Comparison of Refraction and Diving Wave Tomography Statics Solution along a Regional Seismic Profile in SE Poland

Abstract

Static corrections determination is one of the main problems seismic data processing on land. Typically, static solution is obtained using refracted arrivals to build near-surface velocity model. Sometimes it is augmented by an uphole survey. However, good refraction solution can be obtained, when a clear refractors exist in the subsurface. In case of complicated geology, like dipping, thrust-and-fold belt structures, refraction static solution can be difficult to obtain. In such case, diving waves can be inverted using tomographic approach to obtain so-called tomostatics (e.g. Zhu et al. 1992). Here we compare refraction and tomographic static solutions calculated for a deep regional profile located in SE Poland. It provides a good benchmark for comparing various static solution as it crosses both relatively simple and complex geological strata.