Alle vulkanen hebben een soort van basis resonantie, een soort van "vingerafdruk", een per vulkaan verschillende grondtoon. Het lijkt er nu op dat de manier van trillen is veranderd, dat betekent dat er in de vulkaan iets gebeurt waardoor dit mogelijk is. Wat dat precies is en hoe dat kan moet nog blijken.quote:Op zaterdag 5 februari 2011 00:59 schreef zenkelly het volgende:
Grimsvotn????![]()
[..]
En Kahaarin, wat zegt dat...die plaats wisseling van kleuren in de grafiek??
			
			
			
			| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22  | Sunday 06.02.2011 09:40:17 64.737 -17.291 5.3 km 2.0 54.39 6.2 km SW of Kistufell Sunday 06.02.2011 09:09:06 64.773 -17.253 13.5 km 1.2 99.0 2.3 km WSW of Kistufell Sunday 06.02.2011 09:01:27 64.760 -17.270 9.4 km 1.4 99.0 3.8 km SW of Kistufell Sunday 06.02.2011 08:37:50 64.788 -17.182 2.3 km 2.0 48.02 1.5 km ENE of Kistufell Sunday 06.02.2011 08:37:49 64.757 -17.268 9.8 km 1.5 99.0 3.9 km SW of Kistufell Sunday 06.02.2011 08:28:02 64.762 -17.245 8.7 km 1.3 99.0 2.7 km SW of Kistufell Sunday 06.02.2011 07:51:27 64.761 -17.267 9.6 km 2.6 99.0 3.6 km SW of Kistufell Sunday 06.02.2011 07:51:25 64.689 -17.020 1.1 km 3.3 90.01 13.6 km SE of Kistufell Sunday 06.02.2011 04:41:41 65.162 -16.287 5.1 km 1.4 30.41 3.2 km ESE of Herđubreiđ Sunday 06.02.2011 01:07:12 64.674 -17.131 4.6 km 3.1 67.93 12.4 km SSE of Kistufell Sunday 06.02.2011 01:07:07 64.503 -17.622 0.1 km 2.5 99.0 9.2 km E of Hamarinn  | 
			
			
			
			
			
			
			
			
			
			
			
			Lol, ik zat al te zoeken idd, 29 Km zou wel heel diep zijn, dan was ik begonnen met rondsturen van DM/PM/mail e.d. om te waarschuwen voor cataclystische taferelen.quote:Op zondag 6 februari 2011 12:31 schreef DemonRage het volgende:
En dit was de laatst gemeten:
06.02.2011 10:59:35 64.831 -17.282 29.5 km 1.7 31.71 6.6 km NNW of Kistufell
Behoorlijk diep (maar niet accuraat)
Oh... is alweer bijgesteld:
06.02.2011 10:59:35 64.759 -17.269 8.3 km 1.1 99.0 3.8 km SW of Kistufell
			
			
			
			quote:There might be a volcano eruption in less then a one year time in Báđarbunga volcano (Kistufell field)
I do not know if this is Icelandic media sensationalism or just a simple misquote in the news article. But according to Morgunblađiđ (mbl.is) in a interview with the geologist named Sigurlaugar Hjaltadóttir (works at Icelandic Met Office) she sad that there is more risk of a eruption in north-west side of Vatnajökull glacier due to the high earthquake activity in the area. But while the earthquakes continue to be at great depth, there is a less chance of a eruption in the area.
But she might be referring to is that a earthquake activity in the area might be increasing because of Grímsfjall volcano and Bárđarbunga volcano interaction. But it remains be seen if that is the case or not here. It is however clear that only time is going to tell us if there is going to be a eruption in this area soon or not.
			
			
			
			Zegguh, Fruts, als ik nu niet eerst een keertje had geklikt op show new messages dan had het hier mooi 2 keer gestaan!quote:
			
			
			
			lolquote:Op zondag 6 februari 2011 18:31 schreef kahaarin het volgende:
[..]
Zegguh, Fruts, als ik nu niet eerst een keertje had geklikt op show new messages dan had het hier mooi 2 keer gestaan!*thnx
*
			
			
			
			Dus om kort te zijn, het gebied waar de uitbarstingen zijn is erg actief maar deze vorm van activiteit, met name de tremormetingen, geeft toch reden tot ongerustheid.quote:Geologist worry about earthquake activity in Kistufell field (Bárđarbunga volcano)
Posted on February 6, 2011 by Jón Frímann
In my last blog post I did tell the news about the possibility about a eruption in the Kistufell volcano field. But that field is a part of Bárđarbunga volcano system and has a lot of earthquake activity since the beginning of earthquake recording in Iceland.
In the tonight news on Rúv about this area, Páll Einarsson geologist at University of Iceland says in the news on Rúv that there is a good reason to worry about this area. As it is one of the most active one in Iceland, but it is directly above the mantle plume under Iceland. Páll Einarsson also says in the news on Rúv that before the eruption in the year 1996, that took place in a volcanic ridge now named Gjálp there was a increase in earthquake activity in Kistufell field.
But due to continues earthquake activity there is it hard to know what is exactly going on there. Páll Einarsson also says in the news on Rúv that it is a problem that this area of Iceland lacks the proper coverage with seismometers. But they are few in this area and that makes it harder to detect the depth and the location of the earthquake that take place in this area of Iceland.
After the Eyjafjallajökull volcano eruption in the year 2010. It seems that geologist in Iceland take earthquake swarms more seriusly then they did before. As they did learn from Eyjafjallajökull volcano eruption that not all volcano start with few earthquakes just before they erupt, as is common with few volcanoes in Iceland.
The news from Rúv on this matter. Use Google Translate to understand.
Full ástćđa til ađ hafa varann á (Rúv.is)
Het is mogelijk dat dit nu aan de hand is onder de Vatnajokull.quote:RIFT VOLCANOES
Rift volcanoes form when magma rises into the gap between diverging plates. They thus occur at or near actual plate boundaries. Measurements in Iceland suggest that the separation of plates is a continuous process but that the fracturing is intermittent, analogous to a rubber band that is slowly stretched until it snaps. Earthquake swarms and volcanic eruptions occur when the stretching exceeds the strength of the near-surface rocks, which then fracture along steeply dipping cracks parallel to the rift. Basaltic magma rising along these fractures causes Icelandic-type fissure eruptions.
			
			
			
			Wie maakt 'm aan... en dan Bardarbunghole noemen.quote:Op zondag 6 februari 2011 21:52 schreef kahaarin het volgende:
We wachten wederom af, hadden we al een Badarbunga kloon...?
			
			
			
			
			
			
			
			Dan is het icesave verhaal wel uit de wereld.....quote:
			
			
			
			In de bijna 10 jaar dat ik op fok zit heb ik nog nooit een kloon gemaakt.quote:Op zondag 6 februari 2011 22:31 schreef kahaarin het volgende:
[..]
Dan is het icesave verhaal wel uit de wereld.....![]()
![]()
@DemonRage: leef je uit, als jij het niet doet dan een ander wel vrees ik.
			
			
			
			Herkenbaarquote:Op zondag 6 februari 2011 22:38 schreef DemonRage het volgende:
[..]
In de bijna 10 jaar dat ik op fok zit heb ik nog nooit een kloon gemaakt.
Ik heb wel mijn account 2x aan moeten maken. Omdat DemonRage "versie 1.0" met de servercrash in mei 2001 verloren is gegaan.
			
			
			
			
			
			
			
			quote:Renewed Tremors in Icelands Vatnajökull
Seismic activity was detected in the northwestern part of Vatnajökull glacier over the past few days and there is full reason to be on the alert, according to geology professor Páll Einarsson. More earthquake sensors are needed, he said.
Vatnajökull. Photo by Páll Stefánsson.
The series of earthquakes occurred close to Kistufell and Bárdarbunga, which are among the most geologically active areas in the country, ruv.is reports.
A few systems come together there. The largest is the Bárdarbunga system, which includes Veidivötn and Vatnaöldur and stretches way north of Dyngjujáls and west of Askja. Then there is the Grímsvötn system which lies further to the east, Einarsson explained.
He said Bárdarbunga itself and a fissure swarm to the northeast of it seem to be the most active right now. Seismic activity has in fact been ongoing in the area since sensors were first placed there, peaking before the volcanic eruption in Gjálp in 1996.
However, it is difficult to tell whether the tremors that are occurring now are a consequence of that eruption or whether another eruption might be coming up.
We need better sensors there. For example, it is difficult to measure the depth of the earthquakes in the area because sensors in the network in the center of the country are lacking. They would pick up movements in the earths crust, as a large part of the area is covered by a glacier, Einarsson said.
It is indisputable that the seismic activity is growing steadily in the areathe series of earthquakes over the past few days is an indicator of that. There is full reason to be on the alert. This is one of the most active areas in the country, he iterated.
According to visir.is, several earthquakes were measured by Bárdarbunga on Saturday night, the strongest of which was 2.6 points on the Richter scale.
Almost 40 earthquakes have been measured in the area in the past few days, culminating with an earthquake which was 3.4 points on the Richter scale in strength.
However, there are no indications of an immediate eruption and according to the latest news on visir.is, the tremors have subsided for now. Yet scientists expect an eruption in Vatnajökull in the near future, possibly by the end of this year.
The earthquakes are still at a considerable depth; the risk of an eruption grows the closer the tremors are to the surface.
quote:Fairly Strong Earthquakes Hit Icelands Largest Glacier
Two earthquakes were recorded in Mt. Grímsfjall by the Grímsvötn lakes on the Vatnajökull icecap, the largest glacier in Europe, this morning, measuring 4.2 and 3.5 on the Richter scale.
Grímsvötn. Photo by Páll Stefánsson.
These are probably the strongest earthquakes to hit in this area since 1934. Experts at the Icelandic Meteorological Office are currently reviewing data to see whether this is the case, visir.is reports.
The earthquake that hit in 1934 measured 4.5 points on the Richter scale in strength and led to a volcanic eruption.
Stronger earthquakes have hit Vatnajökull since but by Bárdarbunga in the glaciers northwestern part. Grímsvötn are located in the western part of the glacier.
Grímsvötn flooded late last year which was thought to be an indicator of an upcoming eruption. However, no eruption took place at that point.
			
			
			
			Welke hele grote bedoel je?quote:Op maandag 7 februari 2011 21:43 schreef Keiichi het volgende:
Maar die hele grote aardbevingen zie ik nergens terug op de kaart.
Deze?quote:06.02.2011 07:51:25 64.689 -17.020 1.1 km 3.3 90.01 13.6 km SE of Kistufell
Sunday
06.02.2011 01:07:12 64.674 -17.131 4.6 km 3.1 67.93 12.4 km SSE of Kistufell
Sunday
			
			
			
			omdat het in 1934 wasquote:Op maandag 7 februari 2011 21:43 schreef Keiichi het volgende:
Maar die hele grote aardbevingen zie ik nergens terug op de kaart.
			
			
			
			Nee, uit dit stuk text: "Two earthquakes were recorded in Mt. Grímsfjall by the Grímsvötn lakes on the Vatnajökull icecap, the largest glacier in Europe, this morning, measuring 4.2 and 3.5 on the Richter scale."quote:
			
			
			
			Was een stuk van 13 januari. Denk dat die al van de kaart verdwenen zijn?quote:Op dinsdag 8 februari 2011 08:24 schreef Keiichi het volgende:
[..]
Nee, uit dit stuk text: "Two earthquakes were recorded in Mt. Grímsfjall by the Grímsvötn lakes on the Vatnajökull icecap, the largest glacier in Europe, this morning, measuring 4.2 and 3.5 on the Richter scale."
			
			
			
			quote:Op dinsdag 8 februari 2011 08:59 schreef Frutsel het volgende:
[..]
Was een stuk van 13 januari. Denk dat die al van de kaart verdwenen zijn?
			
			
			
			quote: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.
			
			
			
			
			
			
			
			
			Steeds meer engelstalige media die het oppikt. Zal me benieuwen.. weliswaar nemen ze het van elkaar over net als met Yellowstone, maar zal er dan de komende dagen iemand opstaan die het tegendeel beweert... of zien we uiterlijk 2012 ( hmm.. wat was er ook alweer met 2012?quote: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.
			
			
			
			
			
			
			
			Mmmm hoe komt de media dan bij die vulkaan en nu weer een andere?quote: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"
			
			
			
			Vatnajökull is geen vulkaan, maar een gletsjer. Bárđarbunga is een berg en vulkaan die zich onder de ijskap van Vatnajökull bevindt.quote:Op woensdag 9 februari 2011 10:04 schreef meteo-online het volgende:
[..]
Mmmm hoe komt de media dan bij die vulkaan en nu weer een andere?
			
			
			
			Zo zal het zijnquote:Op woensdag 9 februari 2011 10:08 schreef Roel_Jewel het volgende:
[..]
Vatnajökull is geen vulkaan, maar een gletsjer. Bárđarbunga is een berg en vulkaan die zich onder de ijskap van Vatnajökull bevindt.
			
			
			
			Klopt inderdaad, waar wikipedia al niet goed voor isquote:
			
			
			
			
			
			
			
			met toevoeging: dat als deze iets een slag kleinere vulkaan echt srpingt je iets langer niet meer kan vliegen dan de eerder uitgebarsten kleinere vulkaanquote: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.
			
			
			
			De "het-hangt-van-de-windrichting-af-of-de-europese-luchtvaar-naar-de-klote-gaat-vulkaan" dusquote:Op woensdag 9 februari 2011 10:22 schreef Frutsel het volgende:
[..]
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
			
			
			
			Ja idd, en die vulkaan heeft dan wel weer dezelfde naam als de gletsjer (jökull) als waar ze onder zit: Eyjafjallajökull.quote:Op woensdag 9 februari 2011 10:29 schreef Jumparound het volgende:
[..]
De "het-hangt-van-de-windrichting-af-of-de-europese-luchtvaar-naar-de-klote-gaat-vulkaan" dus
			
			
			
			Even de naam van de gletsjer verbeterdquote: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.
			
			
			
			Lol, was alleen maar om de link Jökull-Gletsjer duidelijk te maken, maar idd, de Vatnajökull is de Merengletsjer.quote:Op woensdag 9 februari 2011 13:06 schreef Light het volgende:
[..]
Even de naam van de gletsjer verbeterd
			
			
			
			
			
			
			
			
			
			
			
			Jij weer!quote: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.
Die tremormetingen zijn van Grimsfjall (bij de Grimsvötn vulkaan).quote:Op woensdag 9 februari 2011 12:02 schreef kahaarin het volgende:
[..]
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.
			
			
			
			Psies, al die vulkanen....quote:Op woensdag 9 februari 2011 18:01 schreef DemonRage het volgende:
[..]
Jij weer!
't gaat nu over Bardarbunghole.
Badarbunga en Grimsvötn spannen vaker samen:quote:[..]
Die tremormetingen zijn van Grimsfjall (bij de Grimsvötn vulkaan).
En als ik op dit kaartje kijk:
http://www.volcanodiscovery.com/iceland.html
Dan zie je 2 vulkanen gekleurd: Katla (geel) en Grimsvötn (oranje)
quote:Many tephra layers originally thought to belong to other volcanoes have in the recent studies proved to be from Bárđarbunga. The Gjálp eruption in 1996 revealed that an interaction may be between Bárđarbunga and Grímsvötn. A strong earthquake in Bárđarbunga, about 5 on the Richter, is believed to have started the eruption in Gjálp.
			
			
			
			Lekker is dat... de grootste en gevaarlijkste vulkanen van IJsland die onrustig zijn.quote:Op woensdag 9 februari 2011 18:10 schreef kahaarin het volgende:
[..]
Psies, al die vulkanen....
[..]
Badarbunga en Grimsvötn spannen vaker samen:
[..]
			
			
			
			Ja idd, ik ben benieuwd wat dat dat gaat worden....quote:Op woensdag 9 februari 2011 18:14 schreef DemonRage het volgende:
[..]
Lekker is dat... de grootste en gevaarlijkste vulkanen van IJsland die onrustig zijn.
			
			
			
			
			
			
			
			
			
			
			
			Als het hele scheurenstelsel erbij openbarst dan euhmm... zoiets:quote:Op woensdag 9 februari 2011 18:55 schreef kahaarin het volgende:
[..]
Ja idd, ik ben benieuwd wat dat dat gaat worden....
			
			
			
			Oeh, mooie foto! Dat denk ik ook, mijn opmerking sloeg meer op we zullen zien hoe erg het wordt maar de foto maakt een hoop goed.quote:Op woensdag 9 februari 2011 20:02 schreef DemonRage het volgende:
[..]
Als het hele scheurenstelsel erbij openbarst dan euhmm... zoiets:
[ afbeelding ]
			
			
			
			Een grote uitbarsting kan makkelijk (delen van) het europese of amerikaanse luchtruim platleggen. In het beste geval gaat de as eerst ver naar het noorden, dan heb je vooral bij vluchten over het poolgebied een probleem.quote:Op woensdag 9 februari 2011 10:29 schreef Jumparound het volgende:
[..]
De "het-hangt-van-de-windrichting-af-of-de-europese-luchtvaar-naar-de-klote-gaat-vulkaan" dus
			
			
			
			Dat kan ook de spreekwoordelijke stilte voor de storm zijn.quote:Op donderdag 10 februari 2011 12:22 schreef lipjes het volgende:
het is momenteel wel lekker rustig bij die vulkaan moet ik zeggen
			
			
			
			wie weetquote:Op donderdag 10 februari 2011 12:24 schreef Light het volgende:
[..]
Dat kan ook de spreekwoordelijke stilte voor de storm zijn.
			
			
			
			Some foreign media hm... wonder who.. .:Pquote: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.”
			
			
			
			
			
			
			
			quote:Op donderdag 10 februari 2011 12:24 schreef Light het volgende:
[..]
Dat kan ook de spreekwoordelijke stilte voor de storm zijn.
Wel een gewonen stormquote: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.
			
			
			
			Jups, alleen gebibber:quote:Op vrijdag 11 februari 2011 20:53 schreef Isiolo het volgende:
Bijzonder veel seismische activiteit in IJsland vandaag
Geen stress.quote:Eartquake swarm in Hengill volcano
Posted on February 11, 2011 by Jón Frímann
The Icelandic volcano known as Hengill did have a minor earthquake swarm of 20 something earthquakes today. This earthquake swarm might be related to geothermal power plant activity nearby (by pumping down or up water in the area). But at the moment I do not have it confirmed and this has also not been confirmed by the news.
This earthquake swarm in this area is normal and this volcano has several every year as it located on the main rift zone in Iceland. The last large earthquake swarm in this volcano took place during the year 1997 to 2000. Then many earthquake up to size Mb5.0 took place in Hengill volcano.
			
			
			
			Dat probably extinct lijkt me niet helemaal correct, al denk ik niet dat er een uitbarsting gaat komen.quote:The massive subglacial Prestahnukur volcano at the SW end of the Langjökull icecap has associated rift zones to the north and SW that have erupted during the past 10,000 years.
Kaart
Hot springs are associated with the rhyolitic Prestahnukur central volcano. The classic Icelandic shield volcano Skjaldbreidur was formed at the southern end of the Prestahnukur volcanic system, between Thorsjökull glacier and Thingvallavatn lake. The broad, low-angle shield volcano produced 17 cu km of basaltic lava flows during the early Holocene.
Shield volcano (subglacial) 1390 m (4,560 ft) (?)
SW Iceland, 64.60°N / 20.58°W
Current status: (probably) extinct (0 of 5)
Typical eruption style: Effusive (lava flows).
Eruptions from Prestahnukur: none during historic times, last eruption radiocarbon-dated at 7550 BC +-500 years
---
Source: GVP, Smithsonian Institute
			
			
			
			
			
			
			
			Da's alleen bij uitbarstingen. Of is het al zover?quote:Op zaterdag 12 februari 2011 13:44 schreef lipjes het volgende:
is er meer data over bekend zoals VEI kracht oid?
			
			
			
			is al een oude vulkaan dus zal wel bekend zijn van eerdere uitbarstingen neem ik aan.quote:Op zaterdag 12 februari 2011 14:21 schreef DemonRage het volgende:
[..]
Da's alleen bij uitbarstingen. Of is het al zover?
			
			
			
			3 maarquote:Op zaterdag 12 februari 2011 14:40 schreef lipjes het volgende:
[..]
is al een oude vulkaan dus zal wel bekend zijn van eerdere uitbarstingen neem ik aan.
			
			
			
			
			
			
			
			Aardbevingen met een kracht van 3 of meer op de schaal van Richter.quote: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?
			
			
			
			
			
			
			
			Tremormetingen haal ik van deze kaart: http://hraun.vedur.is/ja/oroi/index.htmlquote:Op zaterdag 12 februari 2011 13:44 schreef lipjes het volgende:
is er meer data over bekend zoals VEI kracht oid?
zijn er tevens ook tremormetingen bekend?
			
			
			
			Lol, steeds als ik het in een weekend druk heb dan doen de vulkanen raar...quote:
Vulkanen IJsland #16 met een Grimmige Grimsvotn.quote:Op zaterdag 12 februari 2011 20:32 schreef 22 het volgende:
Hoe moet ik die tremormetingen lezen?
Waar moet ik op letten?
			
			
			
			
			
			
			
			Yupquote:Op maandag 14 februari 2011 15:08 schreef Isiolo het volgende:
En het is weer saai in IJsland... zucht..
			
			
			
			FF een update-je van de afgelopen dagen in Ijsland..het was immers weer weekend;-)quote: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.
			
			
			
			quote: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
			
			
			
			
			
			
			
			
			
			
			
			
			
			
			
			quote: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
			
			
			
			Hmm, je zou er bijna een complot in zien, de link met tremormetingen is down, zal het in de gaten houden.quote:
quote:A ML3.3 earthquake in Grímsfjall volcano
Posted on February 25, 2011 by Jón Frímann
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 earthquake.
Text updated at 11:40 CET on the 25th of February 2011. EMSC did change it down to ML3.3 size.
			
			
			
			Via www.ijsland-enzo.nlquote: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)
quote:Op vrijdag 25 februari 2011 12:37 schreef kahaarin het volgende:
[..]
Inderdaad, en ik heb het dit weekend weer druk....
*tikkie, jij bent em!*
			
			
			
			
			
			
			
			
			
			
			
			
			
			
			
			Nouja....quote:Op zondag 27 februari 2011 14:24 schreef zenkelly het volgende:
Ja, ik had t ook al opgemerkt! Spannend! Loos alarm of niet?![]()
![]()
			
			
			
			Geen zinnig woord over te zeggen, op het Volcano blog van Jon Friman hebben ze het er over dat de Ejyafjalla meer dan 1000 bevingen had voor ze ging. Vooralsnog geen vermindering van het aantal bevingen.quote:Op zondag 27 februari 2011 14:24 schreef zenkelly het volgende:
Ja, ik had t ook al opgemerkt! Spannend! Loos alarm of niet?![]()
![]()
			
			
			
			
			
			
			
			Plus de 'swarm' die de afgelopen dagen al heeft plaatsgevonden! Daarmee wordt de score van bevingen nóg hoger!quote: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
Jon Frimanquote: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
			
			
			
			Die tabel begint op de 25e.quote:Op zondag 27 februari 2011 14:52 schreef zenkelly het volgende:
[..]
Plus de 'swarm' die de afgelopen dagen al heeft plaatsgevonden! Daarmee wordt de score van bevingen nóg hoger!
[..]
Jon Friman
			
			
			
			
			
			
			
			Ben ook wel benieuwd.quote:Op zondag 27 februari 2011 17:18 schreef Isiolo het volgende:
Over de 300.
Is er een webcammetje beschikbaar voor de eventuele spleet eruptie ?
			
			
			
			
			
			
			
			
			
			
			
			\o/ even 100 erbij in 1 uurquote:Op zondag 27 februari 2011 22:18 schreef kahaarin het volgende:
500 inmiddels: http://www.vedur.is/skjal(...)nesskagi/#view=table
			
			
			
			Volgens mij pas als hij echt gaat ploffen, al vaker gezien dat zoiets ineens als een nachtkaars uitdooft.quote:
			
			
			
			
			
			
			
			Jah, het weekend is bijna omquote:Op zondag 27 februari 2011 22:42 schreef kahaarin het volgende:
[..]
Volgens mij pas als hij echt gaat ploffen, al vaker gezien dat zoiets ineens als een nachtkaars uitdooft.
			
			
			
			512 inmiddels: http://www.vedur.is/skjal(...)shryggur/#view=tablequote:
Lol, ik heb het gevoel dat dit morgen nog wel door gaat, zomaar een ingeving.quote:
			
			
			
			Hmm, die ontkent wel meer geloof ik...quote:Op zondag 27 februari 2011 22:51 schreef Isiolo het volgende:
Kadhafi heeft zojuist de bevingen in IJsland ontkent.
			
			
			
			quote:Op zondag 27 februari 2011 22:51 schreef Isiolo het volgende:
Kadhafi heeft zojuist de bevingen in IJsland ontkent.
			
			
			
			Vlak voordat Ejyafjalla ging waren er meer dan 1000 bevingen in een zwerm. Dit gaat ook lekker door en het vermoeden is dat het magmatisch van aard is, niet tektonisch, afwachten dus.quote:Op zondag 27 februari 2011 23:01 schreef Honingbijtje het volgende:
Wow. Wat is eiglijk het record bevingenin een dag?:O
			
			
			
			
			
			
			
			Die van 25-2 zijn nu uit de lijst, ik denk dat de meetapparatuur ook een beetje van slag kan zijn geweest door de enorme zwerm, vooralsnog is het daar nog lang niet rustig:quote:Op maandag 28 februari 2011 08:12 schreef Resistor het volgende:
Volgens mij ging er iets mis bij de seismografen, er zijn er nu maar 156 'over' van de afgelopen 48 uur, er is even wat weggefilterd/onder het tapijt geschoven.
Ik weet ook wel dat die van de dag voor eergisteren nu weg zijn, maar er waren er gisteren zo veel bij gekomen dat het wel terug te vinden moet zijn. Er waren er ook een aantal 3+, en die zie ik ook niet meer.
			
			
			
			
			
			
			
			
			
			
			
			Ja, lijkt er op dat ze de bevingen vanochtend an het verifieren waren, zo klop het weer en het totaal gaat nu ruwweg (met de 25e erbij) richting de 750 totaal.quote:
			
			
			
			Ik denk dat het punt was dat ze vanmorgen de bevingen aan het checken waren, soms ontstaat er een echo doordat 1 beving door verschillende apparaten als aparte bevingen worden geregistreerd. Er stonden er idd eerst veel minder dan er nu weer staan dus denk ik dat we aan het kijken waren op het moment dat ze ze weer opnieuw aan het invoeren waren oid.quote:Op maandag 28 februari 2011 15:02 schreef Keiichi het volgende:
Als er een storing aan een seismograaf geweest zou zijn, zou dat toch vrij goed in de locatie bepaling te zien moeten zijn? Als 1 seimosgraaf iets registreert en bv 5 andere helemaal niets, dan is er zelfs helemaal geen locatie aan vast te knopen.
			
			
			
			quote:Hydrothermal areas grow larger in Krýsuvík volcano due to earthquake swarm
Posted on February 28, 2011 by Jón Frímann
According to news from Rúv. It appears that hydrothermal areas in Krýsuvík volcano are growing larger following the earthquake swarm in the past few days. This same news also tells that the number of cracks in the ground have grown in numbers following the earthquake swarm, this allows more water to get into contact with the hot rock and that warms the water up fast.
Currently the earthquake swarm in Krýsuvík volcano is quieting down. But that might chance without any warning at all. But wont be surprised if the earthquake swarm stops completely.
In my personal opinion this is a clue that magma might be pushing its way up the Krýsuvík volcano system. I get the clue from the increased hydrothermal activity in the this area. But at the moment it is too early to know for sure if this is going to result in a eruption or not. But if this activity continues as it has then a eruption is going to happen one day. That can also chance without any warning at all. But this type activity means that status of the volcano it self is constantly changing and makes it unpredictable. How eruptions in Krýsuvík volcano behave is also a big unknown.
Update: According to Rúv evening news (Icelandic, video) there appears to be magma related aspect to this weekend earthquake swarm in Krýsuvík volcano. According to Dr. Páll Einarsson geologist at Iceland University it appears that magma is the source (as stated above) of this weekend earthquake swarm. This news also says that there has been a lot of earthquake activity in Krýsuvík volcano over the past two years and this earthquake activity is not only tectonic as is common in this area. The news at Rúv also says that geologist in Iceland are wondering and unsure what exactly is going on at Krýsuvík volcano at the moment. But the reported inflation in the news at Rúv is sad to be 10 cm (I do not know if that number is accurate or not). But it clearly a reason now to watch the activity at Krýsuvík volcano. If there is a eruption in Krýsuvík volcano it is going to be a harmless (as it can be) lava eruption. Unless it is under water, but then there is a Surtsey type of eruption for as long there is water getting into the crater. So dont expect aircraft problem if there is a eruption in Krýsuvík volcano.
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