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Generating an image of dispersive energy by frequency decomposition and slant stacking

Pure and Applied Geophysics

By:
, ,
DOI: 10.1007/s00024-007-0204-9

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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.

Additional Publication Details

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
Number of Pages:
16