Geophysical characterization of calderas is fundamental in assessing their potential for
future catastrophic volcanic eruptions. The mechanism behind the unrest of Long Valley …

Full waveform inversion (FWI) is a promising technique for inverting a high-resolution
subsurface velocity model. The success of FWI highly depends on a fairly well initial velocity …

The eikonal equation is instrumental in many applications in several fields ranging from
computer vision to geoscience. This equation can be efficiently solved using the iterative …

Acoustic impedance (AI) is a key parameter frequently used for characterizing reservoirs in
the oil and gas industry. The absolute AI can be divided into background and high …

Weighted semblance can be used for improving the performance of traditional semblance
for specific data sets. We have developed a novel approach for prestack velocity analysis …

Seismic traveltime is critical information conveyed by seismic waves, widely used in various
geophysical applications. Conventionally, the simulation of seismic traveltime involves …

Velocity analysis is crucial in reflection seismic data processing and imaging. Velocity
picking is widely used in the industry for building the initial velocity model. When the size of …

We present an object-oriented optimization framework that can be employed to solve small-
and large-scale problems based on the concept of vectors and operators. By using such a …

Estimating parameters of partial differential equations (PDEs) from noisy and indirect
measurements often requires solving ill-posed inverse problems. These so-called parameter …

Fast methods are very popular algorithms to compute time-of-arrival maps (distance maps
measured in time units) solving the Eikonal equation. Since fast marching was proposed in …