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Dr. Alice-Agnes Gabriel @inseismoland.bsky.social · 22h

Thanks @peaseroland.bsky.social! This was just sent out for review so happy for any comments or questions

Dr. Alice-Agnes Gabriel @inseismoland.bsky.social · 22h

whereas moderate events reflect transient asperities and short-term variations in fault strength. Our systematic statistics provide new constraints for coupling models and for linking geodesy with seismic hazard assessment. We welcome comments and discussion!

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Dr. Alice-Agnes Gabriel @inseismoland.bsky.social · 22h

We find that large events (Mw ≥ 7.5) systematically rupture strongly coupled regions, while smaller events rupture more variably, often in weakly coupled areas. This magnitude-dependent pattern may suggest that great earthquakes primarily release long-term accumulated strain,

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Dr. Alice-Agnes Gabriel @inseismoland.bsky.social · 22h

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...

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Dr. Alice-Agnes Gabriel @inseismoland.bsky.social · 6d

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

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Dr. Alice-Agnes Gabriel @inseismoland.bsky.social · 6d

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...

On predictability of slip, rupture geometry, and rupture speed of the Mw7.8 2025 Mandalay (Myanmar) Earthquake

The 2025 Mw7.8 Mandalay earthquake ruptured ~480 km of the Sagaing fault, producing one of the longest strike-slip events ever documented and impacting a vulnerable region with limited instrumental co...

www.researchsquare.com

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Dr. Alice-Agnes Gabriel @inseismoland.bsky.social · 15d

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 :)

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Dr. Alice-Agnes Gabriel @inseismoland.bsky.social · 21d

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...

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Dr. Alice-Agnes Gabriel @inseismoland.bsky.social · Aug 12

All of us and our science look better than Captin Underpants.

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Reposted by Dr. Alice-Agnes Gabriel

Thorsten Becker @thwbecker.bsky.social · Aug 11

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

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Dr. Alice-Agnes Gabriel @inseismoland.bsky.social · Aug 5

San Diego Supercomputer Center for the behind-the-scenes tour. Looking forward to next year, when we will organize a large-scale Tandem user training!

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Dr. Alice-Agnes Gabriel @inseismoland.bsky.social · Aug 5

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

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Dr. Alice-Agnes Gabriel @inseismoland.bsky.social · Aug 4

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...

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Reposted by Dr. Alice-Agnes Gabriel

Lucy Jones @drlucyjones.bsky.social · Jul 31

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.

Caltech Quake Bot @caltechquake.bsky.social · Jul 31

#AutoEQ A magnitude 4.2 (MI) #earthquake has occurred 4 mi W of Muscoy, CA at 09:32 PDT Jul 31, 2025 [2025-07-31 16:32 UTC]. #SCSN has not yet confirmed this event. For more info visit http://earthquake.usgs.gov/earthquakes/eventpage/ci41249496#executive

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Reposted by Dr. Alice-Agnes Gabriel

Caltech Seismological Laboratory @caltechseismo.bsky.social · Jul 31

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.

The Earthquake Event Page application supports most recent…

The Earthquake Event Page application supports most recent browsers, view supported browsers. Or, try our Real-time Notifications, Feeds, and Web Services.

earthquake.usgs.gov

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Reposted by Dr. Alice-Agnes Gabriel

Scripps Institution of Oceanography @scrippsocean.bsky.social · Jul 30

⚠️ 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

Earthquake Hazards Program

on.doi.gov

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Reposted by Dr. Alice-Agnes Gabriel

Scripps Institution of Oceanography @scrippsocean.bsky.social · Jul 30

"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."

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Reposted by Dr. Alice-Agnes Gabriel

Scripps Institution of Oceanography @scrippsocean.bsky.social · Jul 30

🚨 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)

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Dr. Alice-Agnes Gabriel @inseismoland.bsky.social · Jul 30

Nice work! Can you explain the source used a bit more?

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Reposted by Dr. Alice-Agnes Gabriel

Daniel Swain @weatherwest.bsky.social · Jul 30

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...

Screenshot of latest warning text, which begins:
"BULLETIN
Public Tsunami Message Number 5
NWS National Tsunami Warning Center Palmer AK
827 PM PDT Tue Jul 29 2025

UPDATES
-------
* Revised alert areas

...THE TSUNAMI WARNING REMAINS IN EFFECT...

...THE TSUNAMI ADVISORY REMAINS IN EFFECT...

Tsunami Warning in Effect for;

* CALIFORNIA, The coast from Cape Mendocino, California to
The Oregon/Cal. Border

* ALEUTIAN ISLANDS, Samalga Pass, Alaska (30 miles SW of
Nikolski) to Attu, Alaska including the Pribilof Islands

Tsunami Advisory in Effect for;

* CALIFORNIA, The coast from The Cal./Mexico Border to Cape
Mendocino, California including San Francisco Bay

* OREGON, The coast from The Oregon/Cal. Border to The
Oregon/Wash. Border including the Columbia River estuary
coast

* WASHINGTON, Outer coast from the Oregon/Washington border
to Slip Point, Columbia River estuary coast, and the Juan
de Fuca Strait coast

"

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Reposted by Dr. Alice-Agnes Gabriel

Dr. Judith Hubbard @judithgeology.bsky.social · Jul 30

⚒️ 🧪

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.

M8.8 earthquake strikes offshore Kamchatka

A dangerous subduction megathrust ruptures once again

earthquakeinsights.substack.com

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Reposted by Dr. Alice-Agnes Gabriel

Dr. Wendy Bohon @drwendyrocks.bsky.social · Jul 30

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

Image of the coast of California showing the area between the state line and cape Mendocino in red.

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Dr. Alice-Agnes Gabriel @inseismoland.bsky.social · Jul 30

bsky.app/profile/inse...

Dr. Alice-Agnes Gabriel @inseismoland.bsky.social · Jul 30

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

Tsunami Alerts (NTWC) from US National Tsunami Warning Center @tsunamialertsntwc.bsky.social · Jul 30

#Earthquake
M8.8 earthquake 315 miles SW of Bering I., Komandorski 16:24PDT Jul 29 Depth 74km

Actions to protect human life and property will vary within tsunami warning a...

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Dr. Alice-Agnes Gabriel @inseismoland.bsky.social · Jul 30

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

Tsunami Alerts (NTWC) from US National Tsunami Warning Center @tsunamialertsntwc.bsky.social · Jul 30

#Earthquake
M8.8 earthquake 315 miles SW of Bering I., Komandorski 16:24PDT Jul 29 Depth 74km

Actions to protect human life and property will vary within tsunami warning a...

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