Automatic traveltime picking using local time-frequency maps

Christos Saragiotis, Tariq Ali Alkhalifah, Sergey B. Fomel

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

The arrival times of distinct and sufficiently concentrated signals can be computed using Fourier transforms. In real seis- mograms, 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. © 2011 Society of Exploration Geophysicists.
Original languageEnglish (US)
Pages (from-to)1648-1652
Number of pages5
JournalSEG Technical Program Expanded Abstracts 2011
Volume30
Issue number1
DOIs
StatePublished - May 25 2012

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Geophysics

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