iceland Bárðarbunga and Askja - Volcanic Activity

[Rustynailer]

http://www.epa.ie/air/quality/data/rm/gas/#.VAtyOfldXeJ This looks serious. That is all I am busy.

 

http://ruv.is/frett/rannsaka-blaa-modu-a-austurlandi

 

 

Edited September 6, 2014 by Rustynailer

[karyo]

Another earthquake got upgraded! A 4.1 over Bardarbunga again.

 

http://en.vedur.is/earthquakes-and-volcanism/earthquakes/

 

Karyo

[Rustynailer]

Another earthquake got upgraded! A 4.1 over Bardarbunga again.

 

http://en.vedur.is/earthquakes-and-volcanism/earthquakes/

 

Karyo

 The upgrades come after further human calculations. The fissure is capable of shifting some Ice down hill fast I fear.  

Explosive activity is almost inevitable, it would be daft to be anywhere near the place now I think.

I hope people stay well away, it is like a bad gas leak...    

 

 

Look where the action is.  

 

Edited September 6, 2014 by Rustynailer

[tinybill]

The lava field is certainly more incandescent this evening (compare to rusty's screen grab in post 728).  I guess as it's area increases and it has had time to transmit heat into it's surroundings then the central parts of the field are able to retain more heat and not crust over so readily.  If the flow from the fissure were to suddenly stop, how long would the field be able to keep on flowing downhill before it comes to a halt? Hours? Days? Weeks even?

reading on the  cam site that  the lave  moving at  40 - 50  meters  per hour should hit water  in about 10-12  hours

[Buckster]

anyone seen this ?

 

wow the power

 

https://www.youtube.com/watch?v=BUREX8aFbMs#t=30

[Skullzrulerz]

Looks like something big is bound to happen?

[NorthNorfolkWeather]

I've been thinking about the late night earthquakes. They cannot be strictly tidal as they would get later (as an average, they would creep) into the night that hasn't happened on my reading of the situation.

That being said, the quakes around the caldera have been strong and consistent, Bara may yet go bang

Edited September 6, 2014 by NorthNorfolkWeather

[Buriedundersnow]

saw this and thought it looked quite cool

 

[Buckster]

the fissures are looking mighty fine this morning

[karyo]

Another big one this morning! M4.5 in BArdarbunga.

Karyo

[Buckster]

look at the height of the fissure in the centre of the camera now

 

looks even higher than it did 30 minutes ago - very impressive

[KyleHenry]

look at the height of the fissure in the centre of the camera now

 

looks even higher than it did 30 minutes ago - very impressive

I was thinking the same thing from last night also hard to judge height from live cam but at least 100 metres and higher at times

[tinybill]

 

 

look at the river steam coming out of it

[Buckster]

just been a 5.4 !

 

http://www.emsc-csem.org/Earthquake/earthquake.php?id=398836

 

is something about to happen

Edited September 7, 2014 by Buckster

[karyo]

just been a 5.4 !

 

http://www.emsc-csem.org/Earthquake/earthquake.php?id=398836

 

is something about to happen

Wow! At first I thought it was an upgrade for the earlier quake but this is a new one! We must be getting closer to the collapse!

Karyo

[tinybill]

look how close the laver is to the river  now

[NorthNorfolkWeather]

just been a 5.4 !

 

http://www.emsc-csem.org/Earthquake/earthquake.php?id=398836

 

is something about to happen

They have confirmed that really quickly,

Sunday

07.09.2014 07:07:56 64.613 -17.476 3.9 km 5.4 99.0

3.9 km SE of Bárðarbunga

again on the Easterly side

[Buckster]

says 5.5 now ?

 

http://www.emsc-csem.org/Earthquake/earthquake.php?id=398836

[john pike]

Updated information

7th September 2014 08:00 - from geoscientist on duty

Earthquake activity continues in Bárðarbunga, in the northern part of the dike intrusion and in Herðubreiðartögl. Total of 70 earthquakes have been detected since midnight, the largest M5,7 at 07:08 in the Bárðarbunga caldera. The lava has reached the western channel of Jökulsá á Fjöllum. Steaming occurs.

http://en.vedur.is/earthquakes-and-volcanism/articles/nr/2947

http://www.emsc-csem.org/Earthquake/seismologist.php

Raw data above

That would have been quite a long shaker looking at that

Edited September 7, 2014 by john pike

[Rustynailer]

According to this file there was an explosion last night at the caldera ...

 

When these things start showing I think it is only a matter of time... I still speculate on a North Eastern flank collapse, sweeping the glacier down that flank with it. Not nice. 

 

Overview, weather or not this mornings was a 5.7 or a 5.4 remains to be seen...

 

 

It is misty/foggy so we can not see very far on the Mila cams, sods law says it will do its thing at a time like this...

Edited September 7, 2014 by Rustynailer

[summer fun]

Just found this on twitter, it is a map showing the subsidence of the caldera.

 

Darker the red deeper the subsidence.

 

Edited September 7, 2014 by summer fun

[KyleHenry]

Question for Rustynailer with the 15 metre subsidence in the Caldera can you estimate the volume of magma on the move towards fissure. Looking for your best guess and comparisons to size and scale to similar events for this Bardarbunga epic saga?

[john pike]

http://www.ruv.is/frett/15-meter-subsidence-in-bardarbunga-caldera

About 250 million cubic meters of magma have flowed out of the chamber, belived to be under the Bardarbunga caldera, leading to a 15 meter subsidence of the caldera itself. These changes are clearly observed on the surface of the glacier covering the volcano, say scientists.

Edited September 7, 2014 by john pike

[NorthNorfolkWeather]

http://www.ruv.is/frett/15-meter-subsidence-in-bardarbunga-caldera

About 250 million cubic meters of magma have flowed out of the chamber, belived to be under the Bardarbunga caldera, leading to a 15 meter subsidence of the caldera itself. These changes are clearly observed on the surface of the glacier covering the volcano, say scientists.

Found this via the RUV Twitter site

 

 

Interesting that the depression, when measured on a "grand" scale looks minute,  but I wonder how much water there is in the bottom 100 metres now  --  rather than ice.  Looking at the bottom part of the graphic, if the cauldera is enclosed and there is nowhere for it to run off to, the amount of water will be colossal.

 

Looked up in Wikipedia, the cauldera is 70 sqkm, if we assume just the bottom 100M has melted, that 70 Billion tons of water  to vapourise it all you would need 1.582e+16 kJ (Joules) of energy. 

 

Hello irresistable force, meet immovable object   

Edited September 7, 2014 by NorthNorfolkWeather

[Midlands Ice Age]

Hi guys,

 

Have been lurking for nearly the 2 weeks now....

 

On Mila 2 cams you can now plainly observe at least 3 steam vents in the foreground  (white lifting upwards) and the fissure eruption is gradually  becoming hidden by the steam .

The eruption is looking more and more like an atom bomb going off on the Mila 2 cam..... Just saying...

 

Seriuosly though it looks like a very slow burner to me. Presumably the river will be blocked and will then look for alternative escapes. This could either enhance or detract from the expected eruption.  I guess it may form a dam  -it all depends of the build up of the lava compared with the the flow rate and hence the build up of the water. 

 

Meanwhile all is becoming quieter at the caldera.......

 

Do I hear a clock ticking away?  tick tock.......

 

MIA