🌊 200 000 fûts de déchets radioactifs immergés dans l'Atlantique : que sont-ils devenus ? 🎙️ Benoît Ildefonse (Géosciences Montpellier) raconte la mission océanographique NODSSUM dans À l'UM la science. 🎧 divergence-fm.org/podcasts/des...

Des déchets nucléaires au fond de la mer - Divergence FM

Cette semaine dans A l’UM la science, Benoit Ildefonse, chercheur au laboratoire Géosciences Montpellier, nous raconte la mission Nodssum dédiée au suivi de déchets radioactifs en mer. Le reportage no...

divergence-fm.org

The news is out today in @nature.com ! The OHA-GEODAMS observatory had the incredible luck to capture a major seafloor spreading event back in 2024, just 2 months after its deployment. You can read all about it at: www.nature.com/articles/s41... Here’s how it unfolded 👇

Anatomy of a seafloor spreading event captured by in situ seismogeodesy - Nature

By combining hydroacoustic, direct-path ranging and bottom-pressure measurements, in situ observations of a rifting event at a segment of the Southeast Indian Ridge are reported, providing insight int...

nature.com

The #NODSSUM docked @ Brest Sun 28th. Exciting science: 19 Nautile dives to 4700 m, more than 100 barrels imaged, sediment, biota & water filter, coring, fish traps... peek to photos & videos for a week here: www.swisstransfer.com/d/22d399c8-a... From tomorrow here: sdrive.cnrs.fr/s/t7jH3ofqfk...

And after a night camera tow photographing the seafloor, a last, short Nautile dive for the #NODSSUM cruise - over a whale fall and its ecosystem and final inspection of radioactive waste barrels. Now en route to Brest: writing, packing, back ups of data, cleaning labs… ETA Sunday afternoon

Thanks to the use of the submersible Nautile, the #NODSSUM campaign have been able to collect samples from the barrels as well as seawater, sediment and marine organisms. At each return of Nautile from a dive, radiation levels on the sub and in the samples are controlled by the radioprotection team.

Rainy day start - with preps for the #NODSSUM cruise dive 2194, 16th of this cruise: launch the elevator to 4700 m with corers for Nautile, checks on the sub, prep of the basket… and the tool shack.

Catching up on #NODSSUM cruise - on instruments we deploy, and starting with water pumps, lowered either in moorings or attached to the ship's. Run by DT-INSU (CNRS), they pump around 1000 litres over 4hrs & capture radionuclides & organic matter w/ special filters to be later analysed.

Sediments provide a good environmental record of both natural and artificial radionuclides. To sample them, #NODSSUM deploys from the ship a coring system with multiple tubes, that preserves the interface between water and sediment, critical to our studies. 7 coring sites to date, more to come.

And during #NODSSUM, to gather additionnal images from biota, ecosystems, and dumped radioactive waste barrels, the deep-sea camera system SCAMPI, that flies two to three meters above the seafloor, taking snaps every 10 seconds, over several km, towed behind the ship.

The #NODSSUM cruise reaches cruise speed. Three Nautile dives have recovered sediment, biologic specimens, water, and video of dumped barrels and ecosystems- plus towed camera runs and fish traps (2 abyssal grenadines to date) - with fair weather ahead after a stormy start.

#NODSSUM Pourquoi Pas? is in stand by - waiting on weather (WOW), with a depression passing over us. Sunday we plan our first Nautile dive after 1 week of unfriendly seas, and operations will start rolling. 1st dive over one of the selected radioactive waste barrel sites

#NODSSUM a week away from departure for 2nd NODSSUM cruise @ NE Atlantic nuclear waste dump site we visited last year. Last-minute prep w/ transport of cruise material towards Brest - Including an important box just received. W/ the French Oceanographic Fleet, onboard #pourquoipas + #nautile

#RésultatScientifique Les carottes de glace❄️du #Groenland montrent que pdt la dernière période glaciaire les quantités de dépôts de poussières minérales, bien + élevées qu'aujourd'hui, variaient très rapidement lors de changements climatiques abrupts. ⤵️ www.insu.cnrs.fr/fr/cnrsinfo/...

Offre d'emploi : et si votre prochain poste vous emmenait sur le #Larzac ? Le @cnrs.fr recrute un·e assistant·e ingénieur·e en instrumentation et techniques expérimentales (CDD 1 an). Poste basé à #Montpellier (@geomontp.bsky.social), avec des missions de terrain sur le Larzac 👇 Offre dans le thread

🌍 Ces travaux de recherche ont été menés par les laboratoires Géoazur et @geomontp.bsky.social @cnrs.fr @univcotedazur.bsky.social @ird-fr.bsky.social @obscoteazur.bsky.social

CNRS Terre & Univers@cnrs-insu.bsky.social · last yr.

#RésultatScientifique 🏔️🛰️ Des scientifiques démontre que le séisme du Teil, un des derniers séismes importants en France, a été en grande partie contrôlé par la nature des roches dans lesquelles il s’est produit. L’étude utilise des données d'Epos-France. ➡️ www.insu.cnrs.fr/fr/cnrsinfo/...

On y sera ! Venez nous retrouver au village des sciences sur le stand "La science au comptoir". Avec @osuoreme.bsky.social #hydrosciencesMontpellier #cefe #Lump 😍

Université de Montpellier@umontpellier.bsky.social · last yr.

#FDS2025 | 34ème Fête de la Science : l’Université de Montpellier met à l’honneur les « intelligence(s) ». Pour la 10ème année consécutive, l’UM assure la coordination de la Fête de la Science dans l’Hérault 📆 4 & 5 octobre 📌 @fac-education.bsky.social 🔗 + infos www.umontpellier.fr/articles/34e...

Partagez ! nous sommes tous concernés. Super soirée en perspective, organisée par #BioGée #SociétéGéologiqueDeFrance #GéosciencesMontpellier

📣 [new paper @GeoMontp] "Amazonia in Cambrian times: reconciling discordant palaeomagnetic dataset with a geocentric axial dipole?" P.Y.J. Antonio, C. Rossignol, L. Gallo, ... 😏 only 18 days to wait before you can read the full text! @cnrsoccitanieest @umontpellier.bsky.social ▶️ bit.ly/47KuGPw

📣 [new paper @GeoMontp] "Abrupt changes in continental sedimentation triggered by monsoon-type event during EECO hyperthermals, Minervois Basin, Southern France" Cindy Boyrie, F. Girard, J. Yans, G. Ballas, F. Lihoreau, ... @cnrsoccitanieest @umontpellier @isemevol.bsky.social ‬ ▶️ bit.ly/46fYHEt

Abrupt changes in continental sedimentation triggered by monsoon-type event during EECO hyperthermals, Minervois Basin, Southern France

Recent studies on Early Eocene climate have established that global climatic warming, characterized by negative carbon isotopic excursions (CIE, hyper…

bit.ly

📣 [new paper @GeoMontp] "Abatement of micropollutants and formation of transformation products in municipal wastewater effluent during ozonation" Téo Ferreux, G. Duporté, L. Luquot, ... @cnrsoccitanieest @umontpellier @HydroSciencesMp @igmm-montpel.bsky.social ‬ ▶️ bit.ly/3JQw0q0

Abatement of micropollutants and formation of transformation products in municipal wastewater effluent during ozonation: Complementarity of targeted and non-targeted analyses

A comprehensive approach combining target analysis, non-target screening, and suspect screening was employed to assess the effectiveness of ozonation …

bit.ly

Le 19 août est la Journée mondiale de la photographie, née en 2010. C’est ce jour-là, en 1839, que le daguerréotype, l’un des tout premiers procédés photographiques, fut présenté à l'Académie – et placé dans le domaine public. Retrouvez tous nos contenus pour ouvrir de grands yeux avec la science.

Photographie : les sciences en prennent plein la vue

lejournal.cnrs.fr

📣 [new paper @GeoMontp] "Full size cave 3D modelling using close range photogrammetry & comparison with laser scanning" Gael Cazes, Philippe Vernant, François Baleux, Carla Giuliani, Johan Jouves & al. @cnrsoccitanieest @umontpellier @umr5608traces.bsky.social‬ ▶️ dx.doi.org/10.1007/s125...

Full size cave 3D modelling using close range photogrammetry and comparison with laser scanning - Applied Geomatics

Although underground topography methods have significantly evolved in the past two decades, it is still challenging and often costly to create comprehensive 3D models of caves or artificial cavities. ...

dx.doi.org

📣 [new paper @GeoMontp] "40Ar/39Ar dating of poly-orogenic rocks: an example from the Cap de Creus peninsula (#EasternPyrenees #Spain)" Patrick Monié, Émilien Oliot, Gaétan Milesi, Maël Allard & Agathe Faucher. @cnrsoccitanieest @umontpellier ▶️ doi.org/10.1016/j.js...

📢 Paper alert: Abrupt changes in continental sedimentation triggered by monsoon-type event during EECO hyperthermals, Minervois Basin, Southern France doi.org/10.1016/j.se... @cnrsecologie.bsky.social @univpoitiers.bsky.social @isemevol.bsky.social @geomontp.bsky.social

📣 [new paper @GeoMontp] "Hydration State and Updip Fluid Migration in the Slab Mantle" Nestor G. Cerpa & Ikuko Wada. @cnrsoccitanieest @umontpellier @egu.eu @UMNEarthScience ▶️ doi.org/10.1029/2024...

Hydration State and Updip Fluid Migration in the Slab Mantle

Dehydration in the subducting mantle can lead to updip fluid migration along the dehydration front within the slab mantle Updip fluid migration in the slab mantle is more likely for younger (<∼30...

doi.org

📣 [new paper @GeoMontp] "Tracking the Caribbean Magmatic Evolution: The British Virgin Islands as a Transition Between the Greater and Lesser Antilles Arcs" Noémie Bosc, D. Bosch, M. Noury, O. Bruguier, L. Montheil,... @cnrsoccitanieest @umontpellier @egu.eu ▶️ doi.org/10.1029/2024...

📣 [new paper @GeoMontp] "Strain localization via mechanical mixing and metasomatism: an example from the metagabbros of Marine de Giottani, Alpine Corsica, France" Bénédicte Cenki, É. Oliot, F. Gueydan, L. Nègre & J. A. Padrón-Navarta. @cnrsoccitanieest @umontpellier ▶️ bit.ly/45f42MO

📣 [new paper @GeoMontp] "Xonotlite and pectolite in rodingites from the Samail ophiolite: Markers of reducing conditions and element transfer during peridotite-gabbro interaction" Alireza Eslami, B. Malvoisin, M. Fukuyama, M. Godard,... @cnrsoccitanieest @umontpellier ▶️ doi.org/10.1016/j.li...

Don't forget! Tomorrow at 4pm CEST !

Géosciences Montpellier@geomontp.bsky.social · last yr.

🌍 Climate of the Past webinar #2 @egu.eu‬ 23 July at 16:00 CEST 👉Helle Astrid Kjaer (Univ. of Copenhagen) Sea ice and abrupt change- a land ice core perspective. 👉David Naafs (Univ. of Bristol) Novel biomarker-based insights into the operation of the terrestrial methane cycle across the Cenozoic.