Robin Lacassin
@rlacassin.bsky.social
Institut de Physique du Globe de Paris (IPGP - CNRS). Geology, tectonics, earthquakes, hazard epistemology & com. ⚒️ 🧪 Also: @RobinLacassin@qoto.org https://www.ipgp.fr/~lacassin/RL-TectoniqueIPGP https://tectoldies.mystrikingly.com/
An #earthquake of magnitude 6.8 happened close to Kumamoto in the island of Kyushu (SW Japan). Japan is prone to frequent subduction earthquakes, but in this case, the shallow hypocenter depth and strike-slip mechanism imply a rupture in the upper plate. ⚒️ 🧪
Earthquake information from Geoscope Observatory@geoscope-ipgp.bsky.social · last wk.Mw=6.8, KYUSHU, JAPAN (Depth: 17 km), 2026/07/28 07:27:15 UTC - Full details here: http://geoscope.ipgp.fr/scripts/seismes/fiche.php?seis=us6000tgb9
Yesterday afternoon 14:09 in Lacanau Océan in France. A pale red sun through the smoke tinged everything in Mars style orange. Welcome in the climate emergency! Despite all denial of the fossil fuel lobby, it’s scientific fact: CO2 emissions heat up Earth & make fires worse. 🔥🔥🔥
Lacanau Océan 24 juillet 2026.🔥🆘 L’augmentation des températures globales due à la combustion d'énergies fossiles rend plus intense/probable l'asséchement de la végétation (y compris à pluviométrie annuelle constante), nourrissant ensuite des incendies XXL.
Prof. Stefan Rahmstorf@rahmstorf.bsky.social · 2w agoDystopia in action 👇 We are in #climate emergency.
Prof. Stefan Rahmstorf@rahmstorf.bsky.social · 2w agoHoliday in the climate emergency. No that’s not AI or edited, just a snapshot I just took with my phone on Lacanau beach in France. What future will this boy grow up in? It is in our hands, but time is running out.
The areas affected by the #Fontainebleau forest #wildfires (3 Pignons and Faisanderie fires) are highly visible – in dark brown and red – on the Sentinel-2 satellite image @esa.int @copernicusland.bsky.social from July 20, 2026 👇. Over 10% of the Fontainebleau forest has been burned. ⚒️ 🧪
Robin Lacassin@rlacassin.bsky.social · 2w agoLes zones affectées par les #incendies de la forêt de #Fontainebleau (feux des 3 Pignons et de la Faisanderie) sont très visibles – en brun et rouge sombre – sur l'image satellitaire Sentinel2 (@esa.int @copernicusland.bsky.social) du 20 Juillet 2026. ⚒️ 🧪
Les zones affectées par les #incendies de la forêt de #Fontainebleau (feux des 3 Pignons et de la Faisanderie) sont très visibles – en brun et rouge sombre – sur l'image satellitaire Sentinel2 (@esa.int @copernicusland.bsky.social) du 20 Juillet 2026. ⚒️ 🧪
The 3 Pignons #wildfire, west of #Fontainebleau, as seen by Sentinel 2 (SWIR composition). Burnt and burning areas in brown and orange. We are in a #climate emergency. Combination of severe #drought and #heatwave. ⚒️ 🧪
La forêt de #Fontainebleau brûle. L’ #incendie aux 3 Pignons (ouest de Fontainebleau) a produit un panache de fumée très visible sur les images satellite hier soir 👇. Nous sommes en #urgenceclimatique, #climat. #Sécheresse extrême et #canicule sur une grande partie de la France.
The emblematic #Fontainebleau forest is burning. The #wildfire in the 3 Pignons forest (western Fontainebleau) produced a smoke plume clearly visible in satellite imagery yesterday evening 👇. I'm leaving there 😢 We are in a #climate emergency. Severe #drought and #heatwave over most of France. ⚒️ 🧪
Un collectif d’universitaires s’inquiète de la mise au pas idéologique et de l’asphyxie budgétaire qui menacent le monde de la recherche scientifique aux Etats-Unis, mais aussi en Europe. www.lemonde.fr/idees/articl...
« Le technosolutionnisme évince le débat démocratique et l’action politique »
TRIBUNE. Un collectif d’universitaires s’inquiète, dans une tribune au « Monde », de la mise au pas idéologique et de l’asphyxie budgétaire qui menacent le monde de la recherche scientifique aux Etats...
lemonde.fr
"AI might make it easier to do science while, at the same time, narrowing the questions and styles of reasoning that are collectively pursued." 🧪 www.nature.com/articles/d41...
Will AI spark a scientific renaissance — or a diffuse monoculture?
Artificial intelligence’s ability to enrich science will depend not only on model capability, but also on whether researchers, reviewers and funders reward originality over speed.
nature.com
What have we learned about the deadly Venezuela earthquake in the last day and a half? A lot, actually. earthquakeinsights.substack.com/p/early-scie...
Early scientific picture of the deadly Venezuela earthquake emerges
Eastward rupture from the Boconó fault onto the San Sebastián fault
earthquakeinsights.substack.com
Dr. Judith Hubbard@judithgeology.bsky.social · last mo.⚒️ 🧪 A catastrophic earthquake just struck northern Venezuela. Large buildings have collapsed, and the USGS PAGER is forecasting thousands of fatalities. Our colleague in Caracas, Dr. Frank Audemard, has shared with us what the earthquake felt like and footage from the region. Here’s what we know.
Composite plot of the two coseismic interferograms (Sentinel-1, from Copernicus) with the USGS epicenters of the two earthquakes and faults from GEM. The shoreline San Sebastián fault lines up with the fringes in the west and is probably the fault responsible.
⚒️ 🧪 A catastrophic earthquake just struck northern Venezuela. Large buildings have collapsed, and the USGS PAGER is forecasting thousands of fatalities. Our colleague in Caracas, Dr. Frank Audemard, has shared with us what the earthquake felt like and footage from the region. Here’s what we know.
Catastrophic M7.5 earthquake strikes northern Venezuela
Severe damage; collapsed buildings; significant fatalities possible
earthquakeinsights.substack.com
Geoscope @ipgp.bsky.social modeled the #Venezuela doublet as a single #earthquake with a long complex source time function 👇 with magnitude Mw 7.8, quite large. Together with other prelim. seismological analyses (thread below) it suggests a ~200km long rupture on the E-W El Pilar Fault. ⚒️ 🧪 - 1/n
Earthquake information from Geoscope Observatory@geoscope-ipgp.bsky.social · last mo.Mw=7.8, NEAR COAST OF VENEZUELA (Depth: 12 km), 2026/06/24 22:04:32 UTC - Full details here: http://geoscope.ipgp.fr/scripts/seismes/fiche.php?seis=us6000t7zc
Extreme Heat event cancelled because of extreme heat 🤐
Grantham Research Institute at LSE@granthamlse.bsky.social · last mo.We regret that our event on Extreme Heat: Improving governance and strengthening action around the world has been cancelled due to the red extreme heat warning issued by the UK Met Office. Our apologies to everyone who was planning to attend the event.
🌡️ Les températures continuent d'atteindre un niveau de chaleur exceptionnel. Mercredi et jeudi, les maximales grimpent toujours à plus de 40 °C... De nombreux départements restent en Vigilance canicule. Soyez prudents ! Point météo : meteofrance.com/actualites-e...
Today France recorded temperatures equivalent to those in the Sahara desert. Look to the zones in light pink on the map below (from @infoclimat.fr) ! Terrible #heatwave. We are in a #climate emergency and this is the result of decades of political inaction and big oil denialism. 1/3
🔴🟠Les températures montent encore d’un cran à partir d’aujourd’hui pour atteindre un “plateau” très élevé au moins jusqu’à jeudi. De nombreux départements sont en Vigilance canicule rouge ou orange. Le point complet 👉 meteofrance.com/actualites-e...
France will be at the epicenter of the most significant heat anomaly on the planet over the next few days. The sheer extent of the country that could experience temperatures above 40°C is nothing short of astonishing.
Can you see the anomaly 👇 ? On temperature forecasts for Tuesday France has same colour than the belt of deserts in Africa and Arabia. Not normal. We are in a #climate emergency. And our politics are denying or minimising the problem because "it's the economy, stupid", to enrich the rich ☠️
40-42°C is 104-108°F. Like at the Grand Canyon www.theguardian.com/us-news/2026... But the buildings in France suck for such temperature - too much concrete, too little shade & insulation, wrong orientation of windowed facades. Ignorance? Or done to maximize sale of nuclear electricity in winter...
Grand Canyon on ‘extreme heat’ watch, with temperatures set to soar
Temperatures could top 111F on Monday and Tuesday, after several recent deaths in park raise concerns over heat
theguardian.com
Robin Lacassin@rlacassin.bsky.social · 2mo agoNo comment 😱 👇 (forecasts for next Monday) We are in a #climate emergency.
Une action concertée au niveau international et des efforts de coordination sont indispensables pour garantir la continuité et l'intégrité des observations du climat. Merci de votre attention.
Aujourd'hui, nous publions la réactualisation annuelle (depuis le 6ème rapport du GIEC publié en 2021, AR6) des indicateurs clés de l'état du climat planétaire jusqu'en 2025, le travail de 73 scientifiques de 56 institutions et 17 pays : essd.copernicus.org/articles/18/... 1/...
I had the opportunity for a quick tour of the (relatively) new rock mechanics lab at the USGS Moffett Field campus. The work they do to understand earthquake physics at small scale of a block of granite is mind boggling.
⚒️ 🧪 A M7.8 earthquake occurred beneath the southern Philippines today; the USGS estimates that 1 million people experienced severe shaking; footage shows collapsed buildings. The earthquake occurred within the east-dipping subducting plate that underlies the island.
Deadly M7.8 earthquake rocks southern Philippines
Related to eastward subduction beneath Mindanao
earthquakeinsights.substack.com
🆕 🔔 🆕 We are delighted to announce the publication of our first FIELD GUIDE PAPER by @rlacassin.bsky.social et al. It's about the 464 BCE Sparta #earthquake in southern Greece and associated active faulting - #DOAJ #tectonics ⚒️ tektonika.online/index.php/ho...
After the remarkable account of the 2023 tsunami and seiche in N Greenland, another astonishing article that resembles a forensic examination 👇. A wide range of analytical methods to study a monster #tsunami within an Alaskan fjord. Fascinating. Kudos @watershedlab.bsky.social and co-authors !
Dr Dan Shugar 🇨🇦@watershedlab.bsky.social · 3mo ago🚨New paper about the second largest tsunami ever recorded, just published in @science.org A short 🧪⚒️🌊 thread #EGU26 @ucalgary.bsky.social @ucalgaryscience.bsky.social doi.org/10.1126/scie...
