Another Icelandic volcano eruption on the cards
Discussion
Puggit said:
These pics are, of course, just the fissure. I hope some cameras are still pointing at Bardarbunga for the main event.
Indeed. I hope it's covered from every angle. She'll do what she'll do. At least let us admire natures full fury in HD.(I fly on Thursday, a Friday eruption works for me.)
OK, stupid question time. What is the significance of the caldera floor dropping and its link to potential eruption? Is it to do with pressure being tapped off through the dyke(s), or is the pressure under the caldera floor just increasing through the sheer weight above it and when it compresses enough, it will just explode (in a similar fashion to diesel combustion in an engine)? Obviously, it is completely different to the engine analogy in terms of "ignition" but would the falling floor help trigger a big release of magma?
Wing Commander said:
OK, stupid question time. What is the significance of the caldera floor dropping and its link to potential eruption? Is it to do with pressure being tapped off through the dyke(s), or is the pressure under the caldera floor just increasing through the sheer weight above it and when it compresses enough, it will just explode (in a similar fashion to diesel combustion in an engine)? Obviously, it is completely different to the engine analogy in terms of "ignition" but would the falling floor help trigger a big release of magma?
Images are in Icelandic, but this should help: http://www.bardarbungavolcano.com/Home/News/88The camera's are pointing at the volcano, it is often over exposed though so not obvious. I think.
I understand that as pressure is released from the dyke the caldera can collapse and that can initiate an explosive eruption. Mechanics evade me at the moment.
http://www.ruv.is/frett/gravely-concerned-about-ba...
I understand that as pressure is released from the dyke the caldera can collapse and that can initiate an explosive eruption. Mechanics evade me at the moment.
http://www.ruv.is/frett/gravely-concerned-about-ba...
Puggit said:
Images are in Icelandic, but this should help: http://www.bardarbungavolcano.com/Home/News/88
Ah, thats better. I see now.Puggit said:
Wing Commander said:
OK, stupid question time. What is the significance of the caldera floor dropping and its link to potential eruption? Is it to do with pressure being tapped off through the dyke(s), or is the pressure under the caldera floor just increasing through the sheer weight above it and when it compresses enough, it will just explode (in a similar fashion to diesel combustion in an engine)? Obviously, it is completely different to the engine analogy in terms of "ignition" but would the falling floor help trigger a big release of magma?
Images are in Icelandic, but this should help: http://www.bardarbungavolcano.com/Home/News/88
Puggit said:
Feels like we are entering a new stage - whatever that might be.
Weird that the mainstream press aren't really picking up on this.The potential for a Europe wide life altering event (and it's without doubt not a case of if, it's a case of when), and all it get's is the odd piece about how your flight might be delayed by The Mail.Tunku said:
Had me going initially a few days ago as well. Then I saw it zoom in and out. Zoomed out stable of course. Look at number 1 when the streams are uo, rock solid and they are in the same location I think.Been some really wobbly pictures as well. Expect it is not easy to get a stable link from there.
Don't think this has been posted- its the latest daily Kos report
http://www.dailykos.com/story/2014/09/11/1329129/-...
the bit i found really interesting was the map with stars on- stars show any eathquake over "3"- they is a hell of a cluster.
There also seems to have been 2 eathquakes of magnitude 4 plus within 11 seconds of each other in the caldera.
Its actually a little worrying!
http://www.dailykos.com/story/2014/09/11/1329129/-...
the bit i found really interesting was the map with stars on- stars show any eathquake over "3"- they is a hell of a cluster.
There also seems to have been 2 eathquakes of magnitude 4 plus within 11 seconds of each other in the caldera.
Its actually a little worrying!
PugwasHDJ80 said:
Don't think this has been posted- its the latest daily Kos report
http://www.dailykos.com/story/2014/09/11/1329129/-...
the bit i found really interesting was the map with stars on- stars show any eathquake over "3"- they is a hell of a cluster.
There also seems to have been 2 eathquakes of magnitude 4 plus within 11 seconds of each other in the caldera.
Its actually a little worrying!
It's quite easily explained (I think)... The magma chamber under Bardarbunga appears to be emptying out in a controlled fashion via the fissures to the NE. An empty magma chamber does not have the strength to hold the volcano above it. The roof isn't simple rock, it's melting rock. So the volcano is falling in to itself.http://www.dailykos.com/story/2014/09/11/1329129/-...
the bit i found really interesting was the map with stars on- stars show any eathquake over "3"- they is a hell of a cluster.
There also seems to have been 2 eathquakes of magnitude 4 plus within 11 seconds of each other in the caldera.
Its actually a little worrying!
The question is what this causes. Will it be an eruption, or will it shut itself down? Interesting times!
Also worthy of note is the earthquake cluster to the NW of Bardarbunga. This is Tungnafellsjökull - which has never erupted in recorded times. No glacier here, so less danger from ash.
Interesting update from the site: http://www.dailykos.com/story/2014/09/11/1329129/-...
Interesting analysis of the river temperatures. I enjoyed the Satnav comments
Interesting analysis of the river temperatures. I enjoyed the Satnav comments
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