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File:Vol.6 F1.17.jpg
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Velocity analysis (on the right) of a single common midpoint gather (on the left). The gather is analyzed over narrow time windows for the values of semblance (or some other measure of similarity) according to a range of stacking velocities. The contours indicate the level of semblance, and the processing geophysicist selects the values deemed to be because of primary reflections and not events reflected multiple times. The direct wave (straight-line arrivals seen at the upper edge of the arrivals on the seismic gather) are not considered in the analysis (after Yilmaz47).
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 15:35, 6 September 2013 | | 1,286 × 1,938 (493 KB) | Glenda Smith (Glendasmith) (talk | contribs) |
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