Multiple attenuation through independent component analysis: a case study
Carlos Alberto da Costa Filho, Leonardo Tomazeli Duarte, Martin Tygel · 2013
This paper discusses applications of Independent Component Analysis (ICA) to the removal of multiple reflections from seismic data. In the special case of surface-related multiples, the adaptive Surface Related Multiple Elimination (SRME) algorithm has shown to be an effective tool for such endeavor. Nonetheless, it uses an energy-minimizing criterion to remove the predicted multiples, which can incur in loss of primary events. This paper explores the use of another criterion, based on the statistical independence of the primary and multiple events to execute the subtraction. This criterion is expressed through the use of ICA. It is shown through two simple illustrative examples that the proposed method has the potential of improving the removal of the multiples, while maintaining primaries.