Seismic tomography has been a vital tool in probing the Earth's internal structure and
enhancing our knowledge of dynamical processes in the Earth's crust and mantle. While …

We have successfully applied full‐3‐D tomography (F3DT) based on a combination of the
scattering‐integral method (SI‐F3DT) and the adjoint‐wavefield method (AW‐F3DT) to …

We analyze the problem of a heterogeneous formulation of the equation of motion and
propose a new 3D fourth-order staggered-grid finite-difference (FD) scheme for modeling …

We review Gaussian process regression (GPR) and analyze it in the context of Inverse
Theory—the collection of techniques used in geophysics (among other fields) to understand …

A central problem of seismology is the inversion of regional waveform data for models of
earthquake sources. In regions such as Southern California, preliminary 3-D earth structure …

We perform 3D simulations of seismic wavefields to clarify effects of strong reductions of
shallow velocities on long‐period seismic waves. The simulations use a reference …

The seismological inverse problem has much in common with the data assimilation problem
found in meteorology and oceanography. Using the data assimilation methodology, I will …

We present a semi-automatic seismic waveform selection algorithm that can be used in full 3-
D waveform inversions for earthquake source parameters and/or earth structure models. The …

We propose a new way of measuring the delay times of body waves, based on the time
differences between short segments of a phase. Using this proposed methodology, which …

Full-3D waveform tomography (F3DT) is often formulated as an optimization problem, in
which an objective function defined in terms of the misfit between observed and model …