Exploring structural uncertainty through seismic forward modelling

Autor: Oldfield, Simon, Paton, Douglas A., Bramham, Emma K., Torvela, Taija
Rok vydání: 2018
DOI: 10.6084/m9.figshare.5217829
Popis: Presented at the Geological Society of London's Tectonic Studies Group AGM January 2017.Seismic reflection profiles provide invaluable information on the geometry and composition of the subsurface, however the complexity of their acquisition and processing often limits their imaging quality. This is particularly the case for areas of complex geological structure.During interpretation, this leads to reliance on the application of deformation templates and validation through kinematic balancing methods. Both, provide non-unique solutions, frequently biased by the interpreters past experience.Using group interpretation, facilitated by Agile Geoscience’s Pick This application, we demonstrate an approach to compile a selection of interpretations, validated by kinematic modelling and subsequently seismically forward modelled for direct comparison to the original input data.Such approaches are common in application to amplitudeanalysis, however tend to be avoided at larger scales due to the requirement for elastic properties. Applying broadlyrepresentative parameters we demonstrate valuable geometric information may be gained informing the interpreter of likely illumination patterns and potential resolution constraints.This allows direct comparison of an interpretation in the form of a seismic profile to the original data, effectively allowing informed mapping of the imaging uncertainty within a section.
Databáze: OpenAIRE