Paper Summary
This study introduces a novel application of depth velocity model building and imaging for site survey characterization. Tools from the oil and gas industry were adapted to process data with extremely high spatial and temporal resolution in unconsolidated geological settings. The proposed depth velocity model workflow produced a detailed model, resolving features as small as 20 meters laterally and a few meters vertically.
The methodology involved Kirchhoff Pre-Stack Depth Migration (KPSDM) and 3D depth reflection tomographic updates, with iterative velocity analysis performed in defined Model Building Units (MBUs). This approach allowed for accurate positioning of reflectors and captured critical subsurface details which can help deriving a more accurate ground model.