238: Unveiling the Earth's Secrets - The Completion of the U.S. Magnetotelluric Array
Seismic Soundoff17 Loka 2024

238: Unveiling the Earth's Secrets - The Completion of the U.S. Magnetotelluric Array

"The MTArray is changing how we explore for minerals and critical resources, and it’s paving the way for sustainable energy development." In this episode of Seismic Soundoff, host Andrew Geary speaks with Adam Schultz about completing the U.S. Magnetotelluric (MT) Array after 18 years. This groundbreaking project has mapped the electrical properties of the Earth’s crust across the contiguous United States. Adam explains how this geophysical method has evolved from pure science into a critical tool for protecting national infrastructure and identifying valuable resources. He shares insights into the unexpected challenges and major discoveries made while offering a bold call to action for the geophysics community to think bigger and push the boundaries of exploration. Listen to learn how the MTArray is shaping the future of geophysics and infrastructure resilience. KEY POINTS AND TAKEAWAYS > The USMTArray's Evolution: Originally part of the EarthScope program, the MTArray project became crucial for understanding power grid and national infrastructure risks, especially from space weather events. > Critical Infrastructure Protection: Data from the MTArray has helped power grid operators mitigate risks from geomagnetically induced currents, potentially preventing large-scale outages during extreme solar storms. > East Coast Vulnerabilities: The discovery of a sharp transition in the Earth's crust along the eastern U.S. revealed hidden vulnerabilities to geomagnetic storms, challenging previous assumptions about regional risk. > Surprising Challenges and Successes: The MTArray faced unexpected difficulties, especially in challenging environments like the Gulf Coast, but also saw breakthrough moments, including stunning data collected during a major solar storm. > A Call for Bold Exploration: Adam urges geophysicists to think bigger, use larger arrays, and embrace time-varying, 4D imaging to advance the field and apply geophysical techniques to real-world problems like sustainable energy development and critical mineral exploration. Editor's Note: Special thanks to Xiaolei Tu for recommending this episode. GUEST BIO Dr. Adam Schultz is a Professor of Geophysics at the College of Earth, Ocean & Atmospheric Science at Oregon State University. Adam led the 18-year effort to map the electrical properties of Earth’s crust and mantle across the contiguous United States. LINKS * Visit https://seg.org/podcasts/episode-238-unveiling-the-earths-secrets-the-completion-of-the-u-s-magnetotelluric-array/ for links to learn more about this project and Dr. Schultz. SHOW CREDITS Andrew Geary at TreasureMint hosted, edited, and produced this episode. The SEG podcast team comprises Jennifer Cobb, Kathy Gamble, and Ally McGinnis. If you have episode ideas or feedback for the show or want to sponsor a future episode, email the show at podcast@seg.org.

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#12: Full-waveform inversion

#12: Full-waveform inversion

Dr. Michal Malinowski, special section lead editor for Interpretation and Jyoti Behura, special section lead editor for The Leading Edge join Andrew Geary to discuss full-waveform inversion. Dr. Michal Malinowski is Associate Professor at the Institute of Geophysics at the Polish Academy of Sciences at Warsaw and head of the Seismic Imaging Team. Jyoti Behura is the Founder & CEO of Seismic Science LLC. Full show notes at http://seg.org/podcast.

2 Helmi 201725min

#11: Geophysical Electromagnetics - 2017 DISC

#11: Geophysical Electromagnetics - 2017 DISC

2017 Distinguished Instructor Doug Oldenburg, along with Lindsey Heagy, and Seogi Kang, join Andrew Geary to discuss the upcoming 2017 SEG DISC - Geophysical Electromagnetics Fundamentals and Applications. Dr. Doug Oldenburg is professor of Geophysics, director of the Geophysical Inversion Facility and a world leader in geophysical inversions. Throughout 2017 at locations around the world, Doug will cover applications of electromagnetic geophysics across mining, oil and gas, geotechnical, water and environmental industries. Lindsey Heagy and Seogi Kang, both PhD candidates at the Geophysical Inversion Facility at the University of British Columbia, will join Doug on the upcoming 2017 DISC tour. Register for DISC at http://seg.org/disc. If you enjoy the show, review us on iTunes (https://itunes.apple.com/us/podcast/seismic-soundoff/id1140626640?mt=2) – your review helps others find the show. * DISC 2017 course materials: http://disc2017.geosci.xyz/ * EM GeoSci: http://em.geosci.xyz/index.html * Stanley H. Ward and Gerald W. Hohmann - Electromagnetic Theory for Geophysical Applications: http://library.seg.org/doi/abs/10.1190/1.9781560802631.ch4 Full show notes at http://seg.org/podcast.

24 Tammi 201727min

#10: Remote sensing on Mars

#10: Remote sensing on Mars

Fritz Foss and Nathaniel Putzig - co-authors of January's The Leading Edge cover article - discuss "3D imaging of Mars’ polar ice caps using orbital radar data." Fritz Foss has worked in various capacities in the oil & gas exploration business for the past 23 years. He co-founded Unified GeoSystems in 2009. Nathaniel Putzig is a Senior Scientist at the Planetary Science Institute. He's worked 14 years with terrestrial active-source seismic data in academia and industry. Presently, he serves as the US/Deputy Team Leader for the Shallow Radar sounder on the Mars Reconnaissance Orbiter. Please subscribe to Seismic Soundoff on iTunes or wherever you listen to podcasts. If you enjoy the show, review us on iTunes – your review helps others find the show. Full show notes at seg.org/podcast.

18 Tammi 201727min

#0: Introduction to Seismic Soundoff (podcast trailer)

#0: Introduction to Seismic Soundoff (podcast trailer)

Listen to a brief introduction of SEG's first podcast - Seismic Soundoff - with highlights from its first twelve episodes. * Listen to exclusive interviews with SEG authors, award winners, and geophysics legends. * Hear the inside stories behind the latest technology and hottest topics of the day. * Gain behind the scenes access to the projects of Geoscientists Without Borders®. New episodes monthly. Learn more at https://seg.org/podcast.

17 Tammi 20172min

#9: Mentoring geoscience leaders

#9: Mentoring geoscience leaders

Geoscience leaders, Andréa Darrh, Dr. Esther Babcock, and Dr. John Bradford, join us to discuss the process and importance of mentoring in their careers and beyond. How can SEG complement the relationships forged on university campuses, within industry, and in the field? Show notes at seg.org/podcast.

28 Joulu 201645min

#8: Geophysics for non-technical professionals

#8: Geophysics for non-technical professionals

Norm Hyne, lecturer and past chair of The University of Tulsa Geology and Geophysics Department, explores applied geophysics from a non-technical professional’s perspective. Listeners, we want to hear from you: Why did you choose geophysics? What do you love about the science and the work you do? Email us at podcast@seg.org or leave a message at country code +1 918-497-4627. Editor's note: During our exchange, Norm incorrectly referred to Geoscientists Without Borders as Geophysicists Without Borders. To learn more visit http://seg.org/gwb. Show notes at http://seg.org/podcast.

21 Marras 201635min

#7: John Bradford - State of the Society

#7: John Bradford - State of the Society

John Bradford, president of SEG, gave his State of the Society Address at the 86th Annual Meeting in Dallas in October 2016. Dorsey Morrow, SEG Executive Director, opened the session and introduced Bradford. Sponsor The SEG Wiki is home to hundreds of biographies of key geoscientists, geophysical tutorials, and core content from the science of applied geophysics. Visit http://wiki.seg.org to learn how you can grow the world’s first online, geophysics encyclopedia. Learn more at http://seg.org/podcast.

24 Loka 201652min

#6: Lev Vernik - Seismic Petrophysics

#6: Lev Vernik - Seismic Petrophysics

Lev Vernik discusses his new book Seismic Petrophysics in Quantitative Interpretation. Learn more at http://shop.seg.org/Online-Store/Product-Detail/ProductId/15563143. Early praise for his book says it strikes "the right balance between the theory and practical application...[making] this manuscript unique among other publications (Kostia Azbel - Shell) and that Dr. Vernik "has outlined a workflow that elegantly handles the complexities of the subject while maintaining a practical point of view (Marco Perez - Apache)." Join Dr. Vernik, and other authors of new SEG books, at the Dallas Annual Meeting for a meet and greet - Monday, 17 October from 2:40 to 3:20 p.m. and Tuesday, 18 October from 9:40 to 10:20 a.m. - in the Wiki Meetup area located in the SEG Pavilion, Booth 120. For the latest details on the SEG Book Mart and meet and greet visit http://seg.org/Events/Annual-Meeting/About/SEG-Book-Mart. Sponsor The SEG Wiki is home to hundreds of biographies of key geoscientists, geophysical tutorials, and core content from the science of applied geophysics. Visit wiki.seg.org to learn how you can grow the world’s first online, geophysics encyclopedia.

10 Loka 201621min

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