Comments (1)
bernard-giroux
commented on June 2, 2024
Hi, This is a known limitation of the approach, especially for velocity model with strong variations. The solution is to extend the mesh to have a buffer zone around the receivers. Another possibility is to use the SPM algorithm, which does not rely on tracing the raypaths from the travel time gradient (please see the paper by Nasr in Geophysical Prospecting (2020) for the details(.
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