Determination of Dips and Depths of Near Surface Layers by Radon Transform

The refracted arrivals on seismic shot records have long been recognized as an efficient tool for the computation of detailed near-surface information. In this paper, a new concept of refraction static, which is based on the Radon transform and avoids the tedious process of picking first arrival times, is proposed. This method is particularly suitable when a rough near-surface problem necessitates the utilization of numerous shallow refraction data for the one reflector case. Quasi-linearity of refractors and a constant velocity medium are assumed within the shooting range. Synthetic and real cases have been tested to evaluate the performance of the method. The result is revealed to be satisfactory. Comparison of the synthetic model with the results obtained through the Radon transform reveals a very good accuracy for the proposed method.