Abstract

Though lot of theoretical studies has been carried out, still we lack in understanding the state-of-the-art full waveform tomography (FWT) tool. To know the intricacies involved in FWT, we pursue a theoretical study for a realistic earth model derived from the well log data. We generate the wide-angle ocean bottom seismic (OBS) data based on visco-elastic finite difference modeling and perform the FWT in acoustic sense in deriving the best possible result. From different choices of multi-scale imaging in frequency domain, we observe that the frequency overlapping is more suitable in mitigating the highly non-linearity of the tomographic inversion.