Actividade Vulcânica 2017

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

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  1. The Weatherman

    The Weatherman
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    Cumulus

    Registo:
    10 Fev 2009
    Mensagens:
    452
    Local:
    Braga
    Bom dia. Algumas fotografias do interior da cratera vulcânica do Agung mostram que esta encheu cerca de 1/3 relativamente ao inicio da erupção a 25/11.

    [​IMG]
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    [​IMG]
     
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  2. The Weatherman

    The Weatherman
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    Cumulus

    Registo:
    10 Fev 2009
    Mensagens:
    452
    Local:
    Braga
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    Wessel1985, Smota, Tyna e 1 outra pessoa gostaram disto.
  3. luismeteo3

    luismeteo3
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    Furacão

    Registo:
    14 Dez 2015
    Mensagens:
    17,112
    Local:
    Fatima (320m)
    Subsidence of Öræfajökull ice cauldron slowing down
    [​IMG]
    The ice cauldron has deepened some 2-3 metres in the space of two weeks. mbl.is/RAX
    Scientists have studied new photographs of Öræfajökull taken yesterday and their findings show that the subsidence of the new ice cauldron is slowing down which points to good news; that the volcano is not about to blow.

    The cauldron in the Öræfajökull caldera has deepened by around 2-3 metres since the last flight across the glacier some two weeks ago.

    "Everything is somewhat slowing down," said Magnús Tumi Guðmundsson, professor in geology speaking to Mbl.is this morning. He believes either that geothermal heat is getting lower or that there had been ice melt from geothermal heat before the cauldron was spotted and that it has been collecting and depositing water for quite some time. "Whichever it is, it's good news that there is not more going on."

    However, he says that it's impossible to rule out whether a volcanic eruption will occur in the near future and that the interpretation of events at Öræfajökull by scientists still stands. Earthquakes in the area have been less frequent in the last few days but Guðmundsson says that the course of events is still going on.

    Findings show that the power of the geothermal heat in the ice cauldron is between 100 and 150 MW which is similar to cauldrons at Bárðarbunga. Considering how fast the subsidence occurred it is likely that water which had been collecting below it for weeks or even months had seeped forward.

    "Measurements show that the ice cauldron is almost circular with a diameter of 1200 - 1500 metres where it is deepest. Compared to most ice cauldrons this one is fairly wide and shallow for the time being."
    http://icelandmonitor.mbl.is/news/n...nce_of_oraefajokull_ice_cauldron_slowing_dow/
     
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  4. The Weatherman

    The Weatherman
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    Cumulus

    Registo:
    10 Fev 2009
    Mensagens:
    452
    Local:
    Braga
    Bom dia.

    Video sobre a subida de um grupo de vulcanólogos ao M. Agung antes da erupção de Novembro.

     
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    Wessel1985 e luismeteo3 gostaram disto.
  5. The Weatherman

    The Weatherman
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    Cumulus

    Registo:
    10 Fev 2009
    Mensagens:
    452
    Local:
    Braga
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    Wessel1985, Smota, lserpa e 1 outra pessoa gostaram disto.
  6. The Weatherman

    The Weatherman
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    Cumulus

    Registo:
    10 Fev 2009
    Mensagens:
    452
    Local:
    Braga
     
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    Wessel1985 e luismeteo3 gostaram disto.
  7. The Weatherman

    The Weatherman
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    Cumulus

    Registo:
    10 Fev 2009
    Mensagens:
    452
    Local:
    Braga
    O Agung não tem qualquer pluma visível neste momento. Os sismos registados durante a última semana são predominantemente de baixa frequência.

    [​IMG]
     
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    Wessel1985, vitoreis e luismeteo3 gostaram disto.
  8. The Weatherman

    The Weatherman
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    Cumulus

    Registo:
    10 Fev 2009
    Mensagens:
    452
    Local:
    Braga
     
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    lserpa, luismeteo3 e vitoreis gostaram disto.
  9. luismeteo3

    luismeteo3
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    Furacão

    Registo:
    14 Dez 2015
    Mensagens:
    17,112
    Local:
    Fatima (320m)
    A lava lá vai subindo...
     
    Wessel1985 gostou disto.
  10. The Weatherman

    The Weatherman
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    Cumulus

    Registo:
    10 Fev 2009
    Mensagens:
    452
    Local:
    Braga
    Collapse Signature Expandir Assinatura
    Wessel1985, luismeteo3 e lserpa gostaram disto.
  11. The Weatherman

    The Weatherman
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    Cumulus

    Registo:
    10 Fev 2009
    Mensagens:
    452
    Local:
    Braga
    [​IMG]

    Magnitude: 6.5 - 0km ESE of Cipatujah, Indonesia
    UTC Date and Time: Fri Dec 15 2017 16:47:56 GMT+0000 (Hora padrão de GMT)

    Depth: 91 km (~57 mi)

    Affected regions: 0km ESE of Cipatujah, Indonesia

    General Information: Earthquakes of this mangitude can
    be destructive in areas up to about 100 kilometers across
    where people live.
     
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  12. lserpa

    lserpa
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    Cumulonimbus

    Registo:
    29 Dez 2013
    Mensagens:
    3,039
    Local:
    Horta, Matriz, (120 metros)
    Esse sismograma está deveras esquisito! Não percebo onde o sismo começa! Será a azul as ondas P? Não consigo determinar se foi debaixo dos pés, ou a muitos quilómetros!


    Enviado do meu iPhone usando o Tapatalk
     
    Wessel1985 e luismeteo3 gostaram disto.
  13. The Weatherman

    The Weatherman
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    Cumulus

    Registo:
    10 Fev 2009
    Mensagens:
    452
    Local:
    Braga
    É a linha vermelha das 16:30. Esta estação Geofon está a cerca de 300 Km do epicentro. http://geofon.gfz-potsdam.de/waveform/liveseis.php?start=today&station=JAGI
     
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  14. vitoreis

    vitoreis
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    Cumulus

    Registo:
    28 Ago 2012
    Mensagens:
    204
    Local:
    Faro
  15. The Weatherman

    The Weatherman
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    Cumulus

    Registo:
    10 Fev 2009
    Mensagens:
    452
    Local:
    Braga
    Lahar

     
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    Wessel1985 e luismeteo3 gostaram disto.
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