The Relevance Of Seismic Reflection Polarity To Dredging Performance - A Case Study

It is common knowledge that a discontinuous increase in seismic impedance produces a<br>reflection of positive polarity and a discontinuous decrease produces a reflection of negative<br>polarity. That knowledge seldom is applied in engineering contexts, however, because the<br>polarity of seismic reflections is not always obvious. That is particularly true in the case of<br>single-channel marine data when signal amplitude is displayed on paper as shades of grey. This<br>contribution documents a case in which reflection polarity was critical not only to the<br>interpretation of the seismic data but also to the client’s profit margin.