Rayfract 3.1



Size:6.9 MB

Date Added:03 June, 2012



Rayfract® seismic refraction tomography software allows reliable imaging of subsurface velocity structure including faults, strong lateral velocity variation and other velocity anomalies. Smooth inversion tomographic method is based on physically meaningful modeling of seismic first break energy refraction, transmission and diffraction. Both P-wave and S-wave propagation is modeled with wave paths (also known as Fresnel volumes) instead of conventional rays. This increases the numerical robustness of the method. A smooth minimum-structure 1D initial model is determined automatically directly from the seismic refraction traveltime data, by horizontally averaging Delta-t-V (improved Wiechert-Herglotz) method 1D velocity-depth profiles along the seismic line. This procedure delivers reliable smoothed models even in case of velocity inversions. The initial model is then refined with true 2D WET Wavepath Eikonal Traveltime tomography. No need to map traveltimes to refractors.

Systems: Windows

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