Welcome to the SEG Wiki

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A living encyclopedia for applied geophysics • about the wiki4,676 articles • 24 active users

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About the SEG Wiki

The goal of the SEG Wiki is: to expand the world’s knowledge of applied geophysics, to provide further details of ("layer") the science itself, and to engage emerging professionals in the field. Robert E. Sheriff's Encyclopedic Dictionary of Applied Geophysics, fourth edition and Oz Yilmaz's Seismic Data Analysis seeded the SEG Wiki with its initial content. We encourage you to read, edit, and enhance the SEG Wiki. Add your layer to the science of applied geophysics today.

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Take your contributions to the next level - learn more about the 2015 wiki awards!

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Wiki video help series

This help series aims to provide you with the skills necessary to start contributing. We have completed help videos on launching your own user page, growing articles in our biographies section, and advanced tutorials on improving Sheriff's Dictionary. Future videos are planned, so bookmark the playlist!

TLE tutorials

The SEG publishes geophysical tutorials bimonthly in the The Leading Edge. The eighth tutorial, Seismic petrophysics: Part 1, was recently published in the April 2015 edition.

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 Poisson's ratio, derivation of reflection coefficient, derivation of Snell's Law, correlation procedures in building a depth migration velocity model, interpretation work flows, and visual estimation of wavelet phase are now available.

Seismic Data Analysis is here!

Oz Yilmaz’s renowned Seismic Data Analysis is now fully available as an open access book and freely available to read, edit, and grow through your contributions!


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.

Please help us develop our women in geoscience biographies.


Wiki chat

Our fifth #SEGWikiChat was held on Tuesday, April 28. Karl Schleicher, Senior Research Fellow at UT Austin and who helps curate open data, and Lisa Schleicher Walsh, geoscientist at the US Nuclear Regulatory Commission, were our featured guests. Check out the archives at the SEG Wiki channel on Muut. The next chat will be held on Tuesday, June 30, 2015, 10-11:00am CST.


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