Paper Summary
Lower frequency energy in the source wavelet is more likely to penetrate through the basalt than higher frequencies as it is less attenuated by intrinsic absorption, and less scattered by the heterogeneity of the basalt reflectors. A solution to providing improved images beneath basalt flows is therefore to generate, retain and enhance as much low frequency energy as possible. Whilst accepting that carefully parameterised acquisition can be used to provide a greater richness in low frequency signal the sub-basalt image is primarily dependent on the careful retention and enhancement of low frequency signal at the seismic processing stage.
