ABSTRACT
The multichannel analysis of surface wave (MASW) method is widely applied in geotechnical site characterization but less so in non-destructive infrastructure evaluation. Conventional approaches relying on fundamental-mode inversion often encounters issues like potential mode misidentification and the generation of distinct models that fit the experimental data equally well. To address these issues, we introduce recent advancements in full-wavefield modeling and inversion, enabling shear-wave velocity profiling by fitting the entire frequency-velocity spectrum amplitude without the need for dispersion curve picking. Applications include onshore surveys, offshore surveys with air guns and hydrophones, and air-coupled measurements. A new layer parameterization and initial model estimation are also proposed. Full-wavefield inversion combined with uncertainty analysis offers a more accurate and reliable framework for subsurface characterization across various testing scenarios.
