Dr. Amilcar Carrera-Cevallos
@acarrerac.bsky.social
Ecuador 🇪🇨🏳️🌈
Civil Engineer; MsC. Earthquake Engineering; PhD Earthquake Engineering.
Earthquake Scientists.
Civil Engineer; MsC. Earthquake Engineering; PhD Earthquake Engineering.
Earthquake Scientists.
Reposted by Dr. Amilcar Carrera-Cevallos
The results are in! We have updated the post with an initial InSAR image for this earthquake, showing ground deformation in this event. Scroll to the end to find the new text with figures!
A M5.8 earthquake struck NW China today - an aftershock of the 2024 M7 Wushi earthquake. Although slip in the M7 mainshock did not reach the surface, a M5.7 aftershock a week later produced a remarkable surface scarp. Did the latest M5.8 do the same thing? We're waiting for data to find out.
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M5.8 in northwestern China: aftershock of 2024 M7.0 Wushi earthquake
Well-studied earthquake sequence includes "blind" mainshock with surface-rupturing aftershock
earthquakeinsights.substack.com
December 9, 2025 at 10:09 PM
The results are in! We have updated the post with an initial InSAR image for this earthquake, showing ground deformation in this event. Scroll to the end to find the new text with figures!
Reposted by Dr. Amilcar Carrera-Cevallos
⚒️ 🧪 Japan just issued a “Subsequent Earthquake Advisory” following a M7.6 earthquake offshore Honshu. What does that mean?
Also: what happened in the earthquake, and why did it trigger a tsunami evacuation, with alerts of waves “up to 3 meters high”?
earthquakeinsights.substack.com/p/m76-earthq...
Also: what happened in the earthquake, and why did it trigger a tsunami evacuation, with alerts of waves “up to 3 meters high”?
earthquakeinsights.substack.com/p/m76-earthq...
M7.6 earthquake strikes offshore Honshu, Japan
Japan issues "Subsequent Earthquake Advisory" due to elevated (but still low) risk of triggered megaquake
earthquakeinsights.substack.com
December 9, 2025 at 12:04 AM
⚒️ 🧪 Japan just issued a “Subsequent Earthquake Advisory” following a M7.6 earthquake offshore Honshu. What does that mean?
Also: what happened in the earthquake, and why did it trigger a tsunami evacuation, with alerts of waves “up to 3 meters high”?
earthquakeinsights.substack.com/p/m76-earthq...
Also: what happened in the earthquake, and why did it trigger a tsunami evacuation, with alerts of waves “up to 3 meters high”?
earthquakeinsights.substack.com/p/m76-earthq...
Reposted by Dr. Amilcar Carrera-Cevallos
A magnitude 7.6 earthquake struck off the east coast of Aomori Prefecture in Japan, prompting tsunami advisories for parts of Honshu and Hokkaido. Japan lies in a tectonically complex area at the intersection of four tectonic plates, making it a highly seismically active area.
December 8, 2025 at 7:47 PM
A magnitude 7.6 earthquake struck off the east coast of Aomori Prefecture in Japan, prompting tsunami advisories for parts of Honshu and Hokkaido. Japan lies in a tectonically complex area at the intersection of four tectonic plates, making it a highly seismically active area.
Reposted by Dr. Amilcar Carrera-Cevallos
Information on the magnitude 7.6 earthquake in Japan, including an animation showing the seismic waves as they were detected by seismometers across North America. 🧪
December 8, 2025 at 6:23 PM
Information on the magnitude 7.6 earthquake in Japan, including an animation showing the seismic waves as they were detected by seismometers across North America. 🧪
Reposted by Dr. Amilcar Carrera-Cevallos
What’s the source for the geothermal reservoir in the Jianghan basin of central China? A new #SRL paper explores. ⚒️
pubs.geoscienceworld.org/ssa/srl/arti...
pubs.geoscienceworld.org/ssa/srl/arti...
December 8, 2025 at 8:01 PM
What’s the source for the geothermal reservoir in the Jianghan basin of central China? A new #SRL paper explores. ⚒️
pubs.geoscienceworld.org/ssa/srl/arti...
pubs.geoscienceworld.org/ssa/srl/arti...
Reposted by Dr. Amilcar Carrera-Cevallos
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Have you been watching the little swarm of earthquakes east of San Francisco (most recently, M3.7)? Here's a map and timeline.
Have you been watching the little swarm of earthquakes east of San Francisco (most recently, M3.7)? Here's a map and timeline.
December 8, 2025 at 8:31 PM
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Have you been watching the little swarm of earthquakes east of San Francisco (most recently, M3.7)? Here's a map and timeline.
Have you been watching the little swarm of earthquakes east of San Francisco (most recently, M3.7)? Here's a map and timeline.
Reposted by Dr. Amilcar Carrera-Cevallos
M 3.7 earthquake 4 km SE of San Ramon, CA. This is part of that ongoing earthquake swarm that started around Thanksgiving.
Did you feel it? Report it!
earthquake.usgs.gov/earthquakes/...
Did you feel it? Report it!
earthquake.usgs.gov/earthquakes/...
December 8, 2025 at 5:18 PM
M 3.7 earthquake 4 km SE of San Ramon, CA. This is part of that ongoing earthquake swarm that started around Thanksgiving.
Did you feel it? Report it!
earthquake.usgs.gov/earthquakes/...
Did you feel it? Report it!
earthquake.usgs.gov/earthquakes/...
Reposted by Dr. Amilcar Carrera-Cevallos
Here is the latest tsunami information for the M7.6 earthquake that just struck offshore northern Japan. The warnings are for waves up to 3 m, but the highest waves measured so far are <0.5 m. It is still possible for larger waves to arrive.
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www.jma.go.jp/bosai/map.ht...
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www.jma.go.jp/bosai/map.ht...
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December 8, 2025 at 3:40 PM
Here is the latest tsunami information for the M7.6 earthquake that just struck offshore northern Japan. The warnings are for waves up to 3 m, but the highest waves measured so far are <0.5 m. It is still possible for larger waves to arrive.
1/2
www.jma.go.jp/bosai/map.ht...
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www.jma.go.jp/bosai/map.ht...
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Reposted by Dr. Amilcar Carrera-Cevallos
December 8, 2025 at 3:27 PM
Reposted by Dr. Amilcar Carrera-Cevallos
Yesterday, a M7.0 earthquake struck the Alaska-Canada border, directly beneath the Hubbard Glacier. Aftershocks reveal an unmapped fault in this already complex area.
Read our post for more, & also:
What happens when a fault offsets a glacier?
Is the glacier named after one of my ancestors?
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Read our post for more, & also:
What happens when a fault offsets a glacier?
Is the glacier named after one of my ancestors?
⚒️ 🧪
M7.0 earthquake strikes Alaska-Canada border
Aftershocks suggest an unmapped fault beneath the Hubbard Glacier
earthquakeinsights.substack.com
December 7, 2025 at 6:32 PM
Yesterday, a M7.0 earthquake struck the Alaska-Canada border, directly beneath the Hubbard Glacier. Aftershocks reveal an unmapped fault in this already complex area.
Read our post for more, & also:
What happens when a fault offsets a glacier?
Is the glacier named after one of my ancestors?
⚒️ 🧪
Read our post for more, & also:
What happens when a fault offsets a glacier?
Is the glacier named after one of my ancestors?
⚒️ 🧪
Reposted by Dr. Amilcar Carrera-Cevallos
A M5.8 earthquake struck NW China today - an aftershock of the 2024 M7 Wushi earthquake. Although slip in the M7 mainshock did not reach the surface, a M5.7 aftershock a week later produced a remarkable surface scarp. Did the latest M5.8 do the same thing? We're waiting for data to find out.
⚒️ 🧪
⚒️ 🧪
M5.8 in northwestern China: aftershock of 2024 M7.0 Wushi earthquake
Well-studied earthquake sequence includes "blind" mainshock with surface-rupturing aftershock
earthquakeinsights.substack.com
December 5, 2025 at 12:11 AM
A M5.8 earthquake struck NW China today - an aftershock of the 2024 M7 Wushi earthquake. Although slip in the M7 mainshock did not reach the surface, a M5.7 aftershock a week later produced a remarkable surface scarp. Did the latest M5.8 do the same thing? We're waiting for data to find out.
⚒️ 🧪
⚒️ 🧪
Reposted by Dr. Amilcar Carrera-Cevallos
M3.4 earthquake, Lancashire UK, at 23.23 UTC on 3 December 2025. Recorded in Nottingham using (from top) 'slinky', horizontal pendulum, and LEGO school seismometers
#earthquake ⚒️ #geology 🦕
earthquake.usgs.gov/earthquakes/...
#earthquake ⚒️ #geology 🦕
earthquake.usgs.gov/earthquakes/...
December 4, 2025 at 12:55 PM
M3.4 earthquake, Lancashire UK, at 23.23 UTC on 3 December 2025. Recorded in Nottingham using (from top) 'slinky', horizontal pendulum, and LEGO school seismometers
#earthquake ⚒️ #geology 🦕
earthquake.usgs.gov/earthquakes/...
#earthquake ⚒️ #geology 🦕
earthquake.usgs.gov/earthquakes/...
Reposted by Dr. Amilcar Carrera-Cevallos
Understanding earthquake magnitude is simple. I don’t know why everyone is so confused 🤪
November 30, 2025 at 3:15 PM
Understanding earthquake magnitude is simple. I don’t know why everyone is so confused 🤪
Reposted by Dr. Amilcar Carrera-Cevallos
They certainly didn't chicken out!
I'll see myself out.
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#ak
#alaska
#earthquake
#chickens
#footage
#AEC
I'll see myself out.
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#ak
#alaska
#earthquake
#chickens
#footage
#AEC
This may just be my favorite video from Thursday's shaker. Whatever happened to animals being able to sense an earthquake coming? These birds are basically unruffled. Maybe they're used to it? Thanks to Michele from Knik for this one! And to everyone who shared your informative videos.
November 30, 2025 at 2:42 AM
Reposted by Dr. Amilcar Carrera-Cevallos
An excellent visualization of the subduction zone up here and the location of the earthquake. Thank you for sharing @judithgeology.bsky.social!
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#earthquake
#alaska
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#earthquake
#alaska
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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
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#earthquake
#alaska
Reposted by Dr. Amilcar Carrera-Cevallos
⚒️ 🧪
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/...
Reposted by Dr. Amilcar Carrera-Cevallos
🌟OPEN ACCESS🌟A Physics‐Based Study on the Correlation Between Fourier Amplitude Spectra and Deformations of a Caisson‐Type Quay Wall: To Illustrate the Utility of PSHA Based on Fourier Spectra for Assigning Seismic Actions for Geotechnical Structures #SRL ⚒️
pubs.geoscienceworld.org/ssa/srl/arti...
pubs.geoscienceworld.org/ssa/srl/arti...
November 27, 2025 at 3:04 PM
🌟OPEN ACCESS🌟A Physics‐Based Study on the Correlation Between Fourier Amplitude Spectra and Deformations of a Caisson‐Type Quay Wall: To Illustrate the Utility of PSHA Based on Fourier Spectra for Assigning Seismic Actions for Geotechnical Structures #SRL ⚒️
pubs.geoscienceworld.org/ssa/srl/arti...
pubs.geoscienceworld.org/ssa/srl/arti...
Reposted by Dr. Amilcar Carrera-Cevallos
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.
Reposted by Dr. Amilcar Carrera-Cevallos
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.
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Reposted by Dr. Amilcar Carrera-Cevallos
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.
Reposted by Dr. Amilcar Carrera-Cevallos
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?
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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...
Reposted by Dr. Amilcar Carrera-Cevallos
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.
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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.
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Reposted by Dr. Amilcar Carrera-Cevallos
Throwback to International Geophysical Year, 1957-1958, when WHOI leased the USCG cutter Yamacraw for acoustic studies of the N. Atlantic & Mediterranean.
After the last logs were recorded, scientists & crew gathered below deck for a jam session. Let's hope the banjo didn't influence their data!
After the last logs were recorded, scientists & crew gathered below deck for a jam session. Let's hope the banjo didn't influence their data!
November 13, 2025 at 5:00 PM
Throwback to International Geophysical Year, 1957-1958, when WHOI leased the USCG cutter Yamacraw for acoustic studies of the N. Atlantic & Mediterranean.
After the last logs were recorded, scientists & crew gathered below deck for a jam session. Let's hope the banjo didn't influence their data!
After the last logs were recorded, scientists & crew gathered below deck for a jam session. Let's hope the banjo didn't influence their data!
Reposted by Dr. Amilcar Carrera-Cevallos
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. Amilcar Carrera-Cevallos
⚒️ 🧪
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?