Abstract
An interferometric form of Fermat's principle is derived that allows for high-resolution estimation of the velocity distribution between deep interfaces. The data consist of reflection traveltimes from two deeply buried interfaces A and B recorded by sources and caused by receivers at the surface. Fermat's interferometric principle is then used to kinematically redatum the surface sources and receivers to interface A so that the associated reflection times correspond to localized transit times between the A and B interfaces. The velocity model above interface A does not need to be known, so the distorting effects of the overburden and statics are eliminated by this target-oriented approach. Interferometric target-oriented tomography promises to enhance the resolution of whole-earth and exploration tomograms.
| Original language | English (US) |
|---|---|
| Pages (from-to) | U47-U50 |
| Journal | Geophysics |
| Volume | 70 |
| Issue number | 4 |
| DOIs | |
| State | Published - 2005 |
| Externally published | Yes |
ASJC Scopus subject areas
- Geochemistry and Petrology