A erupção do vulcão Eyjafjallajökull na Islândia



Vince

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Hoje tem estado adormecido, a actividade eruptiva cessou, pelo menos temporariamente.

Overall assessment:
The eruption seems to be dormant today. There is still a considerable
amount of steam coming from the crater, but no ash can be seen in it.
The tremor is still higher than before the onset of the eruption,
especially in the frequency band 1 – 2 Hz, but that might be due to the
rising steam.
http://en.vedur.is/media/jar/Eyjafjallajokull_status_2010-05-23_IES_IMO.pdf
 

AnDré

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Odivelas (140m) / Várzea da Serra (900m)
Hoje, com o céu pouco nublado na região, é possível ver através das webcams que a nuvens de fumo permanece apenas por cima do vulcão.

ejia.jpg




Espaço aéreo praticamente limpo:

semttulo4fx.png
 

Vince

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Será que é desta que o vulcão volta a adormecer?

Ninguém sabe responder a essa pergunta, é muito cedo para dizer que acabou. Os vulcões podem estar dias ou meses calmos e depois voltarem de novo a entrar em erupção.
Ainda liberta bastante vapor, a actividade sísmica decresceu.

Assessment 24 May 2010 15:00

There is still a considerable amount of steam coming from the crater, but no ash can be seen in it. According to a web camera, the steam plume reaches 2 km/6600ft (a.s.l.). Due to light northerly wind, it is heading south.

Conditions at the eruption site are similar to yesterday, estimated through a webcamera. Earthquake activity has decreased since yesterday; only one earthquake has been recorded since midnight. The eruption seems to be dormant.

However, tremor is still higher than before the onset of the eruption, especially in the frequency band 1-2 Hz.
http://en.vedur.is/media/jar/Eyjafjallajokull_status_2010-05-24_IES_IMO.pdf
 

AnDré

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Enquanto ele permanece agora calmo, porque não rever e contemplar alguma da sua beleza?
Time-lapses feitos entre 1 e 2 de Maio.
Dá mesmo vontade de ir até lá. :)

[ame="http://vimeo.com/11673745"]Iceland, Eyjafjallajökull - May 1st and 2nd, 2010 on Vimeo[/ame]
 

joseoliveira

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Muito interessante a forma como a nuvem de cinzas se funde na nebulosidade! :thumbsup:
Já a cascata parecia ser de açucar...:D

Achei curioso ter mostrado a carcaça do avião; possivelmente para mostrar o efeito que os componentes químicos lançados do vulcão para a atmosfera provocariam na fuselagem durante o voo, será?! :unsure:
 

Vince

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Última actualização, sem novidades


Noises: No reports.
Meltwater: Low discharge from Gígjökull.

Conditions at eruption site: Similar as yesterday, estimated through a webcamera. But
in the afternoon the visibility has been very poor caused by ash that has
been blown up around the volcano. Because of this, the visibility in
Vestmannaeyjar was 1 km and 2 km in Vatnsskarðshólar and the
volcano could not be seen on the webcameras in the afternoon.

Seismic tremor: Volcanic tremor is still more than before the eruption and has been
rather steady the last couple of days, but small pulses, mostly on the
lowest frequency (0.5-1.0 Hz), are being detected on the earthquake
stations around the volcano.

Earthquakes: Four earthquakes have been detected under the volcano today, but 16
earthquakes were detected there yesterday.

GPS deformation: No significant deformation at sites around Eyjafjallajökull in the last
couple of days.

Overall assessment: There is still a considerable amount of steam coming from the
crater. The tremor is still higher than before the onset of the eruption,
and small tremor pulses have been detected on the lowest frequency.


gg25mai10.jpg

(Foto 25 Maio)