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#etna — Public Fediverse posts

Live and recent posts from across the Fediverse tagged #etna, aggregated by home.social.

  1. C'est #martdi ! Voici une fresque de la cathédrale de Catane, attribuée à Giacinto Platania, qui représente l’éruption de 1669, avec l’arrivée de la lave contre les murs de la ville.
    #art #fresque #peinture #Sicile #Etna #Catane

  2. Mount Etna on the island of Sicily is one of the world’s most active volcanoes.

    The stratovolcano has erupted around 200 times since its first recorded eruption in 1500 BCE.

    Its summit height varies by dozens of metres due to the eruptions but is over 3350 metres.

    #FactOfTheDay #Etna #Volcano

  3. #VendrediLecture
    Dans "Les dentelles noires de l’Etna", le physicien Jean Lautier-Gaud romance une mission (bien réelle) au cours de laquelle un gravimètre quantique fut installé à 2 800 mètres d’altitude sur le volcan sicilien. Si l’auteur abuse parfois des monorèmes, ses phrases courtes confèrent au récit un style percutant. On suit avec plaisir son alter ego dans sa découverte de Catane, ville profondément marquée par des siècles de coexistence avec l’Etna. L’auteur convoque tour à tour de multiples figures qui donnent vie à cette aventure scientifique : poètes antiques, mamma sicilienne, volcanologues, barista… Sans oublier l’Etna, personnifié comme jamais, qui met du temps à sortir des nuées pour mieux se dévoiler dans toute sa grandeur. On pourra regretter que les premiers résultats de cette mission, pourtant publiés en 2022, ne soient pas intégrés à ce récit. Il n’en constitue pas moins une façon originale et réjouissante de faire sortir la science des laboratoires !
    transboreal.fr/librairie.php?c
    #Etna #Sicile #livre #lecture #physique

  4. Sur l'Etna, une équipe teste un robot chien capable d'aller renifler les gaz volcaniques. Au-delà de la performance robotique (progression en terrain meuble), je m'interroge toutefois sur la pertinence de ce dispositif : les drones font déjà ça très bien et ont l'avantage de pouvoir voler à travers le panache de gaz à échantillonner... Une histoire d'autonomie peut-être ? J'imagine que ce robot doit pouvoir emporter des batteries plus lourdes.
    youtube.com/watch?v=GxCt02uHMAE
    2/4
    #robot #Etna #gaz

  5. 🔴 #A7Radio > #News > #Volcan
    buff.ly/AsIsLjH

    📌 L'INGV confirme une coulée pyroclastique dû à un effondrement du flanc nord du cratère sud-est du volcan #Etna 🌋
    📸 Par Roberta Tartoni

    Des touristes étaient sur place au moment de la coulée, esperont qu'il n'y ait aps trop de victimes..

    #Mastodon #World #Photography #Live #Music #Podcasts #France #Nowlistening #NowWatching #Nowplaying #Blogger #Italy #Vulcano #Earthquake #Weather

  6. I'm going to take advantage of the current #eruption on Mt #Etna to discuss some of the challenges of #modelling #lava flows. Buckle up (or just silence me) because this is going to be a long thread.

    First of all, why do we want to model lava flows? The answer most definitely isn't «because we can», since —as I'm going to explain momentarily— we actually cannot. Still having an idea about how lava flows and sets in place is a powerful tool for the assessment (and possibly mitigation) of the associated #hazard and #risk: if we can tell how lava flows, we can tell which areas are going to be reached by the lava, and hopefully also improve the design of tactical and strategic actions that can be taken to minimize the damage.

    (Of course, whether or not those actions will then be taken is an entirely different matter, but that's mostly politics, not science.)

    1/

    #MtEtna #modelling #simulation #CFD #NaturalHazard #hazardAssessment #riskAssessment #riskMitigation

  7. I'm going to take advantage of the current #eruption on Mt #Etna to discuss some of the challenges of #modelling #lava flows. Buckle up (or just silence me) because this is going to be a long thread.

    First of all, why do we want to model lava flows? The answer most definitely isn't «because we can», since —as I'm going to explain momentarily— we actually cannot. Still having an idea about how lava flows and sets in place is a powerful tool for the assessment (and possibly mitigation) of the associated #hazard and #risk: if we can tell how lava flows, we can tell which areas are going to be reached by the lava, and hopefully also improve the design of tactical and strategic actions that can be taken to minimize the damage.

    (Of course, whether or not those actions will then be taken is an entirely different matter, but that's mostly politics, not science.)

    1/

    #MtEtna #modelling #simulation #CFD #NaturalHazard #hazardAssessment #riskAssessment #riskMitigation

  8. Ah già, #Ferragosto, il giorno in cui l'#Etna stende un velo di #cenere su tutti i progetti di #picnic della zona.

  9. Speciale #vulcani 2023
    L’#Italia è #terra di vulcani, tra i più conosciuti e attivi al mondo. Tra questi vi sono l’#Etna, in #Sicilia, le cui frequenti e spettacolari eruzioni contribuiscono a creare un paesaggio unico, e il #Vesuvio, noto soprattutto per la devastante eruzione del 79 d.C. che seppellì le città romane di #Pompei ed #Ercolano. #volcano #volcan
    ingvvulcani.com/2024/02/19/spe?

  10. Lava fountains are spectacular, but most of the lava falls back into the crater or spatters just a bit around it. During the activity you still get some overflows, that typically cover one or two kilometers.

    #Etna #SEC #lavaFountain #satelliteImage #MtEtna #Sentinel2