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There has been earthquake activity today in Tungafellsjökull volcano. I don’t know what this means since I don’t have any history about eruptions in that volcano. None have been document in the past 1000 years, and none have shown up in the data for the past 8000 years at least. What I do know is that I suspect the volcano might have started to prepare for an volcano eruption in the future. At least Tungafellsjökull volcano was showing slightly higher activity in past few months then normal, but that earthquake activity did stop and everything did go back to normal until now. This might be as simple as just stress adjustment in the crust in the area. At current time I don’t think an eruption is imminent in Tungafellsjökull, but with no history to work with this volcano might surprise me and everyone else. For the moment I think it is just earthquake activity until I am disproved by the volcano or this earthquake activity just stops.
The caldera formation in Bárðarbunga volcano
The new caldera that is now forming in Bárðarbunga volcano is a large event, since Bárðarbunga volcano is a large volcano. GPS data (website here) says that here is still inflation ongoing in Bárðarbunga volcano and at the moment mostly in the dyke. What is so dangerous with this are many factors. Here is the top list of them.
The drop in certain parts of Bárðarbunga volcano down its slopes is up to 1800 meters.
The glacier over parts of Bárðarbunga volcano are up to 850 meters thick in the caldera. Outside the caldera the glacier is up to 600 meters thick.
There are hydro-power dams south-west of the Bárðarbunga volcano. Glacier flood might go that way. There are also some populated areas that might be at risk depending what way the glacier flood would go.
Populations at north of Jökulsá á Fjöllum glacier river (downstream) are at risk from large glacier flood. So are two bridges, the third one that is up on the high lands is not going to be saved.
There is going to be a huge ash cloud once Bárðarbunga volcano collapses into a new caldera. What damage that ash cloud is going to do depends on wind direction. If we have really bad luck we might be looking at air space closure for week or two in Europe depending on wind and weather systems. There are other risks that I don’t about yet.
Status update on Bárðarbunga volcano at 22:11 UTC
Posted on September 12, 2014 by Jón Frímann
This information is going to get outdated quickly.
Eruption in Holuhraun continues and there are no signs about it ending any time soon.
Lava lake has formed in one of the south crater according to the news today. The crater is not erupting at the moment.
Earthquake activity continues along the dyke south of the Holuhraun eruption.
Bárðarbunga continues to drop and I am estimating that the drop today is around 1 meter a day. This number has not been confirmed. Last confirmed number on the drop was that the Bárðarbunga volcano was dropping 90cm/day.
The area around the eruption site is toxic. Due to ever changing wind in the area the risk of getting SO2, CO, CO2 and other toxic gases over one self is always present.
There are warning in place for the SO2 pollution in Iceland at the moment. The warnings are issued based on wind direction at any given time.
The lava continues to flow into Jökulsá á Fjöllum glacier river. This lava is going to create a dam in next few days. The lava is flowing into the river at such force it doesn’t stop and doesn’t cool down properly to stop the flow of new lava into the glacier river.
I have been seeing harmonic tremor spikes all day today. I have traced them to Bárðarbunga volcano. I am not sure on location. It is difficult to know for sure what this means at the moment.
Radio broadcasting in Iceland is mainly on FM frequency, but also the long-wave. FM transmitters operate on electricity, but diesel backup power stations are to them and leave them running if a power failure occurs. As long as you can get oil on the transmitter, they are active. Retransmission are sent only electric and therefore inactive in a power failure. This means that FM broadcasts will be very gloppóttar.
The Tungnafellsjökull central volcano, located immediately NW of the massive Vatnajökull icecap, contains two calderas. One is largely filled by the Tungnafellsjökull glacier, and the other ice-free caldera located to the SE contains Pleistocene rhyolitic lavas. The 1535-m-high Tungnafellsjökull volcano is largely of Pleistocene age, but postglacial flank fissures on the NE side have produced young basalts. The Hágöngur central volcano to the SW is part of the Tungnafellsjökull volcanic system.
Eruption of lava pocket is great spectacle and many men want to get close to the disaster. The direct attendance is sightseeing over the volcanic both plane and helicopter. Friðgeir Gudjonsson in Reykjavik Helicopters says the last few weeks have been a lot of time at the company.
Sulfur pollution in East threatens not harvest grain farmers but volcanic ash could, however, had an impact. Farmers strive to thresh, including Eymundur Magnusson Vallanes in the Shire. He's expecting metuppskeru or up to 200 tonnes of barley.
"It has escaped so far and I hope it does not lie on us for real," says Eymundur. "It's just kind of surface contamination and does not go into the product and then the living through extensive cleaning before it goes on the market so that it interferes with nothing, I think."
A 4.7 tremor was measured in the morning at the north bosom Bárðarbunga. Another $ 5.2 was about eight in the evening. Minor tectonic movements around the swarm corridor indicate that magma flows into the corridor is slightly higher than the outflow of lava eruption in the hole, which is a change from the last few days.
More than 50 earthquakes have been recorded since midnight. Has slowed the unrest, according to the researchers Coordination Council. Lava flowed spent more than 18 miles northeast of gosstövðunum in hollow lava and greatly restrict the miðkvísl Jökulsárgöng the mountains. While there is still considerable activity in craters, has led to some of it, says volcanologist. Carton Bottom Bárðarbunga victorious yet.
Scientists came GPS meter above the middle of the box Bard bulge under difficult conditions yesterday it would allow closer monitoring of subsidence in the box bottom. Geophysicist Magnus Tumi Gudmundsson said yesterday has sunk fallen 21 meters. It seems to be pretty equal to distortion is 80 centimeters per day. In the pictures that were taken on the trip saw the ice cracks have formed inside the box, which normally would be no cracks to see. They are yet another confirmation of subsidence caldera floor.
Farmers in Fljótsdal planning to move threatens the corridors because of possible ash eruption in Dyngjujökli. Farmers go to the mountain tomorrow and Mela Just be speeded up by four days. Trial of þriðudag.
Mr. Ingimarsson fjallskil boss says better to have cash at home rather than in the wilderness begin to erupt under ice. Could also flood the Jökulsá the mountains meant that farmers would escape with no meat to Y and at. Instead of needing to increase the killing of Vopnafirði and Hofn.
No changes have occurred in the Seismicity of northern Vatnajökull since midnight. According to an announcement from the IMO has thirty seismometer most with recorder under Dyngjujökli and the crater, and the northern brim Bárðarbunga.
The largest earthquakes are two. Several earthquakes have been the caldera, the mountain tails and Tungnafellsjökul. Tremors of up to 3.1 were recorded at Bárðarbunga about half twelve at night, but shortly before eight last night was tremor of 5.1.