, 2016 - academic.oup.com
Azimuthal seismic anisotropy, the dependence of seismic wave speeds on propagation
azimuth, is largely due to fabrics within the Earth's crust and mantle, produced by …

Oceanic lithosphere‐asthenosphere boundary from surface wave dispersion data

G Burgos, JP Montagner, E Beucler… - Journal of …, 2014 - Wiley Online Library
According to different types of observations, the nature of lithosphere‐asthenosphere
boundary (LAB) is controversial. Using a massive data set of surface wave dispersions in a …