#paleoseismology — Public Fediverse posts

The Cajon Pass functions as an "earthquake gate," a complex tectonic junction in Southern California that dictates whether seismic ruptures remain confined to a single fault or propagate simultaneously across the intersecting San Andreas and San Jacinto fault systems.
#Seismology #Geophysics #Tectonophysics #Paleoseismology #EarthScience #sflorg
https://www.sflorg.com/2026/06/es06082601.html

Active Faults Greece - A Comprehensive Geomorphology-Based 1:25,000 Fault Database
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https://doi.org/10.1038/s41597-025-06283-z <-- shared paper
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https://activefaults.eagme.gr/en/ <-- shared Hellenic DataBase of Active Faults (HeDBAF) access
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#GIS #spatial #mapping #Greece #Europe #geology #fault #faulting #remotesensing #earthobservation #seismology #seismic #earthquake #paleoseismology #activefault #risk #hazard #naturaldisasters #DEM #elevation #ActiveFaultsGreece #AFG #database #faulttraces #engineeringeology #spatialanalysis #geomorphology #landsurface #planning #hazardassessment

A comprehensive 6,000-year study overturns the assumption that major #earthquakes follow predictable cycles, demonstrating instead that they occur in random clusters and lulls.
#EarthScience #Paleoseismology #Geophysics #sflorg
https://www.sflorg.com/2026/02/es02122601.html

Unravelling The Dance Of Earthquakes - Evidence Of Partial Synchronization Of The Northern San Andreas Fault And Cascadia Megathrust
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https://doi.org/10.1130/GES02857.1 <-- shared paper
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“Previous paleoseismic work has suggested a possible stress triggering relationship between the Cascadia subduction zone and the northern San Andreas fault based on similar event timings. Turbidite successions correlated to both systems may support this hypothesis. Historic earthquakes in 1980 and 1992 in the Cascadia subduction zone and the 1906 earthquake on the northern San Andreas fault left turbidite records that are temporally well constrained by bomb-carbon−supported age-depth models..."
#geology #USWest #Seattle #Washington #California #earthquake #engineeringeology #fault #faulting #SanAndreas #Cascadiasubductionzone #linked #Cascadia #research #sediment #sedimentology #Turbidite #paleoseismology #historic #spatial #spatialanalysis #spatiotemporal #model #modeling #stress #subduction #dating #radiocarbon #Holocene

“I’ve been out to the marshes a few times with them,” Melgar said. “After you go out there a few times, you’re like, ‘Oh, this is why we don’t have more data. It’s brutal work.’”

#paleoseismology
#tsunami

https://wapo.st/4ikXQr1

Long-Term Patterns Of Earthquakes Influenced By Climate Change - Insights From Earthquake Recurrence And Stress Field Changes Across The Korean Peninsula During Interglacial Periods [sea level changes]
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https://doi.org/10.1016/j.quascirev.2023.108369 <-- shared paper
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[my engineering geology Masters thesis way-back-when on primarily paleoseismology utilised - in part - fault gouge quartz for empirical dating although I was using SEM pics to look at the quartz’s abrasion levels, interesting to see this advancement]
#GIS #spatial #mapping #earthquake #earthquakepreparedness #fault #faulting #paleoseismology #Korea #SouthKorea #glacial #sediments #interglacial #faultgouge #climatechange #SLR #sealevel #sealevelrise #stressfield #changes #spatiotemporal #KoreanPeninsula #paleoearthquake #faultzones #dating #quartz #differentialstress #Quaternary #ESR #dating #periodicity #spatialanalysis #spatiotemporal #geology #engineeringgeology

Tree Rings Reveal A New Kind Of Earthquake Threat To The Pacific Northwest
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https://phys.org/news/2023-09-tree-reveal-kind-earthquake-threat.html <-- shared technical article
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https://doi.org/10.1126/sciadv.adh4973 <-- shared paper
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[as someone who has dove many, many times in the PNW, I am not sure I want that collection task ~wink~ ]
#GIS #spatial #mapping #PNW #earthquake #fault #faulting #paleoseismology #PacificNorthwest #treering #dating #relativedating #shallowfaults #model #modeling #naturalhazard #engineeringgeology #seismicevent #PugetSound #treeringdating #hazard #riskhazard #hazardmodel #regionalhazard #threat

This week, we visited a gallo-roman site (Villards-d’Heria) located on a potentially active fault in the Jura Mts 🇫🇷.

There are definitely disorders on archeological remnants that need to be investigated 🧐.

#Archeoseismology #ActiveTectonics
#paleoseismology

Hi

I’m migrating from twitter and hope to find here new and old friends/colleagues.

I mostly post about #earthquake #geology, #paleoseismology and #seismic #hazard.
I 😍 field work! And outdoor activity in general (🚲 🏃‍♂️ 🏊‍♀️).

I work at the French Institute for Nuclear Safety (IRSN https://www.irsn.fr/) and run my research worldwide.

I study #Paleoseismology, and #EarthquakeGeology. To study the faults and earthquakes that happened decades, centuries, or thousands of years back, we generally do excavations. These will expose the sediments and rocks deformed allowing us to infer how much deformation a given earthquake caused, its likely magnitude, and when did it happen. Thus, telling us how BIG and FREQUENT earthquakes can be on that fault (at that location). This is much needed to help understand hazards and mitigate risk.

Hi everyone! I am an #earthquake #geologist and #earth #scientist currently based in #Oxford, UK. I work on #activefaults, #paleoseismology, and #tectonics problems around the world, but particularly in #CentralAsia and in the western USA. I did my PhD in #Reno #Nevada and my undergraduate in #Humboldt #California.