Dr. Judith Hubbard
@judithgeology.bsky.social
Earthquake scientist; read my earthquake newsletter: earthquakeinsights.substack.com. Visiting Asst Prof @CornellEAS; prev @ EOS_SG, Caltech, Harvard. Mom (x3). Local elected official! I also post pictures of my foster kittens.
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Earthquake Insights | Judith Hubbard & Kyle Bradley | Substack
An earthquake just happened - why, and what does it tell us? Keep up to date with expert insights into latest events and research. Click to read Earthquake Insights, a Substack publication with thousa...
earthquakeinsights.substack.com
Want to learn about earthquakes? I write a newsletter deciphering recent events with my collaborator, Dr. Kyle Bradley.
Subscribe (free!) to get our posts delivered to your inbox! If you think our work is important, consider becoming a paid subscriber.
earthquakeinsights.substack.com
Subscribe (free!) to get our posts delivered to your inbox! If you think our work is important, consider becoming a paid subscriber.
earthquakeinsights.substack.com
Reposted by Dr. Judith Hubbard
An excellent visualization of the subduction zone up here and the location of the earthquake. Thank you for sharing @judithgeology.bsky.social!
🧪⚒️
#earthquake
#alaska
🧪⚒️
#earthquake
#alaska
⚒️ 🧪
This morning, a M6 earthquake struck at ~70 km depth near Anchorage, Alaska.
Earthquakes are a regular part of life here: this is a subduction zone, with earthquakes deepening east to west. M6 earthquakes fall well within the range of "normal".
USGS page: earthquake.usgs.gov/earthquakes/...
This morning, a M6 earthquake struck at ~70 km depth near Anchorage, Alaska.
Earthquakes are a regular part of life here: this is a subduction zone, with earthquakes deepening east to west. M6 earthquakes fall well within the range of "normal".
USGS page: earthquake.usgs.gov/earthquakes/...
November 28, 2025 at 1:34 AM
An excellent visualization of the subduction zone up here and the location of the earthquake. Thank you for sharing @judithgeology.bsky.social!
🧪⚒️
#earthquake
#alaska
🧪⚒️
#earthquake
#alaska
⚒️ 🧪
This morning, a M6 earthquake struck at ~70 km depth near Anchorage, Alaska.
Earthquakes are a regular part of life here: this is a subduction zone, with earthquakes deepening east to west. M6 earthquakes fall well within the range of "normal".
USGS page: earthquake.usgs.gov/earthquakes/...
This morning, a M6 earthquake struck at ~70 km depth near Anchorage, Alaska.
Earthquakes are a regular part of life here: this is a subduction zone, with earthquakes deepening east to west. M6 earthquakes fall well within the range of "normal".
USGS page: earthquake.usgs.gov/earthquakes/...
November 27, 2025 at 9:22 PM
⚒️ 🧪
This morning, a M6 earthquake struck at ~70 km depth near Anchorage, Alaska.
Earthquakes are a regular part of life here: this is a subduction zone, with earthquakes deepening east to west. M6 earthquakes fall well within the range of "normal".
USGS page: earthquake.usgs.gov/earthquakes/...
This morning, a M6 earthquake struck at ~70 km depth near Anchorage, Alaska.
Earthquakes are a regular part of life here: this is a subduction zone, with earthquakes deepening east to west. M6 earthquakes fall well within the range of "normal".
USGS page: earthquake.usgs.gov/earthquakes/...
⚒️ 🧪
A M6.6 earthquake just struck the subduction zone offshore Sumatra, causing some damage and injuries on Simeulue Island.
How does this event fit into the mosaic of large earthquakes that have occurred on this fault over the last few decades?
earthquakeinsights.substack.com/p/m66-earthq...
A M6.6 earthquake just struck the subduction zone offshore Sumatra, causing some damage and injuries on Simeulue Island.
How does this event fit into the mosaic of large earthquakes that have occurred on this fault over the last few decades?
earthquakeinsights.substack.com/p/m66-earthq...
M6.6 earthquake strikes Sunda subduction zone offshore Sumatra
Some building damage and injuries on Simeulue Island
earthquakeinsights.substack.com
November 27, 2025 at 3:19 PM
⚒️ 🧪
A M6.6 earthquake just struck the subduction zone offshore Sumatra, causing some damage and injuries on Simeulue Island.
How does this event fit into the mosaic of large earthquakes that have occurred on this fault over the last few decades?
earthquakeinsights.substack.com/p/m66-earthq...
A M6.6 earthquake just struck the subduction zone offshore Sumatra, causing some damage and injuries on Simeulue Island.
How does this event fit into the mosaic of large earthquakes that have occurred on this fault over the last few decades?
earthquakeinsights.substack.com/p/m66-earthq...
What should you do to prepare for earthquakes in Bangladesh — especially if you don’t live there anymore?
I had the pleasure of chatting with Anil Wasif from BacharLorai Global, a nonprofit aimed at empowering Bangladeshis worldwide, about the recent quake, seismic hazards, and how to do better.
I had the pleasure of chatting with Anil Wasif from BacharLorai Global, a nonprofit aimed at empowering Bangladeshis worldwide, about the recent quake, seismic hazards, and how to do better.
November 26, 2025 at 11:47 AM
What should you do to prepare for earthquakes in Bangladesh — especially if you don’t live there anymore?
I had the pleasure of chatting with Anil Wasif from BacharLorai Global, a nonprofit aimed at empowering Bangladeshis worldwide, about the recent quake, seismic hazards, and how to do better.
I had the pleasure of chatting with Anil Wasif from BacharLorai Global, a nonprofit aimed at empowering Bangladeshis worldwide, about the recent quake, seismic hazards, and how to do better.
Some footage from Bangladesh, post M5.5 earthquake. This is probably lateral spreading and slumping associated with earthquake-triggered liquefaction. Liquefaction is a huge hazard in Bangladesh, because so many people live in low-lying areas on saturated sediments.
⚒️ 🧪
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November 23, 2025 at 1:24 PM
Some footage from Bangladesh, post M5.5 earthquake. This is probably lateral spreading and slumping associated with earthquake-triggered liquefaction. Liquefaction is a huge hazard in Bangladesh, because so many people live in low-lying areas on saturated sediments.
⚒️ 🧪
⚒️ 🧪
Reposted by Dr. Judith Hubbard
A M5.5 earthquake killed at least ten people in Bangladesh today. What made this moderate event so deadly? And what do we know about seismic hazards in the country?
⚒️ 🧪
earthquakeinsights.substack.com/p/bangladesh...
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earthquakeinsights.substack.com/p/bangladesh...
Bangladesh shaken by deadly M5.5 earthquake
A moderate magnitude earthquake near a dense, vulnerable megacity
earthquakeinsights.substack.com
November 22, 2025 at 3:06 AM
A M5.5 earthquake killed at least ten people in Bangladesh today. What made this moderate event so deadly? And what do we know about seismic hazards in the country?
⚒️ 🧪
earthquakeinsights.substack.com/p/bangladesh...
⚒️ 🧪
earthquakeinsights.substack.com/p/bangladesh...
Hopefully, if this does come to pass, any new construction will take seismic risk into consideration. Tehran is an earthquake disaster waiting to happen. Retrofitting old buildings is much harder than building new ones that are more resilient.
'Iran’s capital must be moved because the country “no longer has a choice,” President Masoud Pezeshkian said on Thursday in remarks carried by state media, warning that severe ecological strain has made Tehran impossible to sustain'
#Iran 🇮🇷
#Iran 🇮🇷
Iran president says capital move now a necessity as water crisis deepens
Iran’s capital must be moved because the country “no longer has a choice,” President Masoud Pezeshkian said on Thursday in remarks carried by state media, warning that severe ecological strain has mad...
www.iranintl.com
November 22, 2025 at 12:23 PM
Hopefully, if this does come to pass, any new construction will take seismic risk into consideration. Tehran is an earthquake disaster waiting to happen. Retrofitting old buildings is much harder than building new ones that are more resilient.
A M5.5 earthquake killed at least ten people in Bangladesh today. What made this moderate event so deadly? And what do we know about seismic hazards in the country?
⚒️ 🧪
earthquakeinsights.substack.com/p/bangladesh...
⚒️ 🧪
earthquakeinsights.substack.com/p/bangladesh...
Bangladesh shaken by deadly M5.5 earthquake
A moderate magnitude earthquake near a dense, vulnerable megacity
earthquakeinsights.substack.com
November 22, 2025 at 3:06 AM
A M5.5 earthquake killed at least ten people in Bangladesh today. What made this moderate event so deadly? And what do we know about seismic hazards in the country?
⚒️ 🧪
earthquakeinsights.substack.com/p/bangladesh...
⚒️ 🧪
earthquakeinsights.substack.com/p/bangladesh...
This is giving me Brawndo vibes.
(It's got what plants crave!)
(It's got what plants crave!)
One day we’ll look back on this as one of the stupidest things we’ve done.
California farms applied millions of pounds of PFAS to key crops, study finds
‘Forever chemicals’ sprayed on almonds, grapes, tomatoes and other crops as activists warn of ‘obvious problem’
www.theguardian.com
November 18, 2025 at 12:30 PM
This is giving me Brawndo vibes.
(It's got what plants crave!)
(It's got what plants crave!)
Earthquake Insights is making *almost* $20k a year - which is simultaneously more than I ever thought it would make, and not nearly enough to raise a family.
1/5
1/5
November 17, 2025 at 12:04 AM
Earthquake Insights is making *almost* $20k a year - which is simultaneously more than I ever thought it would make, and not nearly enough to raise a family.
1/5
1/5
Are there any other geological map stamps??? I have a sudden urge to collect geology-themed stamps!
A new stamp of a seminal map by Dr Okan Tüysüz and Dr Aral Okay in 1999 will soon be published in Turkey.
@judithgeology.bsky.social FYI
@judithgeology.bsky.social FYI
November 15, 2025 at 1:16 AM
Are there any other geological map stamps??? I have a sudden urge to collect geology-themed stamps!
Reposted by Dr. Judith Hubbard
In the last 11 days another 102 donors have given >than $40,000, with some other donations in stock waiting to become available for use.
PRI can make it with your help!
Please continue to share with your networks for potential donors so we can keep the museum and its online resources available!
PRI can make it with your help!
Please continue to share with your networks for potential donors so we can keep the museum and its online resources available!
November 15, 2025 at 12:33 AM
In the last 11 days another 102 donors have given >than $40,000, with some other donations in stock waiting to become available for use.
PRI can make it with your help!
Please continue to share with your networks for potential donors so we can keep the museum and its online resources available!
PRI can make it with your help!
Please continue to share with your networks for potential donors so we can keep the museum and its online resources available!
One (1) puddle of foster kittens.
November 14, 2025 at 3:39 PM
One (1) puddle of foster kittens.
This series about the impacts of federal cuts to science funding is heartbreaking.
www.nytimes.com/2025/11/13/c...
www.nytimes.com/2025/11/13/c...
He Helped Cities Anticipate Damage From Storms
www.nytimes.com
November 13, 2025 at 5:13 PM
This series about the impacts of federal cuts to science funding is heartbreaking.
www.nytimes.com/2025/11/13/c...
www.nytimes.com/2025/11/13/c...
Something is terribly wrong in the book my 7 year old is reading.
November 11, 2025 at 2:03 PM
Something is terribly wrong in the book my 7 year old is reading.
Reposted by Dr. Judith Hubbard
Tectonic plate puzzle anyone? 🌎
Made by me, one at a time. I’m planning to have a really limited number available before the holidays - if you want to find out when I do, sign up to my newsletter! I will share them through it first.
Sign up > www.luciaperezdiaz.com#newsletter
(No spam, I promise)
Made by me, one at a time. I’m planning to have a really limited number available before the holidays - if you want to find out when I do, sign up to my newsletter! I will share them through it first.
Sign up > www.luciaperezdiaz.com#newsletter
(No spam, I promise)
November 11, 2025 at 11:37 AM
Tectonic plate puzzle anyone? 🌎
Made by me, one at a time. I’m planning to have a really limited number available before the holidays - if you want to find out when I do, sign up to my newsletter! I will share them through it first.
Sign up > www.luciaperezdiaz.com#newsletter
(No spam, I promise)
Made by me, one at a time. I’m planning to have a really limited number available before the holidays - if you want to find out when I do, sign up to my newsletter! I will share them through it first.
Sign up > www.luciaperezdiaz.com#newsletter
(No spam, I promise)
Wow! I am currently experiencing serious underwater-seismometer-envy. This is so cool.
The underwater seismometer network is so great, as evidenced from yesterday's EQ off-Tohoku.
Reposting unofficial visualization by x.com/kotoho76/sta...
Reposting unofficial visualization by x.com/kotoho76/sta...
November 10, 2025 at 3:20 PM
Wow! I am currently experiencing serious underwater-seismometer-envy. This is so cool.
Reposted by Dr. Judith Hubbard
The underwater seismometer network is so great, as evidenced from yesterday's EQ off-Tohoku.
Reposting unofficial visualization by x.com/kotoho76/sta...
Reposting unofficial visualization by x.com/kotoho76/sta...
November 10, 2025 at 6:56 AM
The underwater seismometer network is so great, as evidenced from yesterday's EQ off-Tohoku.
Reposting unofficial visualization by x.com/kotoho76/sta...
Reposting unofficial visualization by x.com/kotoho76/sta...
Reposted by Dr. Judith Hubbard
⚒️ 🧪
A M6.8 earthquake struck offshore Japan today - another large earthquake from the subduction zone that produced two recent great earthquakes. The earthquake was preceded by a "cascade up": foreshocks progressively increasing in maximum magnitude.
What do we know? What might happen next?
A M6.8 earthquake struck offshore Japan today - another large earthquake from the subduction zone that produced two recent great earthquakes. The earthquake was preceded by a "cascade up": foreshocks progressively increasing in maximum magnitude.
What do we know? What might happen next?
M6.8 earthquake offshore Japan preceded by upward cascade of foreshocks
What do we know about seismic hazard in the Japan-Kuril subduction zone?
earthquakeinsights.substack.com
November 9, 2025 at 6:41 PM
⚒️ 🧪
A M6.8 earthquake struck offshore Japan today - another large earthquake from the subduction zone that produced two recent great earthquakes. The earthquake was preceded by a "cascade up": foreshocks progressively increasing in maximum magnitude.
What do we know? What might happen next?
A M6.8 earthquake struck offshore Japan today - another large earthquake from the subduction zone that produced two recent great earthquakes. The earthquake was preceded by a "cascade up": foreshocks progressively increasing in maximum magnitude.
What do we know? What might happen next?
Reposted by Dr. Judith Hubbard
If you like to read about earthquakes, and think it is important for these kinds of analyses to be available, please consider becoming a paid subscriber! We offer all of our recent posts for free, but need support to make this work sustainable.
November 9, 2025 at 8:49 PM
If you like to read about earthquakes, and think it is important for these kinds of analyses to be available, please consider becoming a paid subscriber! We offer all of our recent posts for free, but need support to make this work sustainable.
Reposted by Dr. Judith Hubbard
A fascinating read to learn more about the Japan earthquake and the region where it occurred.
⚒️ 🧪
A M6.8 earthquake struck offshore Japan today - another large earthquake from the subduction zone that produced two recent great earthquakes. The earthquake was preceded by a "cascade up": foreshocks progressively increasing in maximum magnitude.
What do we know? What might happen next?
A M6.8 earthquake struck offshore Japan today - another large earthquake from the subduction zone that produced two recent great earthquakes. The earthquake was preceded by a "cascade up": foreshocks progressively increasing in maximum magnitude.
What do we know? What might happen next?
M6.8 earthquake offshore Japan preceded by upward cascade of foreshocks
What do we know about seismic hazard in the Japan-Kuril subduction zone?
earthquakeinsights.substack.com
November 9, 2025 at 7:54 PM
A fascinating read to learn more about the Japan earthquake and the region where it occurred.
Reposted by Dr. Judith Hubbard
Un #sismo M6.8 sacudió la costa de Japón hoy, en la misma zona de subducción que el grande de 2011.
Un “pequeño” #tsunami llegó a tierra con olas <0.2 m; la mayor, 50 min después, recordatorio de que los #tsunamis pueden durar y llegar en varias olas 🌊
Un “pequeño” #tsunami llegó a tierra con olas <0.2 m; la mayor, 50 min después, recordatorio de que los #tsunamis pueden durar y llegar en varias olas 🌊
⚒️ 🧪
A M6.8 earthquake struck offshore Japan today - another large earthquake from the subduction zone that produced two recent great earthquakes. The earthquake was preceded by a "cascade up": foreshocks progressively increasing in maximum magnitude.
What do we know? What might happen next?
A M6.8 earthquake struck offshore Japan today - another large earthquake from the subduction zone that produced two recent great earthquakes. The earthquake was preceded by a "cascade up": foreshocks progressively increasing in maximum magnitude.
What do we know? What might happen next?
M6.8 earthquake offshore Japan preceded by upward cascade of foreshocks
What do we know about seismic hazard in the Japan-Kuril subduction zone?
earthquakeinsights.substack.com
November 9, 2025 at 7:24 PM
Reposted by Dr. Judith Hubbard
Today's Japan M6.8 is in an interesting spot: the zone of "missing" slip just north of the very large shallow rupture in the 2011 M9.
⚒️ 🧪
A M6.8 earthquake struck offshore Japan today - another large earthquake from the subduction zone that produced two recent great earthquakes. The earthquake was preceded by a "cascade up": foreshocks progressively increasing in maximum magnitude.
What do we know? What might happen next?
A M6.8 earthquake struck offshore Japan today - another large earthquake from the subduction zone that produced two recent great earthquakes. The earthquake was preceded by a "cascade up": foreshocks progressively increasing in maximum magnitude.
What do we know? What might happen next?
M6.8 earthquake offshore Japan preceded by upward cascade of foreshocks
What do we know about seismic hazard in the Japan-Kuril subduction zone?
earthquakeinsights.substack.com
November 9, 2025 at 7:36 PM
Today's Japan M6.8 is in an interesting spot: the zone of "missing" slip just north of the very large shallow rupture in the 2011 M9.
⚒️ 🧪
A M6.8 earthquake struck offshore Japan today - another large earthquake from the subduction zone that produced two recent great earthquakes. The earthquake was preceded by a "cascade up": foreshocks progressively increasing in maximum magnitude.
What do we know? What might happen next?
A M6.8 earthquake struck offshore Japan today - another large earthquake from the subduction zone that produced two recent great earthquakes. The earthquake was preceded by a "cascade up": foreshocks progressively increasing in maximum magnitude.
What do we know? What might happen next?
M6.8 earthquake offshore Japan preceded by upward cascade of foreshocks
What do we know about seismic hazard in the Japan-Kuril subduction zone?
earthquakeinsights.substack.com
November 9, 2025 at 6:41 PM
⚒️ 🧪
A M6.8 earthquake struck offshore Japan today - another large earthquake from the subduction zone that produced two recent great earthquakes. The earthquake was preceded by a "cascade up": foreshocks progressively increasing in maximum magnitude.
What do we know? What might happen next?
A M6.8 earthquake struck offshore Japan today - another large earthquake from the subduction zone that produced two recent great earthquakes. The earthquake was preceded by a "cascade up": foreshocks progressively increasing in maximum magnitude.
What do we know? What might happen next?
Yessss
Fellow seismologists, we're going to get a lot of mileage out of the latest @xkcd.com
November 8, 2025 at 9:06 PM
Yessss