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An introduction to this special section

The first 20% of the full text of this article appears below.

Meaningful interpretation of reflection and tomographic data require a correct understanding of the involved acquisition and recording characteristics, so as to separate the wavefield information that comes from the medium under investigation from the information that solely refers to the probing wavefield.

In seismic operations, the problem of removing, or at least attenuating, the influence of the artifacts introduced by data acquisition and recording is aggravated by the complicated nature of the measurement procedures (large areal land or marine surveys) and devices (e.g., vibroseis, air-gun arrays, multicomponent receivers in difficult locations, etc.). This explains why the wavelet-estimation problem is an old and important topic in geophysics. Currently, demands of amplitude control and accuracy are drastically increasing to face new challenges in reservoir imaging, characterization, and interpretation, and classic topics such as seismic acquisition and wavelet estimation. Thus, they are bound to receive renewed attention and be the subject of intense research and development in the near future.

In its broader sense, the wavelet-estimation problem means the determination (and removal) of the effects of the . . . [Full Text of this Article]