Inversion of seismic refraction data in planar dipping structure
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Abstract
A new method is presented for the direct inversion of seismic refraction data in dipping planar structure. Three recording geometries, each consisting of two common-shot profiles, are considered: reversed, split, and roll-along profiles. Inversion is achieved via slant stacking the common-shot wavefield to obtain a delay time—slowness (tau—p) wavefield. The tau—p curves from two shotpoints describing the critical raypath of refracted and post-critically reflected arrivals are automatically picked using coherency measurements and the two curves are jointly used to calculate velocity and dip of isovelocity lines iteratively, thereby obtaining the final two-dimensional velocity model.
This procedure has been successfully applied to synthetic seismograms calculated for a dipping structure and to field data from central California. The results indicate that direct inversion of closely-spaced refraction/wide-aperture reflection data can practically be achieved in laterally inhomogeneous structures.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Inversion of seismic refraction data in planar dipping structure |
| Series title | Geophysical Journal International |
| DOI | 10.1111/j.1365-246X.1985.tb05129.x |
| Volume | 82 |
| Issue | 1 |
| Year Published | 1985 |
| Language | Enlgish |
| Publisher | Oxford Academic |
| Contributing office(s) | Earthquake Science Center |
| Description | 23 p. |
| First page | 81 |
| Last page | 103 |
| Google Analytic Metrics | Metrics page |