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Eyjafjallajökull Caldera Eruption

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posted on Apr, 21 2010 @ 10:11 PM
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reply to post by Oilbourse2006
 


I had the same thought... they can see it's going up so why not move the bar already?
Wonder how long they'll leave it knocking on the ceiling


Obviously it's automated, though, so I don't think there's a mad professor sat there adjusting it


[edit on 21-4-2010 by MoorfNZ]




posted on Apr, 21 2010 @ 10:21 PM
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Ohh it's up again... wonder if they'll let it stay put this time

"mid" up too.



[edit on 21-4-2010 by MoorfNZ]



posted on Apr, 21 2010 @ 10:24 PM
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heh I was just going to say the same thing
6 mins til we find out.



posted on Apr, 21 2010 @ 10:27 PM
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A thought just struck me, what if .. As the E15 eruption slows down, the tremors are increasing due to more pressure between E15 and Katla? That would cause Katla to go boom at some point as that pressure has to go somewhere (Although I think a new explosive event at E15 is more likely)

These tremors are more sustained since even before the eruption..



posted on Apr, 21 2010 @ 10:31 PM
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I remember some plots posted a while back (see example in link below) - and even here at the levels shown people don't think they look good - and now they've increased much more.

Baffled ...

www.abovetopsecret.com...

[edit on 21-4-2010 by MoorfNZ]



posted on Apr, 21 2010 @ 10:31 PM
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well I think the 1500 mark is going to stay with us for a while now with another uptick..

hraun.vedur.is...



posted on Apr, 21 2010 @ 10:31 PM
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Musician releases song to aid pronunciation of Iceland volcano Eyjafjallajokull

Wednesday, April 21, 2010 12:38 IST

London: A musician in Iceland has composed a light-hearted song in a bid to help people with the pronunciation of the name of the volcano, which has caused travel chaos.

Eyjafjallajokull - pronounced roughly ay-uh-fyat-luh-yoe-kuutl — has left many people confused.

The name has been formed through merging three Icelandic words via a process call “agglutination”, where separate ideas are put together to form a composite idea.

In this case, Eyjafjallajokull means “island-mountain-glacier,” reports the Telegraph.

Thus, many people have concluded that it may not refer to the volcano at all but, more accurately, “the glacier on the mountain which looks like an island”.

It is likely the volcano has been called many things that are not its proper name since it threw up vast plumes of ash clouds and forced airspace across Europe to be closed.

Eliza Geirsdottir Newman, the musician in question, performed her song to the broadcaster Al Jazeera to help people remember the correct pronunciation.

Playing a ukulele, she sang, “Eyjafjallajokull is a long, long name/ For such a small glacier, with such notorious fame/ And Eyjafjallajokull has caused quite a stir/ And no-one can fly anywhere except the birds/ Please stop it Eyjafjallajokull.”

www.dnaindia.com...



[edit on 21-4-2010 by berkeleygal]



posted on Apr, 21 2010 @ 10:34 PM
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Originally posted by Oilbourse2006
well I think the 1500 mark is going to stay with us for a while now with another uptick..

hraun.vedur.is...


Unreal!!

Are there charts from the previous eruptions archived anywhere so that they can be compared?

Where's Puterman when you need him - be interested to hear his thoughts on the tremor trends...

[edit on 21-4-2010 by MoorfNZ]



posted on Apr, 21 2010 @ 11:16 PM
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hraun.vedur.is...

Seismic activity confirmed, in between E15 and Katla.

looking for previous eruption seismic data



posted on Apr, 21 2010 @ 11:32 PM
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Thursday
22.04.2010 03:45:10 63.602 -19.460 1.1 km Mg 2.1 80.17 8.2 km NNE of Skógar

Thursday
22.04.2010 03:30:23 66.553 -18.931 8.7 km Mg 2.2 48.91 40.8 km W of Grímsey

Thursday
22.04.2010 03:17:20 66.543 -18.866 11.5 km Mg 1.8 63.05 37.9 km W of Grímsey

Thursday
22.04.2010 01:43:02 66.428 -17.387 4.7 km Mg 1.8 90.01 30.3 km ESE of Grímsey

en.vedur.is...=table



posted on Apr, 21 2010 @ 11:37 PM
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Iceland Weather Forecast

Whole country
Forecast for next 24 hours
Northeast 5 to 10 m/s, but slighter wind today. Some snow or snowshowers in the south and occasional snowshowers in the north, but fair in the southwest.

Temperature 0 to 5 deg. C, in the south and west parts during the day, elsewhere frost 1 to 5 deg. C.

Comment from the forecaster : High probability is for winter and summer to freeze together tonight. Old folktales say that we may expect good and prosperous summer, if last day of winter and first day of summer freeze together.

Forecast made 22.04.2010 01:08 GMT



posted on Apr, 21 2010 @ 11:49 PM
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Katla seismicity

By Heidi Soosalu

The Katla volcano under the Mýrdalsjökull glacier is known to have seasonal seismic activity – earthquakes concentrate to the latter part of the year. The seismicity is interpreted to be related to the deloading of the thin crust above the magma chamber due to the summer melting of the ice cap, and to high groundwater pressure in the caldera roof at the same time.

There are two distinct seismic areas under Mýrdalsjökull. The most active area is located at the Goðabunga rise in the western part of the glacier, and the other one in the Katla caldera in the middle part. The earthquakes in both of the places are volcanic in nature. They start with rather high frequencies, and the onset can be anything from clearly impulsive to emergent. The continuation of the signal consists of lower frequencies only. No clear S-wave are seen in most of the seismic records, especially not in the signals from Goðabunga.

Due to the nature of the Katla events it is somewhat difficult to estimate their magnitudes. However, they are seldom larger than local magnitude (ML) 4. It is worth noticing that the local population rarely feels Katla earthquakes, though inhabited areas are situated quite near. The depths of the Katla events are difficult to estimate, as well, but they seem to be shallow, within 0-5 km.

Since 1999 Katla has been showing signs of unrest. In July 1999 a small glacial flood lasting less than 24 hours was observed. It is possible that it was caused by an intrusion of magma or even a small subglacial eruption. So far this has not been followed by further eruptive activity. The seismicity in the year 1999, on the other hand, had the typical seasonal pattern and was not exceptional. During the year 2002 the seismic activity in the Katla area has risen dramatically. In the spring the earthquakes of the fall 2001 did not cease to occur in a typical manner, but continued throughout the year on a daily basis. Their magnitudes have been mostly below 2.5, but a couple of events larger than ML 3 have been observed.

www.earthice.hi.is...



posted on Apr, 21 2010 @ 11:52 PM
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Eruption in Eyjafjallajökull

Eruption update 21 April
Eruption continues with less explosive activity. Eruption rate is inferred to have declined over last few days and now be an order of magnitude smaller than during the initial 72 hours of the eruption. Present eruption rate is estimated to less than 30 m3/s of magma, or 75 tonnes/s , with a large uncertainty.

Eruptive style: The northernmost one of two main craters in the summit caldera is active. Phreatomatic explosive activity occurs with some lava spatter at craters.

Plume height: about 3 km

Tephra dispersal: local towards the south

Meltwater: minor, but what is melted flows down into Markarfljót, no signs of water accumulation in craters

Seismic tremor recorded by the Icelandic Meteorological Office: some fluctuations but mostly stable. Tremor is not decreasing and does not reflect the decline as inferred for the eruption rate.

GPS-measurements: indicate continuing small pressure decrease under the volcano at a similar rate.

Composition of erupted material: Samples collected April 19 show same composition as early in the explosive phase, but fluorine content is higher. Samples collected 19 April have 850 mg/kg (initially it was 25-35 mg/kg). This is due to the change in eruptive style – tephra is now not washed to the same extent by water in the eruptive plume.

Amount of erupted material: Uncertain but on the order of 100 millon cubic meters. Tephra next to craters is 20-30 m thick.

Compiled by: Freysteinn Sigmundsson, Magnús Tumi Guðmundsson, Guðrún Larsen, Níels Óskarsson, Sigurður Reynir Gíslason, Páll Einarsson, Sigrún Hreinsdóttir, Rikke Pedersen, Ármann Höskuldsson, Guðrún Sverrisdóttir, other staff of Institute of Earth Sciences and collaborators.

www.earthice.hi.is...



posted on Apr, 22 2010 @ 12:22 AM
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I just emailed one of the research volcanologist at the University of Iceland with questions about the graph and what we were looking at, hopefully I will get a response to clarify some information.



posted on Apr, 22 2010 @ 01:26 AM
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Here is the response I got.

Hello

The tremor is continuous shaking of the ground originating in the magma conduit at crater. There is no sign of intrusions moving away from the top of Eyjafjallajökull, such events would be detected by the GPS network. It shows slow subsidence indicating removal of magma from below - a signal expected in a volcano which is gradually draining its magma sources.

Tremor amplitude is not always correlated with magma discharge.

Best wishes, Magnus



posted on Apr, 22 2010 @ 02:04 AM
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reply to post by Oilbourse2006
 


Thank you for inquiring! Still a little unsettling...



posted on Apr, 22 2010 @ 02:13 AM
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Time to update the chart again to 1600! spike went off the scale, it went from 1000 to over 1500 in 20 mins!

but per the email, it doesnt necessarily mean anything. It would be nice to get realtime GPS co-ordinates now



posted on Apr, 22 2010 @ 03:10 AM
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Peek a boo

There she is





[edit on 22-4-2010 by berkeleygal]



posted on Apr, 22 2010 @ 06:10 AM
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WOW the Hekla Helicorders just went off the scale Here

Bottom Plot on page, updates every few mins........

Is something about to go boom?

[edit on 22-4-2010 by NotAgain]



posted on Apr, 22 2010 @ 06:51 AM
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Originally posted by Oilbourse2006
Time to update the chart again to 1600! spike went off the scale, it went from 1000 to over 1500 in 20 mins!

but per the email, it doesnt necessarily mean anything. It would be nice to get realtime GPS co-ordinates now


It's still not up there with the previous day's activity though...

hraun.vedur.is...



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