The objective of this special section is to show the state-of-the-art in assessing the sensitivity of rocks to stress and how this can be used to further our understanding in exploration and production. As we approach more and more quantitative use of seismic data for purposes of exploration, reservoir characterization, and reservoir surveillance, understanding how rocks react under stress and how this information can be used becomes more important. Changes in the stress field have an effect on layer thickness, seismic velocity, density, anisotropy, and fracture orientation as observed in reservoir sands, overburden/underburden shales, and in carbonates.

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