Dix-Type Multi-Component Scholte Wave Dispersion Inversion Without Initial Model

>0 INTRODUCTION Scholte wave dispersion curves contain rich information regarding seafloor media and have therefore attracted increasing attention(Wang et al., 2022; Dong et al., 2021; Du et al., 2020). Ocean bottom seismometer(OBS) data are widely used in the study of seafloor medium information(Wang et al., 2024), and contain rich surface wave information. Surface wave dispersion curve inversion, a key processing technique can be applied to obtain parameters such as shear wave velocity, thickness, and Poissonpersion curve invers' s ratio of geological layers. However, dision is an iterative optimization process that is characterized by multiple parameters, extremes, and modes, due to its high nonlinearity(Cox and Teague, 2016; Xia et al., 1999). Specific surface wave analysis techniques must be developed to overcome the challenges associated with the dispersion curve inversion.