Automatic traveltime picking using local time-frequency maps

Christos Saragiotis, Tariq Alkhalifah, King Abdullah, Sergey Fomel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The arrival times of distinct and sufficiently concentrated signals can be computed using Fourier transforms. In real seismograms, however, signals are far from distinct. We use local time-frequency maps of the seismograms and its frequency derivatives to obtain frequency-dependent (instantaneous) traveltimes. A smooth division is utilized to control the resolution of the instantaneous traveltimes to allow for a trade-off between resolution and stability. We average these traveltimes over the frequency band which is data-dependent. The resulting traveltime attribute is used to isolate different signals in seismic traces. We demonstrate the effectiveness of this automatic method for picking arrivals by applying it on synthetic and real data.
Original languageEnglish (US)
Title of host publicationSociety of Exploration Geophysicists International Exposition and 81st Annual Meeting 2011, SEG 2011
PublisherSociety of Exploration Geophysicistsweb@seg.org
Pages1648-1652
Number of pages5
ISBN (Print)9781618391841
StatePublished - Jan 1 2011
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2023-09-21

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