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 …

The goal of this paper is to provide an overview of the current state of the art in seismic
tomography, and trace its origins from pioneering work in the early 1970s to its present …

Seismic ray theory Page 1 Seismic ray theory Vlastislav Cervený 1) and Ivan Pšencık 2) 1)
Charles University, Faculty of Mathematics and Physics, Department of Geophysics, Prague …

Publisher Summary The ability to estimate accurately seismic hazard at very low probability
of exceedance may be important in protecting special objects in the built environment …

We introduce a new tomographic method for estimating velocity macro-models from seismic
reflection data. In addition to traveltimes picked on locally coherent reflected events, the …

Complex velocity models characterized by strong lateral variations are certainly a great
motivation, but also a great challenge, for depth imaging. In this context, some unexpected …

Kinematic information for constructing velocity models can be extracted in a robust way from
seismic prestack data with the common-reflection-surface (CRS) stack. This data-driven …

Publisher Summary This chapter describes a variety of schemes for tracking the kinematic
evolution of high frequency seismic waves in heterogeneous 2-D and 3-D structures. Where …

The first-order perturbation method is used to evaluate approximate phase velocities and
polarization vectors in elastic anisotropic media. Formulae are given which make possible …

Reflection tomography, the determination of velocity distribution and reflector position from
reflection travel-time data, is a very non-linear inverse problem. Unlike in transmission …