Seismic tomography and migration without ray tracing

Philippe O. Ecoublet; Satish C. Singh; Geoffrey M. Jackson; Chris H. Chapman

doi:10.1117/12.218507

1 September 1995 Seismic tomography and migration without ray tracing

Philippe O. Ecoublet; Satish C. Singh; Geoffrey M. Jackson; Chris H. Chapman;

Author Affiliations +

Proceedings Volume 2571, Mathematical Methods in Geophysical Imaging III; (1995) https://doi.org/10.1117/12.218507
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

In this paper, we present a new approach for travel-time tomography in which ray tracing is not required. Analytical expressions for the travel-time between any two points and the slowness in a 2D inhomogeneous medium are obtained by minimizing the difference between the analytical travel-time function and observed travel-times. The analytical functions satisfy the Eikonal equation everywhere in the medium, and hence provide a unique solution for the slowness. The computation of travel-times using the analytical function can be much faster than that using ray tracing for pre-stack migration. Furthermore, the computation can be carried out during the migration which will avoid storing of the travel-time field and increase the efficiency of pre-stack migration.

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Philippe O. Ecoublet, Satish C. Singh, Geoffrey M. Jackson, Chris H. Chapman, "Seismic tomography and migration without ray tracing", Proc. SPIE 2571, Mathematical Methods in Geophysical Imaging III, (1 September 1995); doi: 10.1117/12.218507; https://doi.org/10.1117/12.218507

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