f Simultaneous inversion of group- and phase-velocity data in engineering seismics

In engineering seismics it is important to get complete information about the lithostructural parameters of near surface layers. By a simultaneous inversion of the groupand phase-velocity dispersion data of Rayleigh surface waves it is possible to determine these parameters and, in contrast to refraction seismics, especially those of low velocity layers and the S-veloctities of all near surface layers. Using both standard P-wave refraction seismics and surface wave methods, only a few changes in the refraction field layout are needed to get high quality information about the lithostructural parameters of the near surface layers. A separate S-wave refraction survey is unnecessary.