Actividade Vulcânica 2017

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

  1. luismeteo3

    luismeteo3
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    Bogoslof volcano (Aleutian Islands): new explosion, ash plume to 33,000 ft
    Wednesday Jan 04, 2017 07:43 AM | BY: T

    [​IMG]
    Current signal from OKRE seismic station on the northern flank of Okmok volcano 45 km (28 miles) to the S
    Another major explosion has just occurred at the volcano producing an ash plume that reached flight level 330 (33,000 ft / 11 km altitude).
    The Alaska Volcano Observatory reported a strong volcanic seismic signal from volcano starting at 21:18 AKST today (6:18 UTC Jan 4) and lasting ~5 minutes. In addition, a series of lightning strikes (typical for large ash plumes) were identified by the World Wide Lightning Location Network.
    AVO raised the Aviation Color Code for Bogoslof to RED and Volcano Alert Level to Warning. However, the eruption was only short-lived (few minutes) and there were been no immediate "follow-up" eruptions detected. The volcano's warning level was soon after decreased again.
    https://www.volcanodiscovery.com/bo...ands-new-explosion-ash-plume-to-33000-ft.html
     
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  2. luismeteo3

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    Teide volcano (Tenerife Island, Canaries): magnitude 3 earthquake under the volcano
    Friday Jan 06, 2017 17:41 PM | BY: T

    [​IMG]
    Location of today's earthquake under Teide volcano
    A shallow magnitude 3 earthquake occurred almost directly under the summit of Teide volcano in 3 km depth today (at 12:18 UTC).
    Whether the quake is volcanic in origin and might be a sign of a gradual reawakening of the volcano is impossible to say, but it is important to follow the volcano's seismic activity closely.
    https://www.volcanodiscovery.com/te...magnitude-3-earthquake-under-the-volcano.html
     
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  3. lserpa

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    Na minha modesta opinião, poderia estar relacionado com o que ocorre por vezes aqui na montanha do Pico e na Caldeira do Faial, gerando sismos isolados de baixíssima magnitude. "PDI" a "porcaria" da idade. São montes que naturalmente estão a envelhecer e a abater. Mas Magnitude 3 se calhar a teoria não bateria certo
    Cabo Verde já foi, quem virá a seguir? Açores ou Canárias?


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  4. luismeteo3

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  5. luismeteo3

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    Bogoslof (United States, Aleutian Islands): (21 Jan) Yet another powerful explosion occurred at the volcano today at 13:17 AKST local time (22:17 GMT). It produced a plume that rose to 36,000 ft (12 km) altitude and drifted to the southeast over the southwest end of Unalaska Island.
    The eruption, among the strongest so far, followed an 30 minute period of increasing seismic activity. During the eruption, the Alaska Volcano Observatory (AVO) reported very hot material (likely lava) at the vent seen on satellite data, a single lightning strike and infrasound signals detected by sensors in Dillingham.
    The Aviation Color Code of Bogoslof volcano remains at RED and the Alert Level remains at WARNING.

    https://www.volcanodiscovery.com/volcanoes/today.html
     
    Wessel1985 gostou disto.
  6. luismeteo3

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  7. luismeteo3

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    Erta Ale (Danakil depression, Ethiopia): The volcanic activity at the shield volcano in the Danakil desert has been at extraordinary and very elevated levels recently. Participant returning from our recent eruption special tour (14-20 Jan) reported that during their stay 16-20 Jan, the lava lake's surface level has been undergoing rapid and large variations, producing massive lava lake overflows when high and intense spattering when low.
    The activity generated a thermal signal that rose to 13 GW, a peak of approx. 100 times the normal average on 19 Dec and has stayed very high since! Following / accompanying this large surge in lava flow activity, several large collapses have been reported from both the also active northern crater and the lava lake itself on and since 20 Jan. It seems that the volcano is currently in a major phase reshaping itself.

    https://www.volcanodiscovery.com/volcanoes/today.html
     
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  8. luismeteo3

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  9. luismeteo3

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  10. luismeteo3

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    Thursday
    26.01.2017 15:16:23 63.641 -19.151 0.0 km 2.9 99.0 4.9 km E of Goðabunga
    Thursday
    26.01.2017 15:15:18 63.633 -19.189 0.0 km 3.0 99.0 3.1 km ESE of Goðabunga
     
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  11. luismeteo3

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    Actividade sísmica intensa no vulcão Etna. Escolas evacuadas por precaução


    Monday, January 30, 2017 - 12:15
    The area of the Etna volcano, near the Italian town of Catania (island of Sicily, south) recorded in the last hours an intense seismic activity, with 50 earthquakes, some of them of magnitude higher than 3 degrees on the Richter scale.
    According to data from the Institute of Geophysics and Volcanology in Italy, 50 tremors have been recorded since 6:50 am Italian time (5:50 GMT), the most intense of magnitude 3.5 at 10:51 am (9:51 GMT) .
    The earthquakes have been warned by the population of the area so they have evacuated by precaution the schools of the localities of Ragalna, Nicolosi and Bronte, near the volcano.
    Much of Sicily is classified as of great seismic danger.
    The island is to the south of the Italian peninsula, in the center of which there have been intense seismic movements since last August that have killed almost three hundred people and destroyed several localities.
    http://sucesosdelmundo.es/internaci...-actividad-sismica-en-la-zona-del-volcan-etna
     
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  12. luismeteo3

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    Sismo de M4.4 e M3.5 no Vulcão Bardarbunga agora a pouco...

    Monday
    30.01.2017 13:55:17 64.678 -17.483 10.3 km 3.5 99.0 4.7 km NNE of Bárðarbunga
    Monday
    30.01.2017 13:50:03 64.658 -17.553 7.2 km 2.6 99.0 2.3 km NNW of Bárðarbunga
    Monday
    30.01.2017 13:47:05 64.674 -17.457 9.4 km 4.4 99.0 5.0 km NE of Bárðarbunga
    http://en.vedur.is/earthquakes-and-volcanism/earthquakes/
     
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  13. luismeteo3

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    Mais outro sismo grande. Sem contar com este já ouve 3 sismos, M4.3. M4.1 e M3.8
    http://hraun.vedur.is/ja/drumplot/drumplot/dyn_highpass_2.0.png
     
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  14. luismeteo3

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    Monday
    30.01.2017 15:19:46 64.678 -17.410 8.2 km 3.4 99.0 7.0 km NE of Bárðarbunga
     
    lserpa e Wessel1985 gostaram disto.
  15. luismeteo3

    luismeteo3
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