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| Format: | Artículo científico |
| Language: | en |
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Universidad Nacional Autónoma de México
2007
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| Online Access: | https://www.redalyc.org/articulo.oa?id=56846303 |
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| _version_ | 1866585799070318592 |
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| author | Fidel Reyes-Ramos |
| author_facet | Fidel Reyes-Ramos |
| contents | Enhancing C2 and C3 coherency resolutions through optimizing semblance-based functions Fidel Reyes-Ramos J.O. Campos-Enríquez Ciencias de la Tierra coherency apparent dips Seismic attributes numerical optimization Apparent dips from 3-D refl ectors are calculated by maximizing the semblance-based coherency (C2) by numericaloptimization techniques. This maximization was done by means of searching through a tessellation of the apparent dips domain,and by optimization algorithms. We applied the simplex and Levenberg-Marquardt, whose performance was compared withthose from the direct search techniques. According to numerical experiments with real data, the simplex algorithm enables notjust important computing time savings, but provides the highest values from the objective function under all circumstances. Thisresult implies that simplex achieves the maximization process more effi ciently, while the other analyzed techniques convergetowards the solution region but fail attaining the maxima. This result translates into a better contrast bettween coherent andnon coherent features which implies higher resolution. The Levenberg-Marquardt algorithm provides the lowest values for thecoherency. These results also found application to the calculation from normal C3 coherency (eigenstructure). This is achievedby slanting the traces with the apparent dips, previously obtained by optimizing the C2 slanted semblance with the simplextechnique. The obtained dip corrected coherency show partially an enhanced resolution. 2007 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56846303 en http://www.redalyc.org/revista.oa?id=568 Geofísica Internacional application/pdf Universidad Nacional Autónoma de México Geofísica Internacional (México) Num.3 Vol.46 |
| format | Artículo científico |
| id | redalyc_56846303 |
| language | en |
| publishDate | 2007 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Enhancing C2 and C3 coherency resolutions through optimizing semblance-based functions Fidel Reyes-Ramos Ciencias de la Tierra coherency apparent dips Seismic attributes numerical optimization Enhancing C2 and C3 coherency resolutions through optimizing semblance-based functions Fidel Reyes-Ramos J.O. Campos-Enríquez Ciencias de la Tierra coherency apparent dips Seismic attributes numerical optimization Apparent dips from 3-D refl ectors are calculated by maximizing the semblance-based coherency (C2) by numericaloptimization techniques. This maximization was done by means of searching through a tessellation of the apparent dips domain,and by optimization algorithms. We applied the simplex and Levenberg-Marquardt, whose performance was compared withthose from the direct search techniques. According to numerical experiments with real data, the simplex algorithm enables notjust important computing time savings, but provides the highest values from the objective function under all circumstances. Thisresult implies that simplex achieves the maximization process more effi ciently, while the other analyzed techniques convergetowards the solution region but fail attaining the maxima. This result translates into a better contrast bettween coherent andnon coherent features which implies higher resolution. The Levenberg-Marquardt algorithm provides the lowest values for thecoherency. These results also found application to the calculation from normal C3 coherency (eigenstructure). This is achievedby slanting the traces with the apparent dips, previously obtained by optimizing the C2 slanted semblance with the simplextechnique. The obtained dip corrected coherency show partially an enhanced resolution. 2007 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56846303 en http://www.redalyc.org/revista.oa?id=568 Geofísica Internacional application/pdf Universidad Nacional Autónoma de México Geofísica Internacional (México) Num.3 Vol.46 |
| title | Enhancing C2 and C3 coherency resolutions through optimizing semblance-based functions |
| topic | Ciencias de la Tierra coherency apparent dips Seismic attributes numerical optimization |
| url | https://www.redalyc.org/articulo.oa?id=56846303 |