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An Encyclopedia for Applied Geophysics • about the wiki4,462 articles • 12 active users

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About the SEG Wiki

The goal of the SEG Wiki is to: expand the world’s knowledge of geophysics, further layer the science, and engage emerging professionals in the field. Robert E. Sheriff's Encyclopedic Dictionary of Applied Geophysics, fourth edition seeded the SEG Wiki with its initial content. While this information originated in a tried and true print source, all articles in the SEG Wiki can and are encouraged to be modified, updated, and improved by members. We encourage you to read and enhance the SEG Wiki to the best of your knowledge. Add your layer to the science of geophysics today.

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Seismic Data Analysis is here!

It is here! Oz Yilmaz’s renowned Seismic Data Analysis is now fully available as an open access book. With its launch, SEG’s two best-selling books – Seismic Data Analysis and Sheriff’s Encyclopedia Dictionary of Applied Geophysics – are freely available to read, edit, and grow through your contributions!

Key concepts from SEG books

SEG Wiki has been working closely with Don Herron to create wiki articles based on Don’s 2011 book First Steps in Seismic Interpretation. Don has condensed, expanded, and paraphrased key concepts from his book for the wiki. Articles on derivation of Snell's Law, derivation of Poisson's ratio, correlation procedures in building a depth migration velocity model, interpretation work flows, and visual estimation of wavelet phase are now available. Contact wiki‐at‐ to assist SEG in this project.

TLE tutorials

The SEG is publishing an increasing number of geophysical tutorials. The fifth tutorial, Phase and the Hilbert transform, was recently published in the October 2014 edition of The Leading Edge.


Many of the pioneers in the development of exploration geophysics reside in the Biographies. Add your insight and knowledge of these trailblazers for the next generation.



Wiki chat

Our third #SEGWikiChat will be held Tuesday, December 16. Join us for the third installment on December 16!

  • Special Guests: Cecilia Whitehurst, AAPG Wiki Specialist --> @AAPGwiki; Tayo Ombosebi, Ph.D. candidate - Petroleum & Geological Engineering, Mewbourne School of Petroleum and Geological Engineering, The University of Oklahoma
  • Date and time: Tuesday, 16 December 2014, 10:00-11:00am CST
  • Place: SEG Wiki channel on Muut
  • Audience: All SEG members, and the greater geophysics community

All questions are welcome. Cannot make the chat? Email your questions to


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