Generating an image of dispersive energy by frequency decomposition and slant stacking
Pure and Applied Geophysics
By: J. Xia, Y. Xu, and R. D. Miller
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Abstract
We present a new algorithm for calculating an image of dispersive energy in the frequency-velocity (f-v) domain. The frequency decomposition is first applied to a shot gather in the offset-time domain to stretch impulsive data into pseudo-vibroseis data or frequency-swept data. Because there is a deterministic relationship between frequency and time in a sweep used in the frequency decomposition, the first step theoretically completes the transform from time to frequency. The slant stacking is then performed on the frequency-swept data to complete the transform from offset to velocity. This simple two-step algorithm generates an image of dispersive energy in the f-v domain. The straightforward transform only uses offset information of data so that this algorithm can be applied to data acquired with arbitrary geophone-acquisition geometry. Examples of synthetic and real-world data demonstrate that this algorithm generates accurate images of dispersive energy of the fundamental as well as higher modes. ?? Birkha??user Verlag, Basel, 2007.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Generating an image of dispersive energy by frequency decomposition and slant stacking |
| Series title | Pure and Applied Geophysics |
| DOI | 10.1007/s00024-007-0204-9 |
| Volume | 164 |
| Issue | 5 |
| Year Published | 2007 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Pure and Applied Geophysics |
| First page | 941 |
| Last page | 956 |
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