Nice story in the Seismological Society of America (SSA) News on the Paul Andrew Spudich Fund supporting Jeena Yun and Baoning Wu’s travel to Japan, to attend the slow-to-fast workshop. I enjoyed the featured “happy” Easter egg in Spudich & Frazer (1984). www.seismosoc.org/news/paul-an...

🌍 Simulating centuries of #earthquakes: the #Tandem code brings seismic cycles to #supercomputers @inseismoland.bsky.social explains how this code is advancing our understanding of earthquake physics and supporting the path toward exascale-ready Earth simulations 📹 youtu.be/DbMi7GL4zA8

Reconstructing fault surfaces from volumetric data is a longstanding challenge in geosciences. In this G3 paper led by Anthony Jourdon and Dave May (with Jorge Nicolas Hayek Valencia, and myself) we present a novel method that converts volumetric shear‐zone fields from 3D long‐term geodynamic...

"At the Shallow Frontier: Faulting, Deformation, and Tsunamigenesis in Cascadia" - Save the date! CRESCENT DET Topical Workshop on May 28 & 29, 2026 at the University of Oregon in Eugene cascadiaquakes.org/2025/01/20/d...

Do Coupled Megathrusts Rupture? In our new preprint, Bar Oryan and I present the first global analysis of the relationship between kinematic geodetic coupling and earthquake slip models across 12 subduction zones and 61 megathrust earthquakes. eartharxiv.org/repository/v...

Join us as a PostDoc! Green Foundation Postdoctoral Appointments in Geophysics Application Deadline: Sunday, Nov 9, 2025 at 11:59pm (Pacific Time) Further Details: igpp.ucsd.edu/about/green-... Apply here: apol-recruit.ucsd.edu/JPF04363

Preprint Alert! In a true team effort we ask: could aspects of the Myanmar earthquake have been predicted? T. Ulrich, X. Zou, M. Marchandon, N. Schliwa, F. Tan, A.-A. Gabriel, W. Fan, P. Shearer, M. Thant, T. Zin Htet Tin, E. Lindsey, Y. Fialko: www.researchsquare.com/article/rs-7...

Grateful to the organizers of the first Artificial Intelligence and Digital Twins for Earth Systems workshop (AIDT4ES, aidt4es.usacm.org) for the invitation to deliver a keynote talk. I enjoyed the discussion and interesting talks, as well as to connect with collaborators, colleagues, & friends :)

New JGR paper led by Zihua Niu! Evolving off-fault brittle damage alters elastic moduli between 3D fault step-overs, enabling dynamic rupture to cascade onto neighboring faults with rheology-dependent delay times and radiates isotropic high-frequency waves. doi.org/10.1029/2025...

Awesome start to the NNW-MTMOD meeting on fault dynamics and seismic hazard in St Arnaud. Also Captin Underpants on white board (why?)

Can’t every week be a hackathon week? Thanks to all Tandem developers for a productive and inspiring week, collaborative coding, bug fixing, proposal and paper writing, and inspiring views included. Grateful to @scrippsocean.bsky.social IGPP Green Foundation, and Quakeworx for the support and to the

Great to speak about how last week's tsunami impacted San Diego, just half a foot at La Jolla Shores (and yes, I’ll be keeping a "camera-ready jacket" in my office from now on). Now is a good moment to review tsunami evacuation routes and flood zones in your area! fox5sandiego.com/news/local-n...

Looks like a small swarm in the Fontana trend. This M4.2 had a few foreshcoks including a M3.0. The Fontana trend is a NE-striking lineation of earthquakes under the sediments of the San Bernardino Vslley. We believe it is one of the left-lateral striking faults that are south of the San Gabriels.

Did you feel the M4.4 earthquake near Muscoy, CA, a few minutes ago? The ShakeAlert earthquake early warning system was activated. ShakeAlert estimated the magnitude at M4.7, which meets the criteria for issuing alerts to cell phones in the area near the earthquake.

⚠️ Tsunamis can be a series of powerful surges capable of creating dangerous currents for hours. Stay alert and keep away from the beach and shoreline until officials give the all-clear. 🌏 USGS Earthquake information: on.doi.gov/4faXyBW 🌊 NOAA Tsunami information: bit.ly/49qPWZ5

"This was the largest earthquake since 2011, the sixth largest on record globally," said Alice Gabriel (@inseismoland.bsky.social), a seismologist with @igpp.bsky.social at Scripps Oceanography. "The first tsunami wave reached La Jolla Shores around 1:45 a.m., registering less than half a foot."

🚨 Tsunami Update 🚨 Last night's #tsunami advisory following a magnitude 8.8 earthquake off Russia's Kamchatka Peninsula has been lifted, according to the U.S. Geological Survey. 🧵⬇️ Image: Epicenter and shaking contours of the magnitude 8.8 Kamchatka earthquake (USGS)

Further update as of ~9:20pm Pacific Time on 7/29: There has been a *localized* upgrade to Tsunami Warning for segment of NorCal coast due to potential for <6 ft inundation near Crescent City. Rest of U.S./Canada West Coast remain under (lesser) Advisory. tsunami.gov/events/P...

⚒️ 🧪 A M8.8 earthquake just ruptured the subduction zone offshore Russia’s Kamchatka peninsula. This is one of the world’s truly huge earthquakes, and a triggered tsunami is currently traveling across the Pacific ocean. This same fault ruptured on July 20th in a M7.4, and last August in a M7.1.

Part of Northern California (from the CA/OR border to Cape Mendicino) is now under a Tsunami Warning. The rest of California remains under a Tsunami Advisory. www.tsunami.gov

The US west coast from the Cal/Mexico border to Cape Mendocino is now under a tsunami “Advisory”, the middle level of alerts, which means strong currents are expected during this night that can be dangerous to those in/near the ocean & beach Remember, tsunami are not a single wave but multiple waves

The seismic waves from the M8.8 earthquake off the coast of Russia are passing under us here in California. They are too small for humans to feel but can still be detected by seismometers www.iris.edu/app/station_...

A tsunami advisory is in effect for parts of the Pacific Northwest. Please visit tsunami.gov for additional information.

0045Z, 7/30: A #TsunamiWarning is now in effect for #Hawaii. ETA 7:17 PM HST tonight. Urgent action should be taken to protect lives and property along coastlines! #Tsunami

as of right now, except for some very outlying parts of alaska, it’s a watch not a warning in the US.

Magnitude 8.7 #earthquake in Kamchatka, following a M7.4 last week - may be largest earthquake since 2011, 8th largest on record globally, #tsunami warning in place for US west coast and Canada - the historic 1952 M9 closely caused a destructive tsunami across the Pacific

A magnitude 8.7 earthquake has just occurred off Russia's Kamchatka Peninsula, just a bit over a week after a magnitude 7.4 earthquake in the same area. Multiple tsunami warnings and advisories are in place. Please check www.tsunami.gov for the latest information.

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What governs whether the next big Cascadia earthquake will rupture the entire margin or stop partway? In our @weareseismica.bsky.social paper led by Jonatan Glehman, with Thomas Ulrich, Marlon Ramos, Yihe Huang, & Eric Lindsey, we link geodetic slip deficit models to 3D dynamic rupture simulations..

While this community effort was published already some time ago, it's worth highlighting if you have not seen it yet. Led by Valère Lambert this paper presents benchmark comparisons for simulations of fluid-induced aseismic slip. agupubs.onlinelibrary.wiley.com/doi/10.1029/...

How do faults slip? Join our AGU Session T009 - From fault blocks to exaflops: Earthquake slip from grain scale to plate boundaries on multiscale earthquake processes! Invited Speakers: Camilla Cattania, Elisa Tinti, Mohamed Abdelmeguid. agu.confex.com/agu/agu25/pr...

A paper about training the next generation of seismologists! Led by the amazing Marine Denolle & SCOPED project, we describe lessons learned from training hundreds of participants in HPC and cloud computing for earthquake simulations, machine learning & more pubs.geoscienceworld.org/ssa/srl/arti...

How do rocks really behave during strong shaking? In our new JGR paper led by Zihua Niu, we develop & verify a Discontinuous Galerkin method to simulate 3D seismic wave propagation in rocks with co-seismic modulus reduction, a key nonlinear effect in lab and field data ... doi.org/10.1029/2025...

How do tiny fluid-induced earthquakes stop, or sometimes turn into larger "runaway" ruptures? In our recent JGR paper we perform the first fully 3D dynamic rupture simulations of microearthquakes triggered by fluid injection, using SeisSol and data-constrained stress conditions from the Bedretto Lab

Registration for the Statewide California Earthquake Center (SCEC) 2025 Annual Meeting is now open at central.scec.org/meetings/202... Can’t wait to reconnect with old friends and welcome new colleagues in Palm Springs this September :) Sneak preview of the program below..

Very proud to congratulate Dr. Zihua Niu and Dr. Nico Schliwa on the successful defense of their PhD theses, both awarded the highest distinction, summa cum laude. It has been such a privilege to advise them, witness their growth as scientists, and to celebrate this milestone together. Congrats!

A digital twin for Cascadia tsunami early warning: We present real-time Bayesian inference of seafloor motion at extreme scale ~1 billion parameters, using 3D coupled acoustic-gravity wave equations & El Capitan's 43,520 #GPUs. Preprint led by Stefan Henneking & Omar Ghattas arxiv.org/abs/2504.16344

In Temblor's latest, @scrippsocean.bsky.social scientists discuss last week's M5.2 Julian earthquake. It caused little damage, but reminds residents in earthquake country to be prepared! Also, don't miss the fantastic animation of simulated ground motions. temblor.net/earthquake-i...

Need some tips to prep for West Coast quakes? This piece by @debi-kilb.bsky.social, @inseismoland.bsky.social, John Rekoske and Duncan Agnew has some advice, as well as a great discussion of the April 14 M5.2 Julian earthquake. ⚒️🧪

Seismic wavefield animation by John Rekoske of today's M5.2 #Julian #earthquake at the Elsinore fault zone, showing the velocity of ground motion and capturing seismic waves reverberating in the LA basin. We use rapid earthquake information from USGS and a supercomputer :) ! @igpp-sio.bsky.social

Today's M5.2 is the largest quake near the Elsinore fault since I came to California in 1983. But there were quite a few M4s along the way. A junior sibling to the San Andreas, the Elsinore is long enough to have given us some bigger events

Map of today’s M5.2 #earthquake near Julian in the context of regional past seismicity. This event was located near the Elsinore fault and relatively deep at 18 km. 🧪⚒️

M5.2 4km S of #Julian, CA, #SouthernCalifornia #Earthquake confirmed valid. Updated analysis coming soon @ buff.ly/PqszoOW

Jumping under the desk amidst a zoom meeting - M5.2 Julian #earthquake felt in San Diego earthquake.usgs.gov/earthquakes/... Did you feel it? Report it here: earthquake.usgs.gov/earthquakes/...

Congratulations to next generation earthquake physicists Jeena Yun & Baoning Wu @baoningwu.bsky.social for each receiving this year's @seismosocam.bsky.social's Paul Andrew Spudich Travel Awards! This obituary summarizes Paul's achievements and witty humor pubs.geoscienceworld.org/ssa/srl/arti...

Special, out-of-cycle, named PostDoc opportunity @igpp-sio.bsky.social @scrippsocean.bsky.social! We're now accepting applications for Green Foundation Postdoctoral Fellowships - deadline May 31. Please share widely & contact potential mentors. More information: igpp.ucsd.edu/about/green-...

See our write-up about this earthquake on Earthquake Insights: earthquakeinsights.substack.com/p/catastroph...

For a brief introduction to the Sagaing Fault, which ruptured in this event, you can read our post from May 2023: doi.org/10.62481/05f... (paywall removed). Stay tuned for a new post about this recent event at Earthquake Insights.