Estimation of Elastic Properties of the Near Subsurface from Shallow Seismic Reflection Recordings

We determine the P-wave and S-wave velocities after picking first-arrival travel-times and also the elastic modulus from the analysis of seismic data recorded using vertical component geophones only. We show that the inversion of the dispersion curves obtained for the fundamental and higher modes of surface waves provides accurate information about the S-wave velocity distribution into the near subsurface. Thin layers can be differentiated after the inversion of the higher mode of surface waves. Ultimately, based on the P-wave and S-wave velocities we estimate a series of elastic modulus which are used in geotechnical studies.