Iterative supervirtual refraction interferometry

Ola Al-Hagan, Sherif M. Hanafy, Gerard T. Schuster

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

In refraction tomography, the low signal-to-noise ratio (S/N) can be a major obstacle in picking the first-break arrivals at the far-offset receivers. To increase the S/N, we evaluated iterative supervirtual refraction interferometry (ISVI), which is an extension of the supervirtual refraction interferometry method. In this method, supervirtual traces are computed and then iteratively reused to generate supervirtual traces with a higher S/N. Our empirical results with both synthetic and field data revealed that ISVI can significantly boost up the S/N of far-offset traces. The drawback is that using refraction events from more than one refractor can introduce unacceptable artifacts into the final traveltime versus offset curve. This problem can be avoided by careful windowing of refraction events.
Original languageEnglish (US)
Pages (from-to)Q21-Q30
Number of pages1
JournalGEOPHYSICS
Volume79
Issue number3
DOIs
StatePublished - May 2 2014

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