Full-waveform inversion (FWI) is a challenging data-fitting procedure based on full-wavefield
modeling to extract quantitative information from seismograms. High-resolution imaging at …

Estimating the model parameters from measured data generally consists of minimizing an
error functional. A classic technique to solve a minimization problem is to successively …

Conventional full-waveform inversion (FWI) using the least-squares norm as a misfit function
is known to suffer from cycle-skipping issues that increase the risk of computing a local …

Recent progress in numerical methods and computer science allows us today to simulate
the propagation of seismic waves through realistically heterogeneous Earth models with …

By specifying a discrete matrix formulation for the frequency–space modelling problem for
linear partial differential equations ('FDM'methods), it is possible to derive a matrix formalism …

Seismic waveforms contain much information that is ignored under standard processing
schemes; seismic waveform inversion seeks to use the full information content of the …

We present the first-generation global tomographic model constructed based on adjoint
tomography, an iterative full-waveform inversion technique. Synthetic seismograms were …

This paper presents a new traveltime inversion method based on the wave equation. In this
new method, designated as wave-equation traveltime inversion (WT), seismograms are …

Prestack migration and/or inversion may be implemented in either the time or the frequency
domain. In the frequency domain, it is possible to discretize the frequencies with a much …

We draw connections between seismic tomography, adjoint methods popular in climate and
ocean dynamics, time-reversal imaging and finite-frequency 'banana-doughnut'kernels. We …