Actividade Vulcânica 2017

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

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  1. luismeteo3

    luismeteo3
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    Meeting of the Scientific Advisory Council on Civil Protection 7.12.2017
    December 7, 2017, 17:31
    Today a meeting was held in the Scientific Council on Civil Protection of Öræfajökull. The results of the meeting are as follows:

    During the past week, small earthquakes that have occurred in Öræfajökull have increased. Last week there were 160 mini-jokes. So many earthquakes have not been detected there before.
    The earthquakes are predominantly dispersed in and around the top 10 km of the Earth’s crust.
    The latest measurements of the seabed in the Öræfajökull caldera show that it continues to deepen and expand in accordance with sustained increased geothermal activity and that water drains from the boiler.
    Measurements in Skaftafellsá, Virkisá, Kotá and Kvíá show insignificant changes in recent weeks. Measurement of conductivity and chemical composition shows that geothermal water is present in Kvíá.
    Further interpretation of the measurements of last year’s crust changes shows small amounts on the southern jetty of the glacier.
    Scenarios and measurements in the area indicate a small particle penetration of about 2-6 km depth below the mountain.
    Over the last few weeks, monitoring at Öræfajökull has been greatly increased, watermarks, earthquake meters, and GPS GPS devices as well as some webcams have been added. Research on the ground has been increased.
    Last updated: December 7, 2017 at 17:31
     
    Wessel1985 gostou disto.
  2. luismeteo3

    luismeteo3
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    Dyke intrusion in Öræfajökull volcano confirmed
    Posted on December 8, 2017 by Jón Frímann

    Recent measurement of Öræfajökull volcano have confirmed a dyke intrusion, the dyke intrusion is located in south part of Öræfajökull volcano and that area is showing inflation. At the moment the amount of magma is now estimated at being close to the total of what erupted in 2010 eruption of Eyjafjallajökull volcano. At the moment the dyke is at depth of 2 – 6 km and that explains current hydrothermal activity in Öræfajökull volcano and why it is increasing. How long this is going to go on is not known at the moment. Öræfajökull volcano is a stratovolcano with everything that comes with it (information about this type of voclano can be found here and here).

    Last week total of 160 earthquakes where recorded in Öræfajökull volcano and that is a first time record for Öræfajökull volcano having this many earthquakes since recording of earthquakes started in Öræfajökull volcano (~1995?). Earthquake activity seems to be stable at the moment, when that changes is impossible to know at the moment.
    http://www.jonfr.com/volcano/?p=7227
     
    Wessel1985 e lserpa gostaram disto.
  3. luismeteo3

    luismeteo3
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  4. luismeteo3

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  5. luismeteo3

    luismeteo3
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    Um vulcão na Islândia com 9000 anos resolveu acordar hoje...

    Saturday
    09.12.2017 19:20:44 64.412 -20.719 5.0 km 3.5 99.0 1.6 km ENE of Skjaldbreið
    http://en.vedur.is/earthquakes-and-volcanism/earthquakes/langjokull/


    Skjaldbreiður, meaning the broad shield in Icelandic, is an Icelandic lava shield formed in one huge and protracted eruption roughly 9,000 years ago[citation needed]. The extensive lava fields which were produced by this eruption, flowed southwards, and formed the basin of Þingvallavatn, Iceland's largest lake, and Þingvellir, the "Parliament Plains" where the Icelandic national assembly, the Alþing was founded in 930.

    The volcano summit is at 1,060 metres, and its crater measures roughly 300 metres in diameter.

    Straddling the Mid-Atlantic ridge, the lava fields from Skjaldbreiður have been torn and twisted over the millennia, forming a multitude of fissures and rifts inside the Þingvellir National Park, the best known of which are Silfra, Almannagjá, Hrafnagjá and Flosagjá.
    https://en.wikipedia.org/wiki/Skjaldbreiður
     
    Wessel1985, Tyna, WHORTAS e 1 outra pessoa gostaram disto.
  6. luismeteo3

    luismeteo3
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    Só um aspecto interessante, este vulcão escudo esteve em erupção contínua dezenas de anos, talvez mesmo um século! A Islândia sempre a surpreender! :D
     
    Wessel1985, Tyna, Aspvl e 2 outras pessoas gostaram disto.
  7. luismeteo3

    luismeteo3
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    Earthquake of size 3.5 in Skjaldbreid
    Birgir Olgeirsson writes December 9, 2017, 20:03

    Earthquake of size 3.5 in Skjaldbreid was at 19:20 tonight, according to a report from the Icelandic Meteorological Office. Notifications that the earthquake has been found has been received from Biskupstungur and Kjalarnes. A few smaller earthquakes have followed.

    According to the Earthquake Table of the Icelandic Meteorological Office, 19 earthquakes have crossed Skjaldbreid today. All of them were around 1 in size, apart from the big one who rode over tonight.

    According to information from the Icelandic Meteorological Office, earthquakes have been in the area of Skjaldbreid last days. The tremors in Skjaldbread occasionally measure themselves and the location is not unusual. The magnitude of the earthquake that occurred during the eighth time tonight at Skjaldbreid is unusual. This is the largest earthquake in the area since 1992.

    http://www.visir.is/g/2017171208760/jardskjalfti-af-staerd-3-5-i-skjaldbreid
     
    Wessel1985, Tyna e WHORTAS gostaram disto.
  8. luismeteo3

    luismeteo3
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    E já vão 3 sismos acima de M3 e no total 46 sismos...

    Saturday
    09.12.2017 21:25:42 64.410 -20.725 5.6 km 3.8 99.0 1.3 km ENE of Skjaldbreið

    Saturday
    09.12.2017 19:53:18 64.411 -20.720 5.7 km 3.1 99.0 1.5 km ENE of Skjaldbreið

    Saturday
    09.12.2017 19:20:44 64.412 -20.719 5.0 km 3.5 99.0 1.6 km ENE of Skjaldbreið
     
    Wessel1985, Tyna, WHORTAS e 1 outra pessoa gostaram disto.
  9. camrov8

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    Cumulonimbus

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    o moço vai com calma tu neste tópico fazes a festa lanças os foguetes e apanhas as canas tem calma tornas o tópico pesado
     
  10. luismeteo3

    luismeteo3
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    Desculpa??? Então porque não vejo nada aqui teu?
     
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  11. lserpa

    lserpa
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    Cumulonimbus

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    Acho muito útil os post do @luismeteo
    É um assunto interessante e por pena minha não tenho muito tempo disponível para ver as últimas e com os posts dele vou me inteirando do que se passa. Estes da Islândia que agora estão a dar sinais de atividade, poderão ser um problema para a Europa.


    Enviado do meu iPhone usando o Tapatalk
     
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  12. FJC

    FJC
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    Cumulus

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    Errado! Pesadas são mensagens sem nexo! A reclamar de chover a menos/mais!

    continua! acompanhamento 5 estrelas! continua!
     
  13. criz0r

    criz0r
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    @luismeteo3 a Islândia está em altas. Admira-me o Katla andar tão sossegadinho com tanta actividade envolvente mas é melhor que continue assim.
     
    Collapse Signature Expandir Assinatura
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  14. luismeteo3

    luismeteo3
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    Sunday
    10.12.2017 08:48:34 64.411 -20.719 5.5 km 3.8 99.0 1.6 km ENE of Skjaldbreið

    Esta crise sísmica já conta com 83 sismos desde ontem à noite...

    IMO: “Around 100 earthquakes have been detected in Mt. Skjaldbreidur since last evening, December 9th. At 19:20 last evenning, there was an earthquake of magnitude M3.5. At 19:53 an earthquake of magnitude M3.2 occurred and at 21:25 an earthquake of magnitude M3.7 occurred. The larger earthquakes were felt inland in the south and west part. Today Dec. 10th at 08:48 an earthquake of magnitude M3.8 occured.
    Written by a specialist at 10 Dec 09:17 GMT”
     
    #584 luismeteo3, 10 Dez 2017 às 09:26
    Última edição: 10 Dez 2017 às 09:36
    Wessel1985, Tyna e WHORTAS gostaram disto.
  15. luismeteo3

    luismeteo3
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    Muito obrigado! Mas uma coisa eu concordo, quem devia estar aqui a falar dos vulcões islandeses era o Irpsit. Ele é que é o especialista! :D
     
    Wessel1985 gostou disto.
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