f Source/Receiver Directivity Effects on Q Measurements from Surface Seismic Reflection Data

The seismic quality factor (Q) is an important lithology and porefluid indicator, as well as being important e.g. in AVO inversion. Dasgupta & Clark (1993, 1994) introduced a method (termed QVO) to measure Q from routine marine reflection data, facilitating large scale Q measurements. Here, we give a short review of QVO, then examine the impact of source and receiver directivity on Q estimates made this way.