Adaptive Traveltime Tomography Using Wavelets

We have implemented a finite-difference algorithm for image-wave time-remigration in FORTRAN~90, and studied its theoretical properties in detail. For a numberof synthetic models, numerical experiments have been realized. For these examples, we obtained perfect agreement between the theoretical predictions and numerical results. The examples also prove the computational efficiency of the algorithm. An example using ground-penetrating-radar (GPR) data demonstrates how image-wave remigration can be used to estimate a model of the medium velocity.