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SEG Technical Program Expanded Abstracts 1996
We identify a few unique issues that are important for performing a nonlinear refraction traveltime tomography effectively. These include accuracy of traveltime and raypath calculation for a turning ray and physical information in a refraction traveltime curve. Consequently, we develop a shortest path raytracing method with an optimized node distribution that can accurately calculate refraction traveltimes and raypaths in any velocity model. We find that minimizing misfit of refractiondoi:10.1190/1.1826562 fatcat:g5qtknepcjdw7iskv5tm7j5l6q