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Donna Shillington

@djshillington

Geophysicist at Northern Arizona University

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12.01.2025
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Latest posts by Donna Shillington @djshillington

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Extreme plate boundary localization promotes shallow earthquake slip at the Japan Trench The 2011 Mw9.1 Tohoku-oki earthquake is exceptional among great earthquakes for having peak slip of ~50-70 m on the shallowest portion of the plate boundary megathrust. Drill cores and geophysical log...

New article in Science by the #JTRACK science team, led by Jamie Kirkpatrick, on extreme localization of the plate boundary megathrust fault at the Japan Trench: www.science.org/doi/10.1126/... ⚒️

18.12.2025 23:13 👍 12 🔁 4 💬 0 📌 0
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Many congratulations to Patrick Chindandali, who successfully defended his MS last week and deposited the final version of his excellent thesis today! Congrats, Patrick!!!

12.12.2025 21:54 👍 1 🔁 0 💬 0 📌 0
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Our Introduction to Oceanography class took a 5-day field trip to The Ocean, visiting some spectacular spots near Big Sur and Monterey. Some major storm systems battered the coast while we were there, so the weather was.... epic. But so was the geology, biology and oceanography 🙂.

19.11.2025 18:11 👍 1 🔁 1 💬 0 📌 0
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Assistant Professor (multiple positions), Applications of Artificial Intelligence and Machine Learning (AI/ML) - Flagstaff, Arizona, United States Special Information This position is an on-site position which requires the incumbent to complete their work primarily at an NAU site, campus, or facility with or without accommodation. Opportunities...

Do you use AI/ML methods in your Earth and environmental science research? NAU is hiring multiple positions! Check it out and apply! careers.nau.edu/jobs/assista...

30.10.2025 21:34 👍 2 🔁 1 💬 0 📌 0
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Thousands rally in latest 'No Kings' protests across northern Arizona Thousands rallied in Flagstaff, Prescott Valley and at nearly a dozen other demonstrations against the Trump administration in northern Arizona communities this weekend.

Thousands rallied in Flagstaff, Prescott Valley and at nearly a dozen other demonstrations against the Trump administration across northern Arizona this weekend.

20.10.2025 23:15 👍 4 🔁 1 💬 0 📌 0
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A couple of SES undergrad and grad classes have recently ventured to the San Juan Mountains in Colorado to learn about fundamental geological processes that have shaped this spectacular range. The fall foliage wasn't bad either :)

07.10.2025 02:46 👍 3 🔁 1 💬 0 📌 0
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Fun afternoon of science on Saturday at the NAU open house in the Flagstaff Festival of Science! SES students and faculty showcased everything from volcanos and earthquakes to insects. Thanks to our amazing students for sharing their knowledge and to everyone who stopped by!

29.09.2025 03:53 👍 1 🔁 1 💬 0 📌 0
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Many congratulations to SES Prof @rengellia.bsky.social , who was awarded the prestigious @agu.org Asahiko Taira International Scientific Ocean Drilling Research Prize! www.agu.org/honors/taira

26.09.2025 17:26 👍 2 🔁 1 💬 0 📌 0
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Trump Administration Live Updates: President Says Broadcasters Risk Losing Licenses When Hosts Criticize Him

Not feeling like I live in the 'Land of the Free' these days...
www.nytimes.com/live/2025/09...

18.09.2025 21:51 👍 0 🔁 0 💬 0 📌 0
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Check out our new website to learn more about the exciting research and educational opportunities in our school! ses-nau.org

17.09.2025 00:35 👍 1 🔁 1 💬 0 📌 0
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New paper alert! Former SES PhD student Leah Marshall alongside 2 SES profs, 3 former SES undergrads and colleagues investigate 15,800 years of carbon accumulation and environmental change in an Arctic watershed using lake sediment cores. Check it out! doi.org/10.1080/1523...

05.09.2025 16:28 👍 3 🔁 2 💬 0 📌 0
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Check out this livestream talk later today by geologist extraordinaire, Lisa Thompson (AZGS) “Geology, Geochemistry, and Potential Origins of the Basin volcano-sedimentary lithium deposit, Kaiser Spring volcanic field, Arizona”. tinyurl.com/AGS-2Sept-Pr.... @azgeology.bsky.social

02.09.2025 22:42 👍 1 🔁 1 💬 0 📌 0
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Opinion | We Ran the C.D.C.: Kennedy Is Endangering Every American’s Health

We Ran the C.D.C.: Kennedy Is Endangering Every American’s Health www.nytimes.com/2025/09/01/o...

01.09.2025 20:28 👍 0 🔁 0 💬 0 📌 0
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Grad student Aubrey LaPlante publishes results of mapping that tracks variations in paleo earthquake surface ruptures in Eastern California #ECSZ #paleoseismology #EDMAP #AGeS #NAU_geology, #SES_publications, #SES_students @rengellia.bsky.social pubs.geoscienceworld.org/gsw/lithosph...

19.08.2025 19:08 👍 3 🔁 3 💬 0 📌 0
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SES PhD student Grace Ward has been participating in a research cruise in the Tonga-Samoa area to pick up ocean bottom seismometers that have been deployed on the seafloor for 20 months recording earthquakes. They picked them all up! #nau_geology #saloongeo sites.google.com/msu.edu/salo...

15.08.2025 19:38 👍 1 🔁 1 💬 0 📌 0

New paper alert! New research from former NAU PhD student Emerson Lynch, SES Prof @rengellia.bsky.social , and colleagues demonstrates that some upper plate faults in the Cascadia subduction zone are very active, with important earthquake hazards implications. Check it out! #nau_geology

18.08.2025 18:52 👍 5 🔁 2 💬 0 📌 0
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NAU SES scientists just finished 11 glorious days of lake coring and glacial geologic mapping around Turquoise Lake in Lake Clark National Park, western Alaska Range. Good weather, hard work, and epic landscapes => an unforgettable field season. #NAU_geology, #NAU_environsci, #NAU_climate

12.07.2025 00:06 👍 6 🔁 1 💬 0 📌 0

Myself, @kdmorell.bsky.social, @djshillington.bsky.social, and Rob Witter (USGS) used an SSA community grant to host an Alaska Subduction Zone workshop in conjunction with a USGS meeting in January. The community grants are a great option if you're looking to fund a workshop/training. ⚒️

04.06.2025 13:50 👍 6 🔁 1 💬 0 📌 0
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The budget bill passed by the house would dramatically increase the national debt because huge tax breaks for the wealthy will cost much more than 'savings' from cuts to essential programs Let's hope the senate has the sense to fix this.
www.cbpp.org/.../house-re....
www.nytimes.com/.../05/23/up...

30.05.2025 19:45 👍 1 🔁 0 💬 0 📌 0
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Exclusive: NSF faces radical shake-up as officials abolish its 37 divisions Changes seen as a response to presidential directives on what research to fund

The dismantling of US science continues....

09.05.2025 17:09 👍 0 🔁 0 💬 0 📌 0
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The end of spring semester brings the opportunity to learn about (and celebrate!) the amazing research being undertaken by our grad and undergrad students. MS and PhD defenses! UG research symposium! First year grad student research showcase! Our incredible students are doing incredible things.

09.05.2025 03:58 👍 2 🔁 1 💬 0 📌 0
NSF logo and NSF 75 Years of Discovery & Innovation text against a royal blue background

NSF logo and NSF 75 Years of Discovery & Innovation text against a royal blue background

🎉Thank you National Science Foundation, for all the #NSFfunded #seismological science you support, including the SAGE and GAGE facilities operated by @earthscope.org. Our current understanding of #earthquakes, #volcanoes and #geodesy research would not be possible without you. ⚒️ 🧪

09.05.2025 14:57 👍 25 🔁 9 💬 0 📌 0
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About EES The NSF Division of Equity for Excellence in STEM (EES) aims to provide opportunities for individuals from all backgrounds, especially those historically underrepresented in science and engineering.

NSF’s entire Division of Equity for Excellence in STEM (EDU/EES), which “aims to provide opportunities for individuals from all backgrounds to actively participate and excel in STEM disciplines” and some of it congressionally mandated, was just notified they will be RIFed. www.nsf.gov/edu/ees/about

09.05.2025 15:14 👍 61 🔁 57 💬 2 📌 6
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Today is NAU giving day! Please consider supporting SES with a donation. givingday.foundationnau.org/giving-day/1...

01.05.2025 15:50 👍 1 🔁 1 💬 0 📌 0
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May 1 is NAU's giving day, and we are raising funds for an endowed professorship in Paul Umhoefer's honor. Paul was an amazing scientist, dedicated educator, and remarkable human. If you (like me) were lucky enough to know Paul, please consider making a donation! @nau-ses.bsky.social

01.05.2025 04:29 👍 0 🔁 0 💬 0 📌 0

The National Academies Committee on Solid Earth Geophysics is hosting a meeting on Marine Geophysics on May 28. We have a great list of speakers/topics, so it should be a great meeting. Join us! www.nationalacademies.org/event/44626_...

01.05.2025 04:19 👍 3 🔁 0 💬 0 📌 0
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Join SES at the NAU Undergraduate Research Symposium on Friday, April 25 at the High Country Conference Center. Many fabulous SES students will be presenting exciting research results! #SES_students nau.edu/undergraduat...

24.04.2025 03:50 👍 1 🔁 1 💬 0 📌 0
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This is Tellen. She went to work with her human today. The only agenda item on her calendar is dropping toys in the hallway until someone plays with her. 14/10

12.03.2025 23:27 👍 16613 🔁 2062 💬 435 📌 244
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Trump 2.0: an assault on science anywhere is an assault on science everywhere US President Donald Trump is taking a wrecking ball to science and to international institutions. The global research community must take a stand against these attacks.

"It is hard to put into words the extent of the damage being done to the US research enterprise, which is of almost incalculable value to both the nation itself and the wider world." www.nature.com/articles/d41...

06.03.2025 16:06 👍 0 🔁 1 💬 0 📌 0
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AGU has joined a lawsuit challenging the firing of probationary employees at federal agencies.

These actions weaken science, harm public health & the environment, and threaten national security. 🧵 #StandWithScience

05.03.2025 23:25 👍 626 🔁 173 💬 10 📌 21