In this paper, traveltime tomography is carried out by using a back-projection algorithm. The
initial velocity model is a 1-D function of depth, between depths 5 km and-15 km. The …

A new traveltime tomographic method was developed with hierarchical shape functions of
the finite element method as slowness or velocity interpolation functions. The degree of the …

In most geometries in which seismic traveltime tomography is applied (eg, surface reflection,
cross-well, or VSP), the slowness field is not well-determined from traveltimes alone …

This document describes how to use the Fortran 90 software package FMST for performing
travel time tomography. The fast marching method (FMM) is used for the forward prediction …

Traditionally in the problem of tomographic traveltime inversion, the model is divided into a
number of rectangular cells of constant slowness. Inversion consists of finding these …

This short paper summarizes the recent development and application of a node-based
tomography inversion algorithm. The node model provides adaptive gridding to address the …

The first-arrival traveltime tomography is an effective imaging method in seismic data
processing. By applying the traveltime tomography, we can obtain the near-surface velocity …

Abstract Three-dimensional (3D) seismic surveys have become a major tool in the
exploration and exploitation of hydrocarbons. 3D seismic first-arrival traveltime tomography …

We present a criterion to evaluate the reliability of the velocity model obtained from
traveltime tomographic inversion with Tikhonov regularization. The criterion is based on …

Traveltime tomography is a technique to reconstruct acoustic, seismic, or electromagnetic
wave-speed distributions from first arrival traveltime data. The ray paths that should be used …