Actividade Vulcânica 2017

Tópico em 'Sismologia e Vulcanismo' iniciado por luismeteo3 4 Jan 2017 às 13:41.

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  1. Tyna

    Tyna
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    Cirrus

    Registo:
    9 Jan 2009
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    99
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    Livramento-Mafra
    Já está em erupção
    Krakatau volcano
    Caldera 813 m (2,667 ft.) / Anak Krakatau: 189 m
    Sunda Strait, Indonesia, -6.1°S / 105.42°E
    Current status: erupting (4 out of 5)
     
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  2. luismeteo3

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    Furacão

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  3. luismeteo3

    luismeteo3
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    India's Barren Island Volcano Erupts For First Time in Years
    By Ada Carr
    Feb 23 2017 09:45 AM EST
    weather.com


    [​IMG]
    The Barren Island volcano erupts on Jan. 23, 2017. (National Institute of Oceanography)



    The Barren Island volcano, the only active volcano in India and in the Andaman and Nicobar Islands has erupted again.

    The peak began erupting again on Jan. 23, spewing lava and smoke, according to a release from the National Institute of Oceanography.

    "It was a small eruption compared to the last major eruptions in 1991 and 1995," NIO chief scientist Dr. Abhay Mudholkar told CNN.

    A team of researchers from the institute was collecting seafloor samples near the peak when it suddenly began to spew ash. It erupted in small bursts, lasting between five to 10 minutes.

    [​IMG]
    India's Barren Island volcano erupts on Jan. 23, 2017. (National Institute of Oceanography)


    Only ash clouds were visible during the day, however, after sundown red lava fountains and flows streaming down the volcano were spotted, the release also said.

    Researchers returned to visit the volcano on Jan. 26 and saw the peak was still having spurts of ash and smoke. In an effort to learn more about the past and present activity, the scientists took samples of the water near the volcano and collected coal-like black pyroclastic material ejected during the explosions.

    [​IMG]
    The Barren Island volcano erupts on May 16, 1991. This eruption was the first from the peak in the 20th century. (Geological Survey of India)


    The Barren Island volcano has an elevation of 1,161 feet and sits on a small, uninhabited mile-wide island, according to the Smithsonian Institution’s Global Volcanism Program. Its eruption in 1991 dramatically modified the structure of the central cinder cone, lowering its height from 1,000 feet to 738 feet.
    https://weather.com/news/news/barren-island-volcano-india-eruption
     
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  4. luismeteo3

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  5. luismeteo3

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  6. luismeteo3

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  7. Snifa

    Snifa
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    Super Célula

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    Porto-Marquês:145 m Mogadouro:749 m
    Sempre espectaculares este vídeos das erupções vulcânicas.

    Cá fica mais um da recente erupção ( e outras mais antigas) do Etna e com o som real:

     
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  8. luismeteo3

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    Active volcanoes in the world: February 22 - 28, 2017

    New activity/unrest was reported for 3 volcanoes between February 22 and 28, 2017. During the same period, ongoing activity was reported for 14 volcanoes.

    New activity/unrest: Etna, Sicily (Italy) | Pacaya, Guatemala | Piton de la Fournaise, Reunion Island (France).

    Ongoing activity: Bagana, Bougainville (Papua New Guinea) | Bogoslof, Fox Islands (USA) | Cleveland, Chuginadak Island (USA) | Colima, Mexico | Dukono, Halmahera (Indonesia) | Ebeko, Paramushir Island (Russia) | Fuego, Guatemala | Kilauea, Hawaiian Islands (USA) | Langila, New Britain (Papua New Guinea) | Nevado del Ruiz, Colombia | Sabancaya, Peru | Sheveluch, Central Kamchatka (Russia) | Sinabung, Indonesia | Suwanosejima. Ryukyu Islands (Japan).

    https://watchers.news/2017/03/02/active-volcanoes-world-february-22-28-2017/
     
  9. luismeteo3

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  10. luismeteo3

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    A BBC team and a number of tourists have suffered minor injuries after being caught up in an incident on the erupting volcano Mount Etna in Sicily.
    "Many injured - some head injuries, burns, cuts and bruises," tweeted BBC science reporter Rebecca Morelle.
    Lava flow mixed with steam had caused a huge explosion, which pelted the group with boiling rocks and steam, she said.
    She said about eight people had been injured, with some evacuated from the mountain by rescue teams.



    http://www.bbc.co.uk/news/world-europe-39293086
     
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  11. luismeteo3

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    Furacão

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    Dez feridos em explosão no vulcão mais activo da Europa
    16 mar, 2017 - 15:46

    Erupção no Monte Etna, na Sicília, surpreendeu uma equipa de filmagens da estação de televisão BBC. "Não é uma experiência que queira voltar a repetir", disse uma jornalista.
    Rebecca Morelle

    ✔@BBCMorelle

    Reminder of how dangerous & unpredictable volcanoes can be - everyone had a very lucky escape. (7)

    1:44 PM - 16 Mar 2017

    “A equipa da BBC estão ok – alguns cortes, nódoas negras e queimaduras. Mas ficámos muito abalados. Foi extremamente assustador”, conta a especialista em temas científicos.

    "Foi uma lembrança de como perigosos e imprevisíveis os vulcões podem ser. Tivemos muita sorte em escapar", acrescentou Rebecca Morelle.

    Algumas pessoas foram assistidas no local e seis feridos tiveram que ser levados para o hospital, mas nenhum está em estado grave.

    O Etna é o vulcão mais activo da Europa. Depois de vários anos de acalmia, o Etna voltou à acção em Fevereiro com erupções consecutivas que lançaram colunas de fumo.

    A explosão desta quinta-feira foi o resultado daquilo que os especialistas chamam uma erupção o freatomagmática, que resulta da interacção do magma com a água, neste caso com a neve.
    http://rr.sapo.pt/noticia/78562/?utm_source=rss
     
  12. Orion

    Orion
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    Furacão

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  13. MSantos

    MSantos
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    Staff

    Registo:
    3 Out 2007
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    Azambuja / Mte. Barca (Coruche)
    Muito tenso!! :unsure::sweat:

    Já não é a Primeira vez que acontece uma situação destas, há algum tempo foi no Japão, mas aí acho que chegou a haver vitimas mortais.
     
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  14. luismeteo3

    luismeteo3
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    Furacão

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    14 Dez 2015
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  15. luismeteo3

    luismeteo3
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    Furacão

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    Ármann said eruptions could be in store: 500 earthquakes in the swarm
    Editorial DV ritstjorn@dv.is
    13:52> March 21, 2017

    About 500 earthquakes have been Herðabreiðartöglum near caldera. Ruptcies could be available for the eruption which could even take place in the coming weeks. Another possibility is that earthquakes are to release the pressure after the eruption of the volcano. This was stated in a conversation with Gissur Ármann Höskuldsson eldfjallafræðing in hádegisfréttum Channel 2.

    The largest earthquake in the swarm was almost three points but significantly reduced the cycle yesterday and last night. Asked what could be read from these earthquakes Ármann says that two possibilities are in the situation. One possibility is that after the big eruption in the volcano area that is adapting and slowly releases a voltage. "Then it ends with earthquakes and maybe open some cracks," says Ármann and there is nothing to worry about. But there is another possibility and it could mean that an eruption is coming.

    "On the one hand there is this dynamic that penetrated Álftadalsdyngju the river near many years ago and has been expanding west along," says Ármann and adds that this behavior is somewhat strange.

    "When last heard her, it was in this area where these earthquakes is now. It could then mean that someone present in the ash system we had a volcanic eruption in the next few weeks or months or years. "

    Ármann says that magma is moving closer to the surface and it could be shorter in the eruption area. Ármann concludes:

    "Not necessarily close to Herðubreið but in a box system itself because it is moving into the caldera system when it goes like this the west."
    http://www.dv.is/frettir/2017/3/21/...eti-verid-i-vaendum-500-skjalftar-i-hrinunni/
     
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