Sign in

Robin Lacassin

@rlacassin.bsky.social
3.2K followers 132 following 750 posts

Institut de Physique du Globe de Paris (IPGP - CNRS). Geology, tectonics, earthquakes, hazard epistemology & com. ⚒️ 🧪 Also: @RobinLacassin@qoto.org www.ipgp.fr/~lacassin/RL-Tectonique… tectoldies.mystrikingly.com

PostsRepliesMedia
Robin Lacassin @rlacassin.bsky.social · 7h
www.theguardian.com/commentisfre... After huge demonstrations yesterday: "As the social contract in France comes under increasing strain, the voice of its protesting students needs to be heard."
theguardian.com
The Guardian view on the French school protests: the political class needs to heed the voice of students | Editorial
Editorial: A generation facing unprecedented challenges deserves better than an underfunded education system
010
Reposted by Robin Lacassin
David Ho @davidho.bsky.social · 06/10/2026
It’s a quintessential French experience when your institution is blockaded by protesting students. This is precisely what American students should have done when their institutions began capitulating to the Trump regime.
1659596
Robin Lacassin @rlacassin.bsky.social · 8h
Day 3 #Nobel gender imbalance 0 ♀️ 5 ♂️ (And mind you, I don't want to diminish the merit of the male winners) bsky.app/profile/nobe...
021
Robin Lacassin @rlacassin.bsky.social · 8h
Day 2 #Nobel 0 ♀️ 4 ♂️ bsky.app/profile/nobe...
000
Reposted by Robin Lacassin
LDH @ldh.fr · 06/10/2026
La société civile agit en protection des mouvements de la jeunesse partout en France !
Cortège LDH dans la manifestation parisienne
09744
Robin Lacassin @rlacassin.bsky.social · 05/10/2026
Day 1 #Nobel 0 ♀️ 3 ♂️ bsky.app/profile/nobe...
100
Robin Lacassin @rlacassin.bsky.social · 05/10/2026
The #Nobel season is underway. Will we see #gender parity this year 🤔 ?
110
Reposted by Robin Lacassin
LDH @ldh.fr · 01/10/2026
🔴 Communiqué LDH | La mobilisation de la #jeunesse contre le manque de moyens et pour bénéficier d’une #éducation effective doit trouver une réponse politique et non policière ! Cette répression brutale est contraire aux principes d’un Etat démocratique. #violencespolicières www.ldh-france.org/h...
Halte à la brutalisation de la jeunesse
3235158
Robin Lacassin @rlacassin.bsky.social · 02/10/2026
Reference site to follow evolution of Swiss glaciers is: www.glamos.ch#/B36-26 🏔️ ⚒️
Screenshot of the Swiss Glacier web pages, showing the length evolution of the Gross Aletschgletscher
000
Robin Lacassin @rlacassin.bsky.social · 02/10/2026
Switzerland has lost almost one-fifth of its ice in just five years… 👇 "What we are seeing now is a complete explosion of these melt rates, leading to the disintegration of glaciers…" 🏔️ ⚒️ www.theguardian.com/environment/...
theguardian.com
‘Explosion of melt rates’: 20% of Swiss glaciers lost in five years
Alpine regions in Europe experiencing extreme glacier collapse due to heat-trapping effects of fossil fuel pollution
163
Reposted by Robin Lacassin
Dr. Serge Zaka @sergezaka.bsky.social · 30/09/2026
Une alerte météorologique "extrême", pour reprendre le terme du message FR-Alert reçu sur les téléphones pour toute la population, est en cours dans le Gard et l'Hérault. Les dernières prévisions sont terrifiantes entre 300 et 400mm de pluie en villes. La population est invitée à se confiner.
16331188
Reposted by Robin Lacassin
Yann Klinger @yklinger.bsky.social · 23/09/2026
In case any one doubts that geomorphology and paleoseismology are unrelated. Trenching the Fuyun fault now.
32312
Robin Lacassin @rlacassin.bsky.social · 26/09/2026
Marche pour le #climat à #Fontainebleau
142
Reposted by Robin Lacassin
Tektonika DOAJ @wearetektonika.bsky.social · 23/09/2026
🔔 🆕 A second FIELD GUIDE PAPER is published in Tektonika #DOAJ ! It's about the High Arctic Large Igneous Province #HALIP. K. Senger et al. "A Field Guide to the High Arctic Large Igneous Province In and Around Isfjorden #Svalbard" #tectonics ⚒️ tektonika.online/index.php/ho...
3D representation of igneous complex with location of the different stops described in the field guide.
062
Robin Lacassin @rlacassin.bsky.social · 22/09/2026
A story reminiscent of L' #Aquila case 👇 It's about the 2017 rock avalanche at Piz Cengalo that triggered a massive debris flow, killing 8 and damaging part of the village of Bondo (SE Switzerland). ⚒️ www.science.org/content/arti...
science.org
Swiss trial for 2017 avalanche deaths unsettles hazard researchers
Geologist and officials were acquitted last week, but scientists fear future liability for failing to predict similar disasters
010
Reposted by Robin Lacassin
Dr. Serge Zaka @sergezaka.bsky.social · 18/09/2026
Tous les facteurs d'une crise agricole majeure sont en train de se conjuguer.
14550386
Reposted by Robin Lacassin
Science Magazine @science.org · 28/08/2026
Hundreds of scientists around the globe have been working tirelessly to piece together the sequence of events that led to the devastating flood in Tibet and Nepal, which has killed nearly 600 people, left nearly 2000 missing, and destroyed many towns and hydropower plants. scim.ag/3SErvn3
scim.ag
How scientists unraveled the cause of the devastating flood in Tibet and Nepal
Global cooperation revealed a landslide, not a glacial collapse, likely initiated the cascade of events
38840
Reposted by Robin Lacassin
Valérie Masson-Delmotte @valmasdel.bsky.social · 27/08/2026
La catastrophe au Népal a été induite par un effondrement de glacier du Langtang Lirung, à une altitude d'environ 5200 mètres. Que sait-on du lien avec le réchauffement climatique dû aux activités humaines pour les glaciers de ce secteur ? 1/...
12766531
Robin Lacassin @rlacassin.bsky.social · 27/08/2026
Excellent article in @theguardian.com about the catastrophic glacial collapse and flash flood in Tibet and Nepal. www.theguardian.com/world/2026/a...
theguardian.com
How the deadly Nepal and Tibet flash flood unfolded – a visual guide
US Geological Survey says massive glacial collapse caused catastrophic flash floods in the Himalayan border region of Nepal ⁠and Tibet
01813
Reposted by Robin Lacassin
Stephen Hicks @seismo-steve.bsky.social · 27/08/2026
Dreadful scenes from the devastating Rasuwa flood in Nepal/Tibet. My heart goes out to everyone affected. It likely began with a glacier collapse / rock–ice avalanche recorded by seismometers worldwide. I hope real-time seismic monitoring can support early warning for communities downstream.
24319
Reposted by Robin Lacassin
Dr. Wendy Bohon @drwendyrocks.bsky.social · 26/08/2026
Some early reports said that the horrifying flooding in Nepal was the result of an earthquake. However, the signal was actually the recording of the landslide. TL:DR - there was no earthquake, it was a landslide. earthquake.usgs.gov/earthquakes/...
Screen shot showing the USGS event page. The landslide released the same amount of energy as a M5.2 earthquake
7274105
Reposted by Robin Lacassin
Henning @geohenning.bsky.social · 13/08/2026
A new video emerged which seems to show a surface rupture in Yatsushiro, Japan following the M6.8 earthquake in July! Exact location of the video would be 32°30'04.0"N 130°38'29.9"E. Absolutely wild. Only the second ever video of a surface rupture forming after the 2025 Myanmar video! ⚒️🧪 #geology
17577212
Robin Lacassin @rlacassin.bsky.social · 28/07/2026
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. ⚒️ 🧪
163
Reposted by Robin Lacassin
Prof. Stefan Rahmstorf @rahmstorf.bsky.social · 25/07/2026
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. 🔥🔥🔥
6722301054
Reposted by Robin Lacassin
Francois Jobard @francoisjobard.bsky.social · 24/07/2026
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.
1113374
Robin Lacassin @rlacassin.bsky.social · 27/07/2026
Dystopia in action 👇 We are in #climate emergency.
000
Robin Lacassin @rlacassin.bsky.social · 21/07/2026
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. ⚒️ 🧪
020
Robin Lacassin @rlacassin.bsky.social · 21/07/2026
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. ⚒️ 🧪
Image satellite sur laquelle les zones brulées apparaissent en brun et rouge. Le reste de la forêt de Fontainebleau est en vert vif. Les villes de Melun, Fontainebleau et Nemours sont situées sur l'image. Le cours sinueux de la Seine est très visible aussi.
062
Robin Lacassin @rlacassin.bsky.social · 14/07/2026
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. ⚒️ 🧪
Satellite image from the Sentinel satellite
071
Robin Lacassin @rlacassin.bsky.social · 13/07/2026
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.
Image satellite du 12 Juillet au soir montrant le panache de fumées à l'ouest de la forêt de Fontainebleau
010
Robin Lacassin @rlacassin.bsky.social · 13/07/2026
* I live there (and not "leaving"…)
000
Robin Lacassin @rlacassin.bsky.social · 13/07/2026
Map from @lemonde.fr showing #wildfire location south of Paris. The 3 Pignons fire is the one west of #Fontainebleau
Maps showing wildfire location in red
031
Robin Lacassin @rlacassin.bsky.social · 13/07/2026
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. ⚒️ 🧪
Map from weather satellite showing the plume of smoke south of Paris. The shadow of the plume is also visible.
273
Robin Lacassin @rlacassin.bsky.social · 30/06/2026
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...
lemonde.fr
« 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...
000
Robin Lacassin @rlacassin.bsky.social · 30/06/2026
"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...
nature.com
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.
100
Reposted by Robin Lacassin
Dr. Judith Hubbard @judithgeology.bsky.social · 26/06/2026
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...
earthquakeinsights.substack.com
Early scientific picture of the deadly Venezuela earthquake emerges
Eastward rupture from the Boconó fault onto the San Sebastián fault
34326
Robin Lacassin @rlacassin.bsky.social · 26/06/2026
bsky.app/profile/gfun...
000
Reposted by Robin Lacassin
Gareth Funning @gfun.earth · 25/06/2026
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.
23022
Robin Lacassin @rlacassin.bsky.social · 26/06/2026
👍 thanks for sharing Gareth. It seems fringes support models with rupture predominantly eastward from the epicenter, and apparently reaching Caracas, thus ~200km long. Am I right?
100
Reposted by Robin Lacassin
Dr. Judith Hubbard @judithgeology.bsky.social · 25/06/2026
⚒️ 🧪 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.
earthquakeinsights.substack.com
Catastrophic M7.5 earthquake strikes northern Venezuela
Severe damage; collapsed buildings; significant fatalities possible
11370240
Robin Lacassin @rlacassin.bsky.social · 25/06/2026
bsky.app/profile/judi...
140
Robin Lacassin @rlacassin.bsky.social · 25/06/2026
bsky.app/profile/judi...
130
Robin Lacassin @rlacassin.bsky.social · 25/06/2026
bsky.app/profile/bert...
130
Robin Lacassin @rlacassin.bsky.social · 25/06/2026
bsky.app/profile/bert...
120
Robin Lacassin @rlacassin.bsky.social · 25/06/2026
A question to seismologists: why the @geoscope-ipgp.bsky.social magnitude is so large (Mw 7.8) compared to other analyses ? Could it be an effect of the Mw6.9 #earthquake in Japan 25 minutes later? ⚒️ 2/n
141
Robin Lacassin @rlacassin.bsky.social · 25/06/2026
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
11512
Robin Lacassin @rlacassin.bsky.social · 23/06/2026
Extreme Heat event cancelled because of extreme heat 🤐
020
Reposted by Robin Lacassin
Météo-France @meteofrance.com · 23/06/2026
🌡️ 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...
Episode caniculaire sur l'HexagoneEpisode caniculaire sur l'HexagoneEpisode caniculaire sur l'Hexagone
47434
Robin Lacassin @rlacassin.bsky.social · 23/06/2026
Another map of France with all the stations that broke their temperature record for the month of June. We still have extreme temperatures forecast through the end of the week, at least... #heatwave #climate emergency 3/3
A map of France showing all the stations that broke their temperature record for the month of June
010
Robin Lacassin @rlacassin.bsky.social · 23/06/2026
On this map of France 👇, all dots correspond to stations with temperatures above 40°C at 17:00 local time. (map from @infoclimat.fr) #heatwave #climate emergency 2/3
Map of France showing all stations that recorded temperatures above 40 degrees celsius
140