... Although this implies a vast number of gas seepage sites it is probable that only a small proportion of the pockmarks are currently ‘active’. pockmark gas seepage survey llne sediment witch reservoir characterization mlgratlon plume upstream oil & gas bright spot safety offshore...

..., along with examples of correct and incorrect ways of applying some of these procedures. Finally, these topics are clearly illustrated using a typical example of a "bright spot", and some useful characteristics and information one can derive if the time and resources are made available. INTRODUCTION...