NSF considers recommendations for marine seismic reflection

Pitfalls in Shallow Seismic Reflection

Substantial progress has occurred during the past 15 years in development of shallow CDP seismic-reflection techniques, but there are occasional interpretation problems with the resulting data. We discuss examples of the pitfalls of the method, along with some procedures to help avoid them. Problems that often occur include spatial aliasing of ground roll, interpreting processed ground-coupled ...

Bayesian estimation of non-minimum phase wavelets applied to marine reflection seismic data

In this paper, the problem of wavelet estimation for marine seismology is investigated with a bayesian approach applied to a Bernoulli-Gaussian model. We specify proper prior distributions for all unknown quantities including the seismic wavelet, the parameters of the reflectivity sequence and noise. To solve this estimation problem, an algorithm close to a stochastic version of the EM algorith...

Pre-stack full waveform inversion of ultra-high-frequency marine seismic reflection data

Time-frequency analysis of seismic reflection signals

In this paper we show the implementation of bilinear time-frequency representations in the interpretation of seismic data. In seismic stratigraphy the reeection patterns in seismic data are interpreted in terms of subsurface stratiication and lithological properties. The time-frequency representation clearly elicits seismic reeection patterns and can thus provide useful information on subsurfac...

Seismic Interferometry: reconstructing the Earth’s reflection response

Can the reflection response of the subsurface be obtained without the need to place an active source at the surface? Using numerical modeling results based on one-way wavefields, we show that the reflection response of a 3-D inhomogeneous lossless medium can be reconstructed from the crosscorrelation of its transmission response at the surface. Depending on the type of subsurface noise sources,...