Very high-resolution seismic imaging in complex environments - A comparison among CRS, CMP and PSDM

The common-reflection surface stack technique was used, together with conventional common-midpoint and pre-stack depth migration to process a high-resolution seismic reflection line acquired in the dismissed industrial plant of ILVA. This brownfield site, now undergoing remediation, is located within the Bagnoli district of the city of Naples, near the southeastern border of Campi Flegrei caldera. The commonreflection surface stack, followed by post-stack depth migration, produced a seismic image more suited for a subsurface interpretation. Results reveal that the Common-Reflection-Surface stack can be a fast and cost-effective alternative to pre-stack depth migration in settings where structural complexity and high levels of ambient noise make it challenging to obtain a reliable background velocity model; therefore allowing high-resolution reflection seismology to be successfully employed in those environments. © (2015) by the European Association of Geoscientists & Engineers (EAGE).