High resolution seismic refraction imaging of plate boundary structures by full waveform inversion off western Kii Peninsula, Nankai Trough

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As planned, I have obtained the starting model for full waveform inversion based on the first arrival travel time tomography. There are several things need to be prepared for application of the waveform inversion. First of all, the seismic data need to be preprocessed. Low signal to noise ratio of the original data bring in difficulties to the inversion and may cause artifacts. So I denoised the data properly. Another issue is the source wavelet for data modeling, which is a key for the inversion. I have tested several method to build up the source wavelet, and did the forward modeling by use each of them, respectively. After comparison, I chose the best one which can predict the first arrivals properly. After that, I need to design a strategy and run the inversion tests.