Dr. Alice-Agnes Gabriel
@inseismoland.bsky.social
Associate Professor Scripps Institution of Oceanography UCSD, Guest Prof LMU Munich, EGU Seismology Division President, earthquake source philosopher, high-performance computing enthusiast, mommy
Reader’s Choice Award for Best Use of HPC in Physical Sciences - Thank you!
And a huge thank you to the interdisciplinary team making all of this possible: Stefan Henneking, Sreeram Venkat, Veselin Dobrev, John Camier, Tzanio Kolev, Milinda Fernando, and Omar Ghattas.
@scrippsocean.bsky.social
And a huge thank you to the interdisciplinary team making all of this possible: Stefan Henneking, Sreeram Venkat, Veselin Dobrev, John Camier, Tzanio Kolev, Milinda Fernando, and Omar Ghattas.
@scrippsocean.bsky.social
November 21, 2025 at 4:53 PM
Reader’s Choice Award for Best Use of HPC in Physical Sciences - Thank you!
And a huge thank you to the interdisciplinary team making all of this possible: Stefan Henneking, Sreeram Venkat, Veselin Dobrev, John Camier, Tzanio Kolev, Milinda Fernando, and Omar Ghattas.
@scrippsocean.bsky.social
And a huge thank you to the interdisciplinary team making all of this possible: Stefan Henneking, Sreeram Venkat, Veselin Dobrev, John Camier, Tzanio Kolev, Milinda Fernando, and Omar Ghattas.
@scrippsocean.bsky.social
It still feels so unreal! Yesterday, we were awarded the "Nobel Prize" of Supercomputing, the ACM Gordon Bell Prize at #SC25 for our paper “Real-Time Bayesian Inference at Extreme Scale: A Digital Twin for Tsunami Early Warning Applied to the Cascadia Subduction Zone”: dl.acm.org/doi/full/10....
November 21, 2025 at 4:53 PM
It still feels so unreal! Yesterday, we were awarded the "Nobel Prize" of Supercomputing, the ACM Gordon Bell Prize at #SC25 for our paper “Real-Time Bayesian Inference at Extreme Scale: A Digital Twin for Tsunami Early Warning Applied to the Cascadia Subduction Zone”: dl.acm.org/doi/full/10....
Thank you to the HPCwire readers for the “Best Use of HPC in Physical Sciences” award!
November 20, 2025 at 12:46 AM
Thank you to the HPCwire readers for the “Best Use of HPC in Physical Sciences” award!
Great to meet up with colleagues from Statewide California Earthquake Center (SCEC)’s research computing team at #SC25, Philip Maechling and Scott Callaghan, who support much of the computational infrastructure behind California earthquake research.
November 19, 2025 at 7:22 PM
Great to meet up with colleagues from Statewide California Earthquake Center (SCEC)’s research computing team at #SC25, Philip Maechling and Scott Callaghan, who support much of the computational infrastructure behind California earthquake research.
Heading to #SC25 where our “Team Cascadia” presents the digital-twin #HPC framework integrating Bayesian inference at extreme scale towards real-time, physics-based tsunami early warning that earned us a place among this year’s ACM Gordon Bell Prize finalists.
All presentations:
All presentations:
November 17, 2025 at 7:58 PM
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...
October 20, 2025 at 6:41 PM
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...
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...
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...
October 7, 2025 at 7:01 PM
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...
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
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
October 1, 2025 at 7:07 PM
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
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
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 :)
September 23, 2025 at 12:51 AM
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...
doi.org/10.1029/2025...
September 17, 2025 at 2:59 AM
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...
doi.org/10.1029/2025...
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
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
August 5, 2025 at 6:13 PM
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
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...
Now is a good moment to review tsunami evacuation routes and flood zones in your area!
fox5sandiego.com/news/local-n...
August 4, 2025 at 9:20 PM
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...
Now is a good moment to review tsunami evacuation routes and flood zones in your area!
fox5sandiego.com/news/local-n...
An overview of which regions are under watch, advisory or warning is frequently updated at tsunami.gov
July 30, 2025 at 1:43 AM
An overview of which regions are under watch, advisory or warning is frequently updated at tsunami.gov
Tsunami alerts can be confusing- Difference between a tsunami warning and a tsunami watch - from www.weather.gov/safety/tsuna...
July 30, 2025 at 1:38 AM
Tsunami alerts can be confusing- Difference between a tsunami warning and a tsunami watch - from www.weather.gov/safety/tsuna...
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
July 30, 2025 at 1:00 AM
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
We explore the interplay between slip deficit, depth-dependent rigidity, and pore fluid pressure affecting normal stress using 22 dynamic rupture scenarios simulated with SeisSol. We find that partial ruptures dominate under the realistic stress and friction assumptions we explore.
July 25, 2025 at 8:34 PM
We explore the interplay between slip deficit, depth-dependent rigidity, and pore fluid pressure affecting normal stress using 22 dynamic rupture scenarios simulated with SeisSol. We find that partial ruptures dominate under the realistic stress and friction assumptions we explore.
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..
July 25, 2025 at 8:34 PM
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..
It features the validation of Tandem, our Discontinuous Galerkin SEAS code, by Jeena Yun, alongside nine other codes from the community. Results show excellent agreement across methods and reveal how modeling choices affect aseismic fault slip driven by fluid injection.
July 18, 2025 at 7:40 PM
It features the validation of Tandem, our Discontinuous Galerkin SEAS code, by Jeena Yun, alongside nine other codes from the community. Results show excellent agreement across methods and reveal how modeling choices affect aseismic fault slip driven by fluid injection.
It's the latest outcome of international efforts to advance reproducibility in SEAS (Sequences of Earthquakes and Aseismic Slip) models, an important step toward physics-based understanding of slow slip events and earthquake nucleation.
July 18, 2025 at 7:40 PM
It's the latest outcome of international efforts to advance reproducibility in SEAS (Sequences of Earthquakes and Aseismic Slip) models, an important step toward physics-based understanding of slow slip events and earthquake nucleation.
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...
Invited Speakers: Camilla Cattania, Elisa Tinti, Mohamed Abdelmeguid.
agu.confex.com/agu/agu25/pr...
July 17, 2025 at 5:49 AM
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...
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...
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...
July 15, 2025 at 4:15 AM
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...
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...
The video in the first post shows ground velocity of a purely elastic simulation (left panel) and the same simulation with nonlinear internal variable damage model (right panel). Seismic waves reach the Kathmandu basin at ∼27 s after the earthquake initiated.
July 13, 2025 at 7:37 PM
The video in the first post shows ground velocity of a purely elastic simulation (left panel) and the same simulation with nonlinear internal variable damage model (right panel). Seismic waves reach the Kathmandu basin at ∼27 s after the earthquake initiated.
We apply this implementation to model shaking scenarios in the Kathmandu basin due to the 2015 Mw 7.8 Gorkha earthquake. Our method captures energy loss, waveform distortion & amplitude-dependent wave speeds due to coseismic rock damage, bridging the gap between field-scale models and rock mechanics
July 13, 2025 at 7:37 PM
We apply this implementation to model shaking scenarios in the Kathmandu basin due to the 2015 Mw 7.8 Gorkha earthquake. Our method captures energy loss, waveform distortion & amplitude-dependent wave speeds due to coseismic rock damage, bridging the gap between field-scale models and rock mechanics
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...
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...
July 13, 2025 at 7:37 PM
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...
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...