P165 SURFACE-WAVE PROPAGATION IN TWO- DIMENSIONAL VELOCITY MODELS AND ITS DISPERSION CURVES 1 Abstract We have studied surface wave propagation in two-dimensional velocity models and its dispersion curves. Several numerical modeling of surface waves were performed in order to study surface wave propagation characters in two-dimensional velocity models. Synthetic waveforms were calculated by a twodimensional finite-difference method. Dispersion curves for synthetic data were obtained through the cross correlation method and the multi-channel analysis of surface waves. A non-linear least square inversion was applied to dispersion curves in order to obtain S-wave velocity models. The results indicate that the surface waves


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