The fidelity of depth seismic imaging depends on the accuracy of the velocity models used for wavefield reconstruction. Models can be decomposed in two components corresponding to large scale and small scale variations. In practice, the large scale velocity model component can be estimated with high accuracy using repeated migration/tomography cycles, but the small scale component cannot. When the Earth has significant small-scale velocity components, wavefield reconstruction does not… CONTINUE READING

Inverse theory applied to multi - source cross - hole tomography . part 1 : Acoustic wave - equation method :

B. Biondi

Geophys . Prosp .

1990

Inverse theory applied to multi - source cross - hole tomography . part 2 : Elastic wave - equation method :

R. G. Pratt, M. H. Worthington

Geophys . Prosp .

1990

1 Excerpt

Inverse theory applied to multi-source cross-hole tomography

R G.

SIAM J. Appl. Math.,

1990

Reverse time migration

E. Baysal, D. D. Kosloff, J.W.C. Sherwood

1983

1 Excerpt

Wigner distribution functions Consider the complex signal u (t) which depends on time t. By definition, its Wigner distribution function (WDF) is (Wigner