Atividade Vulcânica 2019

Tópico em 'Sismologia e Vulcanismo' iniciado por guisilva5000 1 Jan 2019 às 17:14.

  1. luismeteo3

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    #19 luismeteo3, 25 Jan 2019 às 18:44
    Última edição: 25 Jan 2019 às 19:03
  5. luismeteo3

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    O lago Crater no Whakaari (White Island) # vulcão se afogou várias aberturas fumarolas como o nível do lago subiu cerca de 12 m. Aqui estão algumas imagens de drones de nossos # técnicos de vulcões mostrando a maior dessas fumarolas afogadas, agora uma área forte de afloramento no lago
     
  11. luismeteo3

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  12. luismeteo3

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    Nível de incerteza decretado na povoação de Kóparker, depois de essa área do norte da Islândia ser atingida por larga centena de sismos de origem tectónica.

    Update on the earthquake swarm on Tjörnes Fracture Zone (west of Kópasker village)
    Posted on March 28, 2019 by Jón Frímann
    Uncertainty level has been declared in the area close to Kópasker village due to this earthquake swarm. This is the lowest alert level in Iceland.

    Since this earthquake swarm started on Saturday around 1800 earthquake have taken place according to Icelandic Met Office. Largest earthquakes in the last 24 hours have magnitude 3,8 and 3,0. This might change in next few hours since this earthquake swarm is ongoing.

    [​IMG]
    The earthquake swarm (green stars) west of Kópasker. Copyright of this image belongs to Icelandic Met Office.

    This earthquake swarm has increased the risk of a magnitude 6,0 or larger earthquake in the Tjörnes Fracture Zone. This earthquake swarm is large for this part of the Tjörnes Fracture Zone.
    https://www.jonfr.com/volcano/?p=7886

    https://www.almannavarnir.is/englis...phase-due-to-earthquake-swarm-in-oxarfjordur/
     
    #27 luismeteo3, 28 Mar 2019 às 20:16
    Última edição: 28 Mar 2019 às 20:45
  13. luismeteo3

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    Discovering new thermal areas in Yellowstone's dynamic landscape!
    April 01, 2019
    Landsat-8 nighttime thermal infrared image from April 2017 showing the Tern Lake area. In Yellowstone, temperatures are extremely cold at night in the winter, and most lakes are frozen (dark pixels). West Tern Lake seems to be thawing here - perhaps it receives some thermal waters from nearby hot springs. The patch of bright (warm) pixels between West Tern Lake and the Tern Lake thermal area has emerged over the last 20 years. Lakes are outlined in blue; the boundary of the Sour Creek resurgent dome is in black; known thermal areas are outlined in red; and the red triangles are individual thermal features that have been mapped.


    Yellowstone's thermal areas are the surface expression of the deeper magmatic system, and they are always changing. They heat up, they cool down, and they can move around. A recent spectacular example was the September 2018 emergence of a new thermal feature and eruption of the long-dormant Ear Spring in the Upper Geyser Basin, near Old Faithful. Even more impressive was the expansion of heated ground in the Back Basin of the Norris Geyser Basin in 2003. These sorts of changes are part of the normal life cycles of thermal areas in Yellowstone National Park.

    Recently, we have discovered another phenomenal example of thermal change – the emergence of an entirely new thermal area, which has taken place over the past 20 years!

    [​IMG]
    Landsat-8 nighttime thermal infrared image from April 2017 showing the Tern Lake area. In Yellowstone, temperatures are extremely cold at night in the winter, and most lakes are frozen (dark pixels). West Tern Lake seems to be thawing here - perhaps it receives some thermal waters from nearby hot springs. The patch of bright (warm) pixels between West Tern Lake and the Tern Lake thermal area has emerged over the last 20 years. Lakes are outlined in blue; the boundary of the Sour Creek resurgent dome is in black; known thermal areas are outlined in red; and the red triangles are individual thermal features that have been mapped.
    https://volcanoes.usgs.gov/observatories/yvo/

    Descoberta de novas zonas termais no vulcão Yellowstone
     
  14. tomalino

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    luismeteo3, MSantos e vamm gostaram disto.
  15. lserpa

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    Mais uma do Stromboli! E está é de hoje! 28/08/19!



    Enviado do meu iPhone usando o Tapatalk
     

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