USING THE KARHUNEN-LOÈVE TRANSFORM TO SUPPRESS GROUND ROLL IN SEISMIC DATA
ABSTRACTThe Sacchi's algorithm (2002) based on the Karhunen-Loève (K-L) Transform was modified and implemented to suppress Ground Roll without distortion of the reflection signals, it provided better results than conventional techniques for noise removal like f-k, High-Pass and Band Pass Filter...
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| Format: | Article |
| Language: | English |
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Universidad Nacional de Colombia
2005-08-01
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| Series: | Earth Sciences Research Journal |
| Online Access: | http://www.revistas.unal.edu.co/index.php/esrj/article/view/21247 |
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| author | Kazmierczak Thaís de Souza Castillo López Luís Gómez Londoño Ernesto |
| author_facet | Kazmierczak Thaís de Souza Castillo López Luís Gómez Londoño Ernesto |
| author_sort | Kazmierczak Thaís de Souza |
| collection | DOAJ |
| description | ABSTRACTThe Sacchi's algorithm (2002) based on the Karhunen-Loève (K-L) Transform was modified and implemented to suppress Ground Roll without distortion of the reflection signals, it provided better results than conventional techniques for noise removal like f-k, High-Pass and Band Pass Filters. The K-L Transform is well known in other fields as image processing (Levy and Linderbaurn, 2000), face, iris and fingerprint identification. A seismic section is an image of subsurface where the K-L can be useful in seismic processing because spatially uncorrelated signals can be removed providing a clear and coherent image. The algorithm was applied to seismic data generated with hammer, thumper and explosive sources. Conventional processing flows were used, but one replaced filters with K-L Transform, providing stacked sections. The K-L Transform recovers better the reflector amplitudes when compared with others filters, also it removes refractions that cause unreal shallow events and increases the lateral coherence of seismic events showing a more interpretable geology. |
| format | Article |
| id | doaj-art-19eca3a6ad9a4977afc8987baa75f155 |
| institution | OA Journals |
| issn | 1794-6190 |
| language | English |
| publishDate | 2005-08-01 |
| publisher | Universidad Nacional de Colombia |
| record_format | Article |
| series | Earth Sciences Research Journal |
| spelling | doaj-art-19eca3a6ad9a4977afc8987baa75f1552025-08-20T02:28:59ZengUniversidad Nacional de ColombiaEarth Sciences Research Journal1794-61902005-08-0192139147USING THE KARHUNEN-LOÈVE TRANSFORM TO SUPPRESS GROUND ROLL IN SEISMIC DATAKazmierczak Thaís de SouzaCastillo López LuísGómez Londoño ErnestoABSTRACTThe Sacchi's algorithm (2002) based on the Karhunen-Loève (K-L) Transform was modified and implemented to suppress Ground Roll without distortion of the reflection signals, it provided better results than conventional techniques for noise removal like f-k, High-Pass and Band Pass Filters. The K-L Transform is well known in other fields as image processing (Levy and Linderbaurn, 2000), face, iris and fingerprint identification. A seismic section is an image of subsurface where the K-L can be useful in seismic processing because spatially uncorrelated signals can be removed providing a clear and coherent image. The algorithm was applied to seismic data generated with hammer, thumper and explosive sources. Conventional processing flows were used, but one replaced filters with K-L Transform, providing stacked sections. The K-L Transform recovers better the reflector amplitudes when compared with others filters, also it removes refractions that cause unreal shallow events and increases the lateral coherence of seismic events showing a more interpretable geology.http://www.revistas.unal.edu.co/index.php/esrj/article/view/21247 |
| spellingShingle | Kazmierczak Thaís de Souza Castillo López Luís Gómez Londoño Ernesto USING THE KARHUNEN-LOÈVE TRANSFORM TO SUPPRESS GROUND ROLL IN SEISMIC DATA Earth Sciences Research Journal |
| title | USING THE KARHUNEN-LOÈVE TRANSFORM TO SUPPRESS GROUND ROLL IN SEISMIC DATA |
| title_full | USING THE KARHUNEN-LOÈVE TRANSFORM TO SUPPRESS GROUND ROLL IN SEISMIC DATA |
| title_fullStr | USING THE KARHUNEN-LOÈVE TRANSFORM TO SUPPRESS GROUND ROLL IN SEISMIC DATA |
| title_full_unstemmed | USING THE KARHUNEN-LOÈVE TRANSFORM TO SUPPRESS GROUND ROLL IN SEISMIC DATA |
| title_short | USING THE KARHUNEN-LOÈVE TRANSFORM TO SUPPRESS GROUND ROLL IN SEISMIC DATA |
| title_sort | using the karhunen loeve transform to suppress ground roll in seismic data |
| url | http://www.revistas.unal.edu.co/index.php/esrj/article/view/21247 |
| work_keys_str_mv | AT kazmierczakthaisdesouza usingthekarhunenloevetransformtosuppressgroundrollinseismicdata AT castillolopezluis usingthekarhunenloevetransformtosuppressgroundrollinseismicdata AT gomezlondonoernesto usingthekarhunenloevetransformtosuppressgroundrollinseismicdata |