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Archive for the ‘Eyjafjöll’ Category

Eyjafjallajökull Eruption – MODIS Image – UPDATE May 8

Posted by feww on May 8, 2010

BREAKING NEWS: VOLCANIC ASH CLOUD FORCES CLOSURE OF 15 AIRPORTS IN PORTUGAL AND SPAIN

See Below for details.

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Eyjafjallajökull Glacier Volcano Continues to Eject Dense Plume of Ash


Iceland’s Eyjafjallajökull volcano continued to emit a dense plume of ash and steam on May 7, 2010. The plume extends southeast from the volcano, but curves south beyond the lower edge of the image. The large image, which includes a wider area, reveals that the ash is blowing over the Atlantic Ocean west of Ireland. On Iceland, low-level winds pick up ash that had settled on the land. This plume of resuspended ash blows south from the island. The higher-elevation volcanic plume casts a dark shadow on the lower-elevation resuspended ash. The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite captured this image on May 7, 2010. Image and caption: NASA E/O. Download large image (3 MB, JPEG)

Eruption in Eyjafjallajökull Status Report: 16:00 GMT, 07 May 2010

The following is a brief summary of the report:

  • Decrease in explosive activity since yesterday.
  • Plume height lower (7.6km max), ash color lighter.
  • Steam still rising from lava front under Gígjökul.
  • Large ash fallout reaching up to 60 km from the crater.
  • No sign eruption might be  ending.
  • Earthquakes are occurring at 5-13 km depth, frequency of occurrence lower than yesterday.
  • Surface deformation stabilized since yesterday.
  • Only 5 % of particles smaller than 10 micron (aerosols)


21-hour animation of ash cloud from Eyjafjallajökull volcano drifting from Iceland to Ireland and Scotland. Source: IMO . See also The initial ash cloud on 15th April. Click image to enlarge.

Eyjafjallajökull volcanic ash cloud shuts 15 airports in Europe

As the 2,000km (1,200mile) ash cloud further encroaches into European airspace, targeting tourist destinations, more  airport closures expected in northern Portugal and southern France.

List of the airports that have been affected, as of posting, includes Asturias, Bilbao, Burgos, La Coruna, Leon, La Rioja, Pamplona, Salamanca, San Sebastian,  Santander, Santiago, Valladolid, Vigo, Vitoria and Zaragoza.

UK’s Met Office said the Icelandic volcano was sending ash up to heights of 9.1km (30,000 ft ) at about 10:00UTC today.


Eyjafjallajökull Ash Cloud drifting toward southern Europe.
© Copyright EUMETSAT/Met Office

Volcanic Ash Advisory from London – Issued graphics (UK Met Office)


Click image to enlarge.


Webcame images by Mila
Click image to enlarge.

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Eyjafjallajökull – Shock Waves Caught on Video

Posted by feww on April 29, 2010

Eyjafjallajökull Still Erupting, Lava Flowing, Plume Staying Low

The following link to an Icelandic site, Visir,  shows a brief video footage of shock waves emitted by the Eyjafjallajökull Glacier volcano.

Latest image of eruption at Eyjafjallajökull


This image of steam and ash spewing out of the
Eyjafjallajökull Glacier is dated April 27, 2o1o and is one of the latest image of eruption posted  at the Institute of Earth Sciences, Nordic Volcanic Center. The moderators are still treating materials from the website as subject to copyright.  For more images visit their website.

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Lava finally flows from Icelandic scientific band

Posted by feww on April 25, 2010

Lava flows northwards from the Eyjafjallajökull crater, melting the glacial ice: Report

The local experts do not believe large-scale flooding could occur from the melt water, but then again …

Oh, and if you are wondering why everyone in Iceland is suddenly speaking about lava flow in the past tense, you’re not alone. The rascals didn’t tell anyone lava had started flowing 4 days ago!

Notice: The following updates were issued by various Icelandic organizations. Unlike the govt organizations in the US, nearly all of the  information broadcast by government organizations and educational outlets in Iceland and most European countries may be subject to copyright. If your use of their data goes beyond the educational use/ fair use, be sure to contact the authors for copyright clarification/ permission.

Department of Civil Protection and Emergency Management -Media team

Specialists from the Institute of the Earth Sciences (http://www.earthice.hi.is/ ) and the Icelandic Meteorological Office (http://www.vedur.is) flew over the eruption site in Eyjafjallajökull late yesterday. The lava flow seems to be of similar volume as in recent days (20-40 tons per second). The quantity of the volcanic plume is slowly decreasing. The flow of lava is most likely to have started near noon on April 21 when water started flowing continuously from Gígjökull. Steam plumes rose from the northern edges of the caldera after noon on that day and could be seen from a helicopter. Deflation associated with the volcanic tremor was noticed at the same time. There are no signs of melting or flow of water to the south. There are also no indications that the eruption is coming to an end.

There are still disruptions in domestic and international flights, according to information from ISAVIA, and passengers are therefore strongly advised to seek further information from air carriers and at: http://www.textavarp.is/ .

Icelandic Met Office Report

Eruption in Eyjafjallajökull, Iceland

Indications of lava flow to the north – 25 April 11:30

Yesterday evening, geophysicists from the Institute of the Earth Sciences found indications of lava flow from the eruption site. The risk of sudden melt water flow is, however, minor. Following is their description:

“North of crater a roughly 300 m long and wide depression has been melted out in the last three days. Steam plumes rise from the depression, especially at the margins. This is explained by lava flowing northwards from the crater with the steam rising where lava meets ice … Flow of lava is considered to have begun around noon on Wednesday 21 April.”

Icelandic Meteorological Office and Institute of Earth Sciences, UoI

Eruption in Eyjafjallajökull – status report 25 April 2010 at 1800

Eruption plume:
Height( a.s.l):  Unknown, not seen above cloud cover at 5.3 km.
Heading:  NW
Tephra fallout:  Minor (light fallout detected at two farms 10 km NW of vents)

Conditions at eruption site: Overall activity similar as yesterday.  Eruption seen from west in the morning – north crater still active.  External water has not affected vent activity much since 18 April.  Geologists field observations (2-10 km from vents) show that explosivity is magmatic and that the tephra produced since 18 April is much coarser than during first four days.  Explosions heard at Fljótshlíð, 10-15 km NW of vents.   Meltwater discharge suggest similar lava activity.  Processing of data obtained yesterday shows that lava had advanced 400-500 m northwards from crater, forming an ice depression extending some 700 m from vents.

Overall assessment:  Magma flow rate has remained at similar level over the last few days.  Plume activity is gradually declining.  Flow continues flowing towards north.  No signs of melting or meltwater discharge towards south.  No signs of termination of eruption.Eruption in Eyjafjallajökull – status report 24 April 2010 at 1700
Eruption plume: Height( a.s.l): 13000 feet (4 km)
Tephra fallout: Minor (plume dark but no reports of fallout in districts around volcano)
Meltwater: 100-120 m3/s, based on gauge at old Markarfljót bridge and a rough estimate of base flow.
GPS deformation: Indicates slow subsidence towards the center of the volcano.
Magma flow: Eruption plume: less or equal to 10 tonnes/s.
Lava flow: 10-30 tonnes/s
Total magma flow: 20-40 tonnes/s

For additional details see: Institute of the Earth Sciences

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Posted in eyjafjalla, Eyjafjallajökull, Eyjafjallajökull glacier, eyjafjallajoekull volcano, Eyjafjöll, Iceland volcano, Icelandic volcano | Tagged: , , , , , , , | 3 Comments »

Eyjafjallajökull Eruption – UPDATE 24 April

Posted by feww on April 24, 2010

Comparative Calm Before Explosive Storm?

A Powerful Earthquake May Strike Iceland

The Plume at Eyjafjallajökull Rises to a Height of about 7,000m Sporadically, Idling Mostly at 4,000m

Fire Earth Moderators believe the volcano is spewing more ash than it did 2-3 days ago, despite the local reports.


Webcam at Valahnúk. Image recorded at 13:15UTC on April 24, 2010. Click Image to enlarge.


Hvolsvelli View [best image available all day from the webcam. Reduced visibility caused  by volcanic ash, fumes, dust and clouds.]

Icelandic mat office said:

Eruption in Eyjafjallajökull, Iceland -Update on activity
Little changes – 24 April 2010 11:15

Volcanic tremor has been similar as the last 2-3 days.
Ash fall may be expected to the west and northwest from the eruption, minor in the Reykjavik area.
Water level in Markarfljót river is slightly higher than yesterday.

The Department of Civil Protection and Emergency Management, Media team, released the following bulletin earlier today:

News Release, 24 April 2010, 06:30

According to the Hvolsvöllur police, this was a quiet night. A little ash has fallen on Hvolsvöllur, and it is visible as a very fine dust on cars. The Weather Bureau expects strong winds from the northeast and the east along the southern coast, elsehwhere the winds will be softer and there will not be much precipitation. The ashen mist will probably move to the west and the northwest of the volcano, even reaching Reykjavík, but only in slight quantities

In a news release from the Chief Epidemiologist yesterday, it appears that wen ash mist occurs, or an increase in suspended particulates in the atmosphere, those who suffer from a dormant heart og lung disease are advised to remain indoors, but there is no call for using masks. It is expected that the eruption-related suspended particulates pollution in the capital area might be close to a similar pollution caused by traffic, and the warnings issued by health authorities will be in accordance with such pollution. The public should keep track of news and information and instruction on the websites of the Department of Civil Protection and Emergency Management, http://www.almannavarnir.is, and of the Environment Agency, http://www.ust.is .

According to information from the airports, air traffic is limited to and from Keflavík, Reykjavík and Akureyri at the moment. No IFR-permissions are issued for Akureyri Airport, but the Egilsstaðir Airport is open to all flight traffic. Further information will be released later this morning.

The information centre for the media at Hvolsvöllur (tel. 847-4846) will remain open during he week-end. A press representative will be there, but there will be no meeting with specialists at 8 am. On the other hand, such meetings will be held at the information centre in Skógarhlíð from 08:00 til 09:00 am, Saturday and Sunday. Today, geophysicist Sigurlaug Hjaltadóttir, from Iceland Weather Bureau, Árni Snorrason, director of the Weather Bureau, and Árni Birgisson, director of the airport and guiding dept. of  Isavia, will answer questions conveyed by the media and press agents.

Detailed Map of eruption Site [The Institute of Earth Science Nordic Volcanological Center]


Click on image to get larger map (pdf-file)
Prepared by: Ásta Rut Hjartardóttir (astahj@hi.is), Páll Einarsson (palli@hi.is)

See also

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Eyjafjöll Eruption Update – April 3

Posted by feww on April 3, 2010

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Fimmvörduháls Eruption May be Intensifying – A Second Fissure Has Appeared

A new volcanic fissure has appeared near Eyjafjallajökull in southern Iceland to the northwest of the original fissure on March 31. It may be a sign that the eruption at Fimmvörduháls is intensifying.

A pilot on a sight-seeing flight observed the vent at about 7:00PM  on Wednesday (local time). He saw a sudden flash of light followed  by a new rift, which opened up immediately after, a report said.


The natural-color satellite image (ALI on NASA’s EO-1) above shows a new fissure at Fimmvörduháls near Eyjafjallajökull ejecting steam. The vent, which appeared on March 31, is located  northwest of the original vent. Source: NASA


Map of the Lava flow. Click image to enlarge.
Full map including flow data and legend available at Map of the lava flow from 21 – 31 March 2010 (by Eyjólfur Magnússon, pdf file)

Latest and the most spectacular video of the eruption:

Earlier Videos

Technical information:

Webcams – Volcanoes in Iceland

Latest Images (RUV): http://www.ruv.is/flokkar/hamfarir

Related Headline News

Related Sites in Iceland (English)

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Eyjafjöll Eruption – Images of the Day

Posted by feww on March 27, 2010

Hvannárgil Canyon Lava Fall


Photo Credit:
RAX /Ragnar Axelsson/via MBL. Image may be subject to copyright.


The Lava Fall.
Photo by Páll Stefánsson. Image may be subject to copyright.

Lava from  Fimmvörduháls crater on a mountain pass in south Iceland has changed direction the Hrunagil canyon into the Hvannárgil canyon forming a spectacular 100-meter high lava fall.

“There is a continuous flow of lava,” geophysicist Magnús Tumi Gudmundsson told Morgunbladid. The lava flow now extends to about one kilometer from the fissure.

Another Disappointing Image from NASA


A natural-color satellite image showing …  The image was acquired on March 24, 2010, by the Advanced Land Imager (ALI) aboard NASA’s Earth Observing-1 (EO-1) satellite. Credit: NASA

Latest Videos

Technical information:

Webcams – Volcanoes in Iceland

Latest Images (RUV): http://www.ruv.is/flokkar/hamfarir

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Eyjafjöll Eruption – LATEST

Posted by feww on March 26, 2010

Latest available images of Eyjafjöll eruption

The following images pertain to Iceland’s 0.5-km long volcanic fissure on the northern side of Fimmvörðuháls, east of the Eyjafjallajökull ice cap, which began erupting on March 20, 2010.

Background:


Lava flow map 1, March 22, 2010. For credit see inset. Click image to enlarge.


Lava flow map 2, March 24, 2010. For credit see inset. Click image to enlarge.


Aerial photo of Fimmvörðuháls on Eyjafjallajökull, 22nd March 2010, between 8 and 9 o’clock. Steam is caused by lava melting snow. © Ólafur Sigurjónsson


From Heljarkambur, looking down into Hrunagil, 22nd March 2010 at 16:00. Lava flows into the gully. The snow is covered with ash. Photo: Einar Kjartansson. Image may be subject to copyright. Source: Icelandic Met Office


Hrunagil 15th July 2007, just south of Heljarkambur. Mudcovered ice at the bottom of the gully. Photo: Einar Kjartansson.  Image may be subject to copyright. Source: Icelandic Met Office.


The new mountain rises behind the crater. Photo by Páll Stefánsson. (Undated, but cover story published on March 26, 2010.) Source: Iceland Review. Image may be subject to copyright.


Automatic Earthquake Location Map of Iceland.  Most of the recent seismic activity has occurred near the  Eyjafjallajokull Glacier, with a few shock occurring close to the position of Katla, which is buried under the Myrdalsjökull icecap.  ©The Icelandic Meteorological Office

Videos:

More Detailed Information:

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Iceland Review (Online Publication in English)

Related Icelandic Institution

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Icelandic Volcano Erupts – VIDEO UPDATE

Posted by feww on March 23, 2010

Eyjafjöll Volcanic System Erupts

Eyjafjallajökull volcanic system erupted in the south of Iceland, forcing up to five hundred people to evacuate the area, prompting the authorities to declare a state of emergency and imposing a NO FLY Zone  over much of Icelandic airspace.

Background:

To watch the latest video of ongoing eruption at Eyjafjöll, recorded by RUV Iceland, Click Here (WMV)

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Icelandic Volcano Erupts – UPDATE

Posted by feww on March 22, 2010

Eruption at Eyjafjöll is consistent with recent global patterns of volcanism and tectonism. Wild eruptions may occur in Iceland and elsewhere—Fire-Earth

Eyjafjöll Volcanic System Erupts

Eyjafjallajökull volcanic system erupted in the south of Iceland, forcing up to five hundred people to evacuate the area, prompting the authorities to declare a state of emergency and imposing a NO FLY Zone  over much of Icelandic airspace.

Background: Volcano erupts near Eyjafjallajoekull, Iceland

At least three flights en-route Reykjavik from the US were ordered back to Boston, and up to 1,500 are currently stranded in the Reykjavik airport.

Where the Eruption Occurred


Location of the Eruptive Fissure.
Source: Nordic Volcanological Center. Click image to enlarge.

How Eruption Occurred

Eruption began at 23:52UTC on 20 March 2010 at  the Eyjafjallajökull volcanic system (also known as Eyjafjöll volcano). A red cloud appeared above the volcano, which lightened up the sky above the eruptive fissure. “The eruption was preceded with intense seismicity and high rates of deformation in the weeks before the eruption, in association with magma recharging of the volcano. Immediately prior to the eruption the depth of seismicity had become shallow, but was not significantly enhanced from what it had been in the previous weeks. Deformation was occurring at rates of up to a centimetre a day since March 4 at continuous GPS sites installed within 12 km from the eruptive site.” IESUI reported.

“The eruption broke out with fire fountains and Hawaiian eruptive style on about 500 m long NE-SW oriented eruptive fissure at N63º38.1′, W19º26.4′ on the northeast shoulder of the volcano at an elevation of about 1000 m. It was observed from air from 4-7 A.M. on March 21. Lava flows short distance from the eruptive site, and minor eruption plume at elevation less than 1 km was deflected by wind to the west. Volcanic explosive index (VEI) is 1 or less. Tephra fall is minor or insignificant. The eruption occurs just outside the ice cap of Eyjafjallajökull, and no ice melting is occurring at present.”


Surface temperature satellite image taken by MODIS shows the location of the eruption. Source: NASA via Nordic Volcanological Center. Click image to enlarge.


Source: Nordic Volcanological Center. Click image to enlarge.

The eruption occurred at a fissure on a 2 km wide pass of ice-free land between Eyjafjallajökull and its large neighbor Katla volcano which is buried under Myrdalsjökull ice cap. “Katla volcano is known for powerful subglacial phreatomagmatic eruptions producing basaltic tephra layers with volumes ranging from ~0.01 to more than 1 cubic kilometer.” Institute of Earth Sciences at University of Iceland (IESUI) reported.

Eyjafjallajökull is known to have erupted at least three times in the last 1100 years (settlement of Iceland). “The most recent began in December 1821 and lasted intermittently for more than a year. The neighbouring volcano Katla erupted then on 26 June 1823. Other eruptions include an eruption in 1612 or 1613, and about 920 A.D.”

Eyjafjallajökull is known for several episodes of unrest, “with documented sill intrusions in 1994 and 1999.”


The 2.5-km-wide summit caldera of Eyjafjöll located west of Katla volcano. Photo by Oddur Sigurdsson, 1992 (Icelandic National Energy Authority). Click image to enlarge.


Seismic Activity

Eyjafjallajökull has been experiencing intensive Seismic activity since late February with most of the shocks occurring at 7 to 10 km depth. “On March 19th a seismic swarm began east of the top crater, originating between 4 and 7 km depth.” Iceland Met Office reported.

“On March 19th a seismic swarm, began east of the top crater, originating between 4 and 7 km depth. The activity migrated eastwards and towards the surface on Saturday, March 20th.”

What Local Experts Say

Scientists at Nordic Volcanological Center say further volcanic activity in the area may be imminent, based on the fact that three previous eruptions at Eyjafjallajokull had all primed the powerful Katla volcano to erupt.

“What we know is that an eruption in Eyjafjallajokull seems to be a trigger for Mt Katla,” geophysicist Pall Einarsson said.

“The volcano has been inflating since the beginning of the year, both rising and swelling, even though we were seeing increased seismic activity, it could have been months or years before we saw an eruption like this.”

Einarsson believes that an eruption at Mt Katla would be a much greater and more serious event because molten lava would melt the glacier causing large-scale flooding.

Geophysicist Magnus Gudmundsson says it’s impossible to predict how long the Eyjafjallajokull eruption could last. “It could end tomorrow, it could go on for a year or two, but this is a small eruption.”

More facts about Icelandic Volcanoes:

  • Mt Katla last erupted in 1918.
  • The most recent eruption at an Icelandic volcano occurred in 2004.
  • Eyjafjallajokull Volcanic System was dormant since 1821.
  • Iceland has experienced 21 eruptions in the past 50 years.
  • Only one of the 21 eruption caused serious damage  when a volcano erupted in Westmann islands in 1973.

Map of Iceland Earthquakes (Last 48 hours) – Icelandic Met Office



© Veðurstofa Íslands

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