Seismic wavefield imaging of Earth's interior across scales

J Tromp - Nature Reviews Earth & Environment, 2020 - nature.com
Seismic full-waveform inversion (FWI) for imaging Earth's interior was introduced in the late
1970s. Its ultimate goal is to use all of the information in a seismogram to understand the …

Uncertainty and resolution analysis of 2D and 3D inversion models computed from geophysical electromagnetic data

Z Ren, T Kalscheuer - Surveys in Geophysics, 2020 - Springer
A meaningful solution to an inversion problem should be composed of the preferred
inversion model and its uncertainty and resolution estimates. The model uncertainty …

Seismic structure of the upper mantle beneath eastern Asia from full waveform seismic tomography

K Tao, SP Grand, F Niu - Geochemistry, Geophysics …, 2018 - Wiley Online Library
To better understand the subsurface behavior of subducting slabs and their relation to the
tectonic evolution of the overriding plate, we conduct a full waveform inversion on a large …

Global adjoint tomography—model GLAD-M25

W Lei, Y Ruan, E Bozdağ, D Peter… - Geophysical Journal …, 2020 - academic.oup.com
Building on global adjoint tomography model GLAD-M15, we present transversely isotropic
global model GLAD-M25, which is the result of 10 quasi-Newton tomographic iterations with …

Global adjoint tomography: first-generation model

E Bozdağ, D Peter, M Lefebvre… - … Supplements to the …, 2016 - academic.oup.com
We present the first-generation global tomographic model constructed based on adjoint
tomography, an iterative full-waveform inversion technique. Synthetic seismograms were …

On the use of sensitivity tests in seismic tomography

N Rawlinson, W Spakman - Geophysical Journal International, 2016 - academic.oup.com
Sensitivity analysis with synthetic models is widely used in seismic tomography as a means
for assessing the spatial resolution of solutions produced by, in most cases, linear or …

Bayesian elastic full‐waveform inversion using Hamiltonian Monte Carlo

L Gebraad, C Boehm, A Fichtner - Journal of Geophysical …, 2020 - Wiley Online Library
We present a proof of concept for Bayesian elastic full‐waveform inversion in 2‐D. This is
based on (1) Hamiltonian Monte Carlo sampling of the posterior distribution,(2) the …

An automatically updated S‐wave model of the upper mantle and the depth extent of azimuthal anisotropy

E Debayle, F Dubuffet, S Durand - Geophysical Research …, 2016 - Wiley Online Library
Abstract We present 3D2015_07Sv, an S wave model of the upper mantle based on the
waveform modeling of 1,359,470 Rayleigh waves recorded since 1976. The use of …

A Bayesian approach to estimate uncertainty for full-waveform inversion using a priori information from depth migration

H Zhu, S Li, S Fomel, G Stadler, O Ghattas - Geophysics, 2016 - library.seg.org
Full-waveform inversion (FWI) enables us to obtain high-resolution subsurface images;
however, estimating model uncertainties associated with this technique is still a challenging …

The collaborative seismic earth model: generation 1

A Fichtner, DP van Herwaarden… - Geophysical …, 2018 - Wiley Online Library
We present a general concept for evolutionary, collaborative, multiscale inversion of
geophysical data, specifically applied to the construction of a first‐generation Collaborative …