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El Yadari, N. (author), Ernst, F. (author), Mulder, W. (author)The effect of the near surface on seismic land data can be so severe that static corrections are insufficient. Full-waveform inversion followed by redatuming may be an alternative, but inversion will work only if the starting model is sufficiently close to the true model. As a first step toward determining a viscoelastic near-surface model, we...journal article 2008
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Chitu, D.A. (author), Al-Ali, M.N. (author), Verschuur, D.J. (author)In conventional migration velocity analysis methods, a velocity model is estimated that results in flattened events in common-image gathers. However, after this process, no information is available on the accuracy of this velocity model. A statistical analysis of velocity-model parameters is very difficult because of the integrated nature of the...journal article 2008