Differential delay-time refraction tomography

Details Differential delay-time refraction tomography Differential delay-time refraction tomography

G - Physics

01

V

G01V 1/36 (2006.01)

Patent

CA 2318627

A new method for refraction tomography is provided that uses differential delay times. Different types of refracted waves including head waves and diving waves are inverted. First, traveltime/offset functions for station in the seismic survey are estimated from first-arrival picks. Next, the traveltime/offset functions are transformed into velocity/depth functions to make up a near-surface model. Then, long-period statics are calculated using the derived near-surface model. Finally, short-period statics are estimated by a surface-consistent decomposition of the traveltime residuals.

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