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Next: Conclusions Up: Liu et al.: VD-seislet Previous: Field Data Examples


What are the limitations of the proposed algorithms? First, VD-seislet transform may have difficulties in dealing with nonhyperbolic moveouts. However, it is possible to extend it to nonhyperbolic moveout equation (Casasanta and Fomel, 2011), which would provide the possibility to handle large offsets and anisotropy (Fomel and Grechka, 2001). Compared with PWD-seislet transform, VD-seislet transform provides more accurate representation for seismic events with class II AVO anomalies (Rutherford and Williams, 1989) that cause seismic amplitudes to go through a polarity reversal by using advanced velocity analysis, e.g., AB semblance (Fomel, 2009b; Sarkar et al., 2001,2002). Finally, the proposed method works best for the relatively deep water situations where primaries and multiples are well separated.