Extended Data Fig. 8: Common image gathers (CIG) across Inline 500 showing the flattening of deep events following depth migration using the FWI/tomographic inversion model.

Gathers are flattened across the full range of offsets within depths equivalent to regions interpreted in Figs. 3, 4, Supplementary Figs. 4 & 5. These flattened gathers help validate the velocity model.