Mark Vardy has 14 years’ experience in the acquisition, processing and interpretation of seismic reflection data. He is currently head of R&D at SAND Geophysics and holds a Visiting Researcher position at the University of Southampton, where he has taught seismic processing and interpretation methods at undergraduate and postgraduate level. He has contributed to a wide-range of academic and industry projects, working with data at all scales (engineering to crustal), 2D and 3D, and in a broad range of environments (both deep and shallow water). However, his primary focus is on quantitative imaging/inversion at engineering scales.