Vulkanen IJsland #16 met een Grimmige Grimsvotn.

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New eruption threat on iceland
Geologists on Iceland are warning of the increased risk of a fresh volcanic eruption after measuring an increased swarm of earthquakes around the island's second largest volcano.

Páll Einarsson, a professor of geophysics at the University of Iceland, says the area around Bárdarbunga is showing signs of increased activity, which provides “good reason to worry”.

He told the country's national TV broadcaster Rúv a shortage of seismometer measuring devices is making it more difficult to determine the scale and likely outcome of the current shifts.

But he said there was “every reason to worry” as the sustained earthquake tremors to the north east of the remote volcano range are the strongest recorded in recent times and there was “no doubt” the lava was rising.

The geologist complained that the lack of coverage of measuring devices means he cannot accurately detect the depth and exact location of the increased number of localised earth movements.

“This is the most active areas of the country if we look at the whole country together,” he told Rúv News. “There is no doubt that lava there is slowly growing, and the seismicity of the last few days is a sign of it.

“We need better measurements because it is difficult to determine the depth of earthquakes because it is in the middle of the country and much of the area is covered with glaciers.”

Respected volcano watcher Jón Frímann, said on his volcano watch blog: “After the Eyjafjallajökull volcano eruption in the year 2010 it seems that geologists in Iceland take earthquake swarms more seriously then they did before.”

He explained the Icelandic Met Office had on Sunday warned of the increased risk of a eruption in north-west side of Vatnajökull glacier due to the high earthquake activity in the area, and added: “It is clear that only time is going to tell us if there is going to be a eruption in this area soon or not.”

The last recorded eruption of Bárdarbunga was in 1910, although volcanologists believe its last major eruption occurred in 1477 when it produced a large ash and pumice fall-out. It also produced the largest known lava flow during the past 10,000 years on earth.

It is the second largest volcano on Iceland and is directly above the mantle plume of molten rock.

By comparison, Bárdarbunga dwarves the Eyjafjallajökull volcano, which shutdown most of Europe's airspace last year after its ash cloud drifted across the continent's skies.

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Warning of new icelandic volcano eruption
ICELAND’s second largest volcano looks set to blow, bringing far more chaos than last year’s eruption, ­geologists warned yesterday.

Professor Pall Einarsson, of the University of Iceland, said unprecedented tremors gave good reason to worry.

He added: “There is no doubt that lava there is slowly growing.”

Bardarbunga’s last major eruption, in 1477, shot vast clouds of ash into the air and produced the biggest lava flow of the past 10,000 years.

In comparison, the volcano which brought air traffic to a standstill last year, is tiny.

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Op woensdag 9 februari 2011 10:01 schreef Frutsel het volgende:
Nee, de Barbapappabunga ofzo
Kutnamen zeg...

Als je die naam van jou snel en plat uitspreekt hoor je iets als
"Wajnatjohkeel"... of te wel.. "Was je nat joh kerel"

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Op woensdag 9 februari 2011 10:04 schreef meteo-online het volgende:

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Mmmm hoe komt de media dan bij die vulkaan en nu weer een andere?

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Op woensdag 9 februari 2011 10:08 schreef Roel_Jewel het volgende:

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Vatnajökull is geen vulkaan, maar een gletsjer. Bárđarbunga is een berg en vulkaan die zich onder de ijskap van Vatnajökull bevindt.

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Op woensdag 9 februari 2011 10:10 schreef Frutsel het volgende:

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Zo zal het zijn

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Op woensdag 9 februari 2011 10:17 schreef Jumparound het volgende:
Kan de berichtgeving over de vulkanen op ijsland niet beter als volgt gedaan worden?

Niet de grootse vulkaan, maar een slagje kleiner staat op springen. Niet te verwarren met de "je mag niet meer vliegen" vulkaan, die is namelijk al uitgebarsten en is ook een stuk kleiner.

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Op woensdag 9 februari 2011 10:22 schreef Frutsel het volgende:

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met toevoeging: dat als deze iets een slag kleinere vulkaan echt srpingt je iets langer niet meer kan vliegen dan de eerder uitgebarsten kleinere vulkaan

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Op woensdag 9 februari 2011 12:02 schreef kahaarin het volgende:

De Bárđabunga zit onder de Vatnajökull (Merengletsjer), die heeft een eigen naam want er zitten daar heel veel vulkanen.

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Op woensdag 9 februari 2011 15:19 schreef Eyjafjallajoekull het volgende:
Ik heb gewoon bijna een half jaar die grafieken van *mezelf* in m'n bookmarks gehad. Net weggehaald en ja hoor, het begint weer.

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Op woensdag 9 februari 2011 12:02 schreef kahaarin het volgende:

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Ja idd, en die vulkaan heeft dan wel weer dezelfde naam als de gletsjer (jökull) als waar ze onder zit: Eyjafjallajökull.

De Bárđabunga zit onder de Vatnajökull (Vatnagletsjer), die heeft een eigen naam want er zitten daar heel veel vulkanen.

Ondanks het gebrek aan bevingen zijn de tremormetingen wel steeds aan het veranderen, als je dat zelf in de gaten wil houden dan kun je dat op deze kaart doen, klikken op de oranje punten geeft de metingen van dat betreffende meetstation weer.

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Op woensdag 9 februari 2011 18:10 schreef kahaarin het volgende:

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Psies, al die vulkanen....

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Badarbunga en Grimsvötn spannen vaker samen:

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Op woensdag 9 februari 2011 18:55 schreef kahaarin het volgende:

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Ja idd, ik ben benieuwd wat dat dat gaat worden....

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Op woensdag 9 februari 2011 10:29 schreef Jumparound het volgende:

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De "het-hangt-van-de-windrichting-af-of-de-europese-luchtvaar-naar-de-klote-gaat-vulkaan" dus

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Op donderdag 10 februari 2011 12:22 schreef lipjes het volgende:
het is momenteel wel lekker rustig bij die vulkaan moet ik zeggen

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Op donderdag 10 februari 2011 12:24 schreef Light het volgende:

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Dat kan ook de spreekwoordelijke stilte voor de storm zijn.

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Volcano professor hits back at scare stories
The Icelandic geophysicist, Professor Pall Einarsson, whose words have caused something of an international volcano scare, says he is dumbfounded by how much his message has changed in translation. Pall Einarsson was interviewed by Icelandic broadcaster RUV in Icelandic about a series of earthquakes in the highlands.The interview was then translated and used by Britain’s Daily Telegraph, among others. Since then the message has morphed out of all recognition, Einarsson says.

“It is really strange how this news came into existence. I wasn’t even warning of a likely eruption at Bardarbunga [in the interview],” he told IceNews. “The things I emphasised in my interview with RUV’s Bjorn Malmqvist were that the earthquakes at Bardarbunga and Kistufell last week are not unusual, there are often movements there, and sometimes much bigger than this.

“In the long-term, we can see an increase in earthquake intensity at Bardarbunga. But it is still a lot less than between 1974 and 1996.

“And finally that Bardarbunga is an active volcano and could of course prove dangerous, which is why there is always reason to monitor it closely; which is why we do,” Einarsson explains.

Some foreign media sources have quoted Professor Pall Einarsson as saying that a massive eruption is about to begin that will make last year’s Eyjafjallajokull eruption seem tiny in comparison. The professor reiterates his confusion at such stories, telling IceNews that he did not say anything of the sort.

Volcanic eruptions are always possible in Iceland, Einarsson says. There have been at least 19 eruptions in just the last 40 years — the majority of which were small and caused very little damage.

Icelandic volcanoes are one of the reasons tourists visit the country and sometimes (as at Fimmvorduhals last year) the sheer number of visitors is more dangerous than the volcano itself. “There are few things more moving than to watch a volcano erupting from a safe distance,” Professor Einarsson enthuses.

Bardarbunga is located near the middle of the Icelandic ‘hot belt’. It was, however, not known as a particularly powerful volcano before 1971 when the first satellite images of the area were released. Eruptions connected to this particular volcanic system took place in 1477-80, shortly after 1700, 1862-4 and most recently in 1996. There are probably several historic eruptions missing from the list due to the sheer distance from the nearest human settlements, the professor adds. “Small eruptions at this remote volcano could easily have escaped people’s notice. They are no more dangerous than that.”

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Op donderdag 10 februari 2011 12:24 schreef Light het volgende:

[..]

Dat kan ook de spreekwoordelijke stilte voor de storm zijn.

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Warning
A strong gale warning (more than 20 m/s) is in effect for the south and west parts by evening and violent wind up to 30 m/s tonight and in the morning. Strong gale is also espected in the north and east tonight and tomorrow.

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Op zaterdag 12 februari 2011 13:44 schreef lipjes het volgende:
is er meer data over bekend zoals VEI kracht oid?

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Op zaterdag 12 februari 2011 14:21 schreef DemonRage het volgende:

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Da's alleen bij uitbarstingen. Of is het al zover?

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Op zaterdag 12 februari 2011 14:40 schreef lipjes het volgende:

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is al een oude vulkaan dus zal wel bekend zijn van eerdere uitbarstingen neem ik aan.

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Op zaterdag 12 februari 2011 15:14 schreef rubbereend het volgende:
http://www.vedur.is/skjalftar-og-eldgos/jardskjalftar/
Waar staan die grote sterren eigenlijk voor?

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Op maandag 14 februari 2011 15:08 schreef Isiolo het volgende:
En het is weer saai in IJsland... zucht..

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New earthquake swarm in Hengill volcano
Posted on February 21, 2011 by Jón Frímann
A new earthquake swarm is currently taking place 2 – 5 km NE of Hellisheiđarvirkun. But that is a geothermal power plant that operates in Hengill volcano.

The largest earthquake so far is a ML1.5 in size when this is written at 03:27 UTC (04:27 CET). There is a good chance that this earthquake swarm is going to continue in the next few hours.

Small earthquake swarm in Krísuvík volcano
Posted on February 20, 2011 by Jón Frímann
Currently there is a small earthquake swarm in Krísuvík volcano. This earthquake swarm is small and is only about 20 or so earthquakes at current time. It is impossible to know if this earthquake swarm is going to continue or grow at present time. But it is not uncommon in this area for a small earthquake swam to be a warm up for a larger one. But as always there is just a wait and see what happens in the area.

The largest earthquakes in this earthquake swarm have reached up to ML2.0 in size so far.

Earthquake swarm at Upptyppingar
Posted on February 18, 2011 by Jón Frímann
I notice that there is a small, yet growing earthquake swarm taking place close to a small mountain named Upptyppingar. This mountain is within the fissure swarm of Kverkfjöll volcano but the area is in it self not active volcanically.

Few years ago (2007) there was a earthquake swarm in this area that did have something about 2000 earthquakes over a 48 hour period. The reason why there is earthquake activity in this area is due to magma being pushed up into the bedrock below. This process is something of the same that took place before the Eyjafjallajökull volcano eruption. But with the major difference that here is no central volcano doing this.

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Bardarbunga volcano in Iceland: a geologist’s analysis
This past spring, while the eruption at Eyjafjallajokull was taking place, there was large scale earthquake activity at Bardarbunga. The increased seismic activity in the area then, and again just a couple of weeks ago, created a lot of discussion and deliberation. Bardarbunga is a big volcano under the Vatnajokull ice cap with a large ice-filled caldera some 6-700 metres deep and a lateral volcano at Hamar to the south of the main crater. Bardarbunga is a central volcano in the Icelandic volcano system. The system’s fissure swarm stretches from the northeast to the southwest from the central highlands under the glacier; all the way from Tungnaa in the south to the lava fields west of Askja in the north. The system is over 100 kilometres long.

The northern part of the volcano lies under the Dyngjujokull outlet glacier and at Dyngjuhals, a ridge with crater rows and lava flow, cutting into the Odadahraun lava fields. The last eruption to take place there was in the second half of the 18th Century, both under Dyngjujokull and at Dyngjuhals. A Jökulhlaup (otherwise known as a glacier meltwater flood) ensued in the Jokulsa a Fjollum river. It is likely that Askja has not erupted in recorded history (since Iceland was settled), but volcanic activity at Gjalp in 1996, near to Bardarbunga, indicates it is part of the Grimsvotn system, according to the lava’s chemical composition

The southern part of the volcanic system is more active than the other half. Many large eruptions took place there in prehistoric times. Around the time of the settlement age in 870 AD, there was a powerful eruption (mainly tephra) and another powerful eruption cycle around 1480, with lava and tephra eruptions. The eruptions took place where there were a lot of lakes and many more were created in the craters, which are now popular trout fishing spots. The eruption fissure is around 40 kilometres long and the amount of volcanic material produced was huge, at some 1,500 million cubic metres. This volcanic activity on both occasions caused eruptions in the Torfajokull system and created, for example, the lava at Landmannalaugar.

It is often forgotten that an eruption took place near the present-day research station close to Tungnaarjokull, to the west of Vatnajokull, in 1862-64 – precisely in the southern part of the Bardarbunga system. It was not a particularly active series of eruptions, but the row of craters with a few separate sections is still 16 kilometres long, with many spatter and scoria craters and the lava field (Trollahraun) is around 30 square kilometres in area.

The next series of eruptions at Bardarbunga could of course happen anywhere, but the recent earthquakes indicate that an eruption could take place in a similar location to in the 18th Century. There are signs that magma is rising at great depth underneath the Bardarbunga volcanic centre. A future eruption under the glacier would be accompanied by a jökulhlaup, most likely in Kreppa and Jokulsa a Fjollum. Tephra would also likely be produced – possibly in large quantities.

There are also other possibilities, for example an eruption in the southern part of the system, but for now geologists at the Icelandic Meteorological Office are stressing that the earthquakes do not mean that an eruption is imminent

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A ML3.3 (EMSC 4.3) earthquake in Grímsfjall volcano
Posted on February 25, 2011 by Jón Frimann
A earthquake with the size of ML3.3 took place at 01:19 UTC in Grímsfjall volcano. At the current moment no other earthquakes have been spotted following this single event. It is also remains unclear at the moment if this is a start of a eruption in Grímsfjall volcano. But at the moment there is nothing that indicates that a eruption is about to start in Grímsfjall volcano. But that can change with out any warning at all.

Note that EMSC is reporting this earthquake with the size of ML4.3. It is unclear at the moment what is the correct size for this earthqua

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Two day long earthquake swarm in Krísuvík volcano
Posted on February 25, 2011 by Jón Frímann
While this earthquake swarm in Krísuvík volcano does not appear to be big in size. It is clear that was rather long and might even be ongoing. But it is interesting how long this earthquake swarm did last. So far the time is about 2 days. It is impossible to know if the earthquake swarm is over or not. Current number of earthquakes is about 60 earthquakes so far.

The earthquakes are on North-South fault line according to the visual evidence. Depth of the earthquakes is from 12 km and up to 3 km at the moment. It is hard to know at the moment if this is due to magma inflow under Krísuvík volcano or just normal tectonic activity along the rift zone in Reykjanes.

Icelandic news about this earthquake swarm.

Hrina smáskjálfta í Krýsuvík (Vísir.is, Icelandic)

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Op vrijdag 25 februari 2011 12:37 schreef kahaarin het volgende:

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Inderdaad, en ik heb het dit weekend weer druk....
_{*tikkie, jij bent em!*}

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Op zondag 27 februari 2011 14:24 schreef zenkelly het volgende:
Ja, ik had t ook al opgemerkt! Spannend! Loos alarm of niet?

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Op zondag 27 februari 2011 14:37 schreef kahaarin het volgende:
De tabel, de score is nu 356 bevingen: http://www.vedur.is/skjal(...)nesskagi/#view=table

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Given the location and how this earthquake swarm is behaving it is my opinion that this is due to a magma is pushing up the crust in this area. But it remains a question of this is going to start a eruption or not. But the chances are growing for as long as this earthquake pattern holds up in Krísuvík volcano. If a eruption starts in Krísuvík volcano it is going to one of Hawaii type eruption, unless it is under water then it is going to be explosive for as long there is water getting into the crater. Last time there was a eruption in this area a 25 km long eruption fissure did form.

For now however all that can be done is to wait and see what happens. This earthquake swarm is going to continue for the next few hours and even days