Vulcanismo - 2008

Tópico em 'Sismologia e Vulcanismo' iniciado por Luis França 2 Jan 2008 às 14:07.

  1. Luis França

    Luis França
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    [ame="http://www.liveleak.com/view?i=a5e_1199241979"]VIDEO[/ame]

    A volcano has erupted in southern Chile, leading to some 150 people being evacuated from the immediate area.
    The Llaima volcano, about 650 km (400 miles) south of the capital, Santiago, produced a huge column of smoke, and threw out lava and ash.
    Officials say further evacuations from local villages may be necessary.

    bbc
     
  2. Vince

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    Espectacular erupção do Llaima, um dos maiores e mais activos do Chile.

    Os momentos iniciais da erupção foram registados por um videoamador:



    E o mesmo video que o Luis pôs, mas "embedded":




    Alguma informação na Wikipedia acerca deste Vulcão:


    A localização:

    [map]38.691667S,71.733333W[/map]
    http://maps.google.com/maps?f=q&hl=...,-71.754456&spn=0.238421,0.6427&t=h&z=11&om=1
     
    #2 Vince, 2 Jan 2008 às 16:30
    Editado por um moderador: 21 Set 2014 às 03:52
  3. Mário Barros

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    Vulcão em erupção no Chile

    Dezenas de turistas retirados da zona por precaução
    Equipas de salvamento retiraram esta quarta-feira 54 turistas e pessoal de um parque natural no Chile devido à erupção do vulcão Llaima, o maior e um dos mais activos do país.

    Não há notícias de feridos ou danos, mas a zona foi evacuada de dezenas de turistas, como medida de protecção. O vulcão Llaima tem 3.125 metros de altitude.

    As autoridades dizem que novas erupções são possíveis. Foram detectadas actividades sísmicas num outro vulcão das proximidades, o Puyehue, situado a sul do Llaima.

    http://sic.sapo.pt/online/noticias/mundo/Vulcao+em+erupcao+no+Chile20080102.htm

    Parece que alguém anda a ligar os sistemas de arrefecimento...:lmao:
     
  4. FMartins

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    O Blog Geopedrados, por causa da informação relevante e para divulgar este espaço, publicou um post citando este Fórum (e mais exactamente a secção Astronomia e Ciências da Terra e da Vida) com informação sobre esta erupção.

    Os meus parabéns ao pessoal que está a fazer um tão bom trabalho neste espaço...!
     
  5. Vince

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    Obrigado pelas palavras que dirige a todos os que contribuem neste espaço, e retribuo, pois não conhecia o Geopedrados que parece um blogue colectivo muito interessante. A visitar com regularidade a partir de agora.
     
  6. Luis França

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    Hawaii eruption hits 25th year

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    Fountains up to 200 feet shot up from a crack on the East Rift Zone of Kilauea Volcano on Jan. 13, 1983, about 10 days after the eruption started.

    Today marks the 25th anniversary of the ongoing eruption of Kilauea volcano that so far has destroyed 190 structures in Puna, including Kalapana Village, buried almost nine miles of highway and shown no sign of slowing or stopping.

    Scientists with the U.S. Geological Survey's Hawaiian Volcano Observatory say the eruption is the longest in Kilauea's rift zone in at least the past 800 years, and may be the largest Kilauea eruption in the past 1,000 years.



    Indonesia mud volcano breaches barrier, sparks panic

    Residents in Porong in East Java province fled from their homes in panic late on Thursday when hot, foul-smelling mud began to flow into the area, covering the nearby railway tracks and a main road.
    "At least 10 vehicles were buried by one-metre-deep mud, including mine," said Andi Yudianto, a local traffic police chief.
    The newly affected area is about 20 kilometres from Surabaya, Indonesia's second-largest city. But thousands of homes and factories have been submerged by the hot mud since it first started to erupt in May 2006.
    The disaster occurred about 200 metres from a gas exploration well operated by PT Lapindo Brantas, just two days after an earthquake hit the city of Yogyakarta in Central Java.
    There has been a dispute over whether the mud volcano was caused by the gas drilling well or by the earthquake.
    Lapindo is partly owned, through various other companies, by the family of Aburizal Bakrie, a Cabinet Minister and businessman. The Bakrie family last year topped the Forbes' list for the wealthy in Indonesia.
    The Government has tried several schemes to halt the flow, including dropping giant concrete balls into the crater, but the hot mud continues to spurt out.
     
  7. Luis França

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    Ancient volcanic ash from Mount Vesuvius discovered in Greece

    Athens - A thick layer of ancient solidified volcanic ash, caused by the eruption of Italy's Mount Vesuvius some 18,000 years ago, has been discovered in northern Greece, newspaper reports said Tuesday. Scientists from Thessaloniki's Artistole University conducting research in the region of Lake Volvi, in northern Greece, said deposits landed in the area after the volcano erupted, spraying hot ash across Italy and into Albania and Greece, according to a report in the Greek daily Kathimerini.
     
  8. Luis França

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    Mount St. Helens growls mysteriously

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    As John Pallister circled above Mount St. Helens on Sunday afternoon, a sharply defined line of steam caught his attention.
    "It was interesting enough to take some pictures," said Pallister, a U.S. Geological Survey scientist and private pilot.
    He didn't know it, but his USGS colleagues back in Vancouver had already noticed a 2.9-magnitude earthquake followed by a small but unusually long tremor at the steadily erupting volcano. The tremor, in fact, continued for almost an hour and a half, punctuated by a 2.7-magnitude quake.
    Such tremors typically signal that magma or gases are flowing underground like water in a pipe. The last tremor of note - a 55-minute stemwinder big enough to register on seismometers from Bend, Ore., to Bellingham on Oct. 2, 2004 - prompted the Forest Service to hastily evacuate the Johnston Ridge Observatory five miles north of the crater's mouth.
    Sunday's tremor wasn't nearly as powerful.
    Cynthia Gardner, scientist in charge of the USGS Cascades Volcano Observatory in Vancouver, said scientists have nonetheless decided to put off any scientific excursions to the crater itself.
    "We're going to back off of that for the next couple of days," she said Tuesday.
    Sunday's tremor was accompanied by a period of minor ground inflation and deflation near the ever-expanding lava dome. Remote tiltmeters, capable of measuring millimeters or less, registered tiny but significant movements - potentially indicating the volcano was pressurizing for an explosion.
    Two days of relatively placid seismic activity have scientists less concerned about an explosive steam and ash blast, the last of which occurred on March 8, 2005.
    In his overflight, Pallister noticed steam fuming along a fracture line that runs like a zipper atop the actively erupting portion of the volcano's lava dome. Because the volcano is already freely erupting lava to the surface, there isn't as much risk of the volcano's pressurizing as when it was bottled up in the fall of 2004.
     
  9. mvbueno

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    Fonte: UOL
     
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  10. Luis França

    Luis França
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    Ecuador volcano continues weeks-long eruption

    Volcano Tungurahua in central Ecuador has remained highly active in more than three weeks after it first began showering the nearby region with ash, the National Polytechnic's Geophysics Institute said in a statement Monday.
    The 5,029-km mountain emitted a new burst of gas and columns of smoke earlier Monday, extending its increased activity starting on Jan. 5.

    "The volcano's activity has not really seen major changes. It continues to be high, characterized by constant gas and ash emission, and the number of the explosions persists," said Santiago Arellano, from the Guadalupe monitoring station.
     
  11. Luis França

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    Tungurahua continua em erupção, sem sinais de abrandar:

    Thousands flee Ecuador volcano

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    Chile Volcano Spits Out Lava, Experts Warn of More

    Chile's Llaima, one of South America's most active volcanoes, belched ash and a nearly mile-long river of lava crept down its slopes on Wednesday as geologists warned activity could intensify. Columns of ash and smoke rose from the crater, some of them as high as 16,400 feet (5,000 metres) above the volcano that is located 435 miles (700 km) south of the capital Santiago.



    Sem esquecer o eclipse anular do Sol, hoje, só visível na Antártida e sul da Austrália.

    E, já sabem, dia 23 de Fevereiro temos outro eclipse total da Lua, visível em Portugal.
     
  12. iceworld

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    Com a sorte com que andamos ainda vamos ter chuva nesse dia :huh:

    5000metros é :surprise:
     
  13. nimboestrato

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    Duas fotos curiosas do Monte Sta Helena.
    Antes e depois da grande erupção...
     

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