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Bárðarbunga and Askja - Volcanic Activity


lorenzo

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Posted
  • Location: Western Isle of Wight
  • Weather Preferences: Snow, Storm, anything loud and dramatic.
  • Location: Western Isle of Wight

 http://www.ruv.is/frett/sprungur-i-holuhrauni-a-myndbandi

Sorry if already posted but that video is quite an eye opener

Its those rivers why has the water not exploded when it falls into those cracks and sinks down? I am sure the magma has not arrived yet.

Breath taking when viewed from the plane most prob'

 

B/W the The edge Dyngjujökull by Holuhraun, view to the north. photo on todays IMO update is captioned wrong its looking South actually, over worked IMO employees poor souls.....

 

Oh god my letters have gone small now  :closedeyes:

 

Oh there is one thing the IMO on their update today the picture titled The edge Dyngjujökull by Holuhraun,  Could somebody please take that silly 2001 0.1 megapixel camera off of them and give them a DSLR  :nonono: 

Edited by Rustynailer
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Posted
  • Location: South Kyme, Lincolnshire
  • Location: South Kyme, Lincolnshire

Todays summary from the Icelandic meto office

 

28th August 2014 18:14 - from geoscientist on duty

Since midnight over 1100 earthquakes have been detected by the automatic system. The dyke does not appear to have migrated further north since noon. The main activity is in the dyke and at similar depth as before (8-12km). One earthquake of M5 occurred at 08:13 AM by the northern rim of the Bardarbunga caldera. Two minutes earlier (08:11) another event of M3.9 occurred at a similar location. A few earthquakes were detected near Askja, the biggest one of M2.7.

Dyngjujökull - flight today
MJR_flug_20140828.JPG
The edge Dyngjujökull by Holuhraun, view to the north. Note, that the glacier appears dark on the photo. Cracks can be seen, e.g. by the little lake in the center of the photo, and they stretch towards north away from the lake. White streaks below left are probably cracks in the glacial ice. Photo: Matthew J. Roberts.
28th August 2014 12:35 - from of the Scientific Advisory Board

Scientists from the Icelandic Meteorological Office and the Institute of Earth Sciences, together with representatives of the Civil Protection in Iceland, met today to discuss the on-going unrest at the Bárðarbunga volcano.

Conclusions of the Scientific Advisory Board:
  • This morning, there was a flight over the Bárðarbunga area and the surface of the glacier was surveyed. No changes to the ice crevasses southeast of Bárðarbunga, that were seenyesterday evening, were observed. These crevasses were likely formed due to melting at the ice bottom.
  • The depressions have been located southeast of the Bárðarbunga caldera, in all likelihood within the water divide of the river Jökulsá á Fjöllum. There are three circular crevasse formations, about 5 km in total length. The ice thickness in the area is 400-600 m.
  • The water level in Grímsvötn Lake has been surveyed and has likely risen by about 5-10 m in the last days, which corresponds to an addition of 10-30 million m³ of water in the lake. A slight increase in conductivity in Köldukvísl River was measured this morning, but the cause is yet unknown. No change has been measured in the Hágöngulón lagoon, Jökulsá River and Skjálfandi River. It is assumed, that the water from the cauldron has flowed into the Grímsvötn Lake or the river Jökulsá á Fjöllum.
  • The seismic activity is similar to that of the last days. Around midnight, three earthquakes of magnitude around 4 were recorded and one of magnitude 5 at 08:13 this morning, all located within the Bárðarbunga caldera.
  • Shortly before 08:00 this morning, there was a slight increase in seismic activity in the Askja volcano. Changes in the stress field due to expansion caused by the dyke have an effect on the Askja area.
  • Since yesterday, the length of the dyke under Dyngjujökull has increased by 1-1.5 km to the north, which is considerably less than in the last days. The dyke has now reached the fissure system of the Askja volcano and GPS measurements indicate that the area there is greatly affected.
  • The conclusions from the meeting of the Scientific Advisory Board of the Icelandic Civil Protection will continue to be published at around noon, after the meeting, if necessary.
From the Icelandic Met Office:

The Aviation Colour Code remains at the ‘orange' level for Bárðarbunga.

28th August 2014 06:17 - from geoscientist on duty

Activity in the Bardarbunga area 00:00-06:00 August 28 2014.

Activity continues in similar manner as before. It was slightly less then the night before.

Two events in Bardarbunga recorded, magnitude 4.1 and 4 at 1:30 and 3:30 resp.

Most events recorded were located within the northernmost 10 km of the dike and few small
earthquakes around Askja.

Total events automatically detected from midnight until now are 400.

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Posted
  • Location: Aldborough, North Norfolk
  • Location: Aldborough, North Norfolk

http://www.ruv.is/frett/sprungur-i-holuhrauni-a-myndbandi

Sorry if already posted but that video is quite an eye opener

Shame there's no idea of scale.  They aren't small as they are taken from a plane.

 

The suns shadow on the slip looks impressive at about 1:18 into the video

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Posted
  • Location: Aldborough, North Norfolk
  • Location: Aldborough, North Norfolk

As you say it would help re scale

But i reckon these cracks are pretty big

Yes, I agree, I suppose it's also important to see how deep they go

 

In the meantime the water is going somewhere and we wait.....

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Posted
  • Location: Surrey and SW France.
  • Location: Surrey and SW France.

http://www.ruv.is/frett/an-eruption-possible-in-holuhraun-lava

Interesting

Maybe dust storms were something else

 

This area is well known for dust plumes - a combination of geological and meteorological processes at work. Page 13 in this document pictures very similar to what we have seen on camera. I would wonder if there is now an added component of heat from the ground causing additional thermal rising.

 

http://landbunadur.is/landbunadur/wglbhi.nsf/Attachment/Olafur%20Arnalds%202010%20IAS/$file/Olafur%20Arnalds%202010%20IAS.pdf

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Posted
  • Location: Hoyland,barnsley,south yorkshire(134m asl)
  • Weather Preferences: severe storms,snow wind and ice
  • Location: Hoyland,barnsley,south yorkshire(134m asl)

We have some flaring magma in the valley

 

 

http://www.livefromiceland.is/webcams/bardarbunga

 

http://baering.github.io/

 

Jón Frímann mentioned something could happen in the next few hours,how right he was.

 

 

 


is it car headlights or magma??

That is not car headlights,look at the flare off it(smudgy to the top right)


Jon Firmann says yes, eruption on dyke.

Edited by Allseasons-si
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Posted
  • Location: Whaley Bridge - Peak District
  • Location: Whaley Bridge - Peak District

Definitely a lava fountain, seems the dyke has found a weakness to the surface and only time will tell if it manages to fissure. The diffuse 'glow' gives away the source as being a eruption other than a consistent light source such as headlights or artifical light, bearing in mind the cam is some 25+ miles away from the Baroarbunga caldera itself.

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Posted
  • Location: Hoyland,barnsley,south yorkshire(134m asl)
  • Weather Preferences: severe storms,snow wind and ice
  • Location: Hoyland,barnsley,south yorkshire(134m asl)

Are we looking at a Krafla fires eruption,it looks that way to me,just a hunch from the latest.

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Posted
  • Location: Hoyland,barnsley,south yorkshire(134m asl)
  • Weather Preferences: severe storms,snow wind and ice
  • Location: Hoyland,barnsley,south yorkshire(134m asl)

http://volcams.malinpebbles.com/pubweb/Iceland.htm

 

look at the night time cam on BÃRÃARBUNGA 2,there is smoke coming from that bright echo,also there is some small flames either side of it.

 

also loads of EQ's +2's recently

Edited by Allseasons-si
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Posted
  • Location: East Devon
  • Location: East Devon

Well there we have it.

Did notice a M3.1 quake only about 1-2km depth along with some other 2+ ones in the evening so maybe that was related.

 

 

Edit: confirmed at the top of the Icelandic Met Office website: http://en.vedur.is/earthquakes-and-volcanism/articles/nr/2947

Edited by Evening thunder
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Posted
  • Location: @scotlandwx
  • Weather Preferences: Crystal Clear High Pressure & Blue Skies
  • Location: @scotlandwx

Bara 1 cam the glow is getting stronger, whilst in IR the Bara 2 cam is impressive - ashcloud visible.

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Posted
  • Location: Hoyland,barnsley,south yorkshire(134m asl)
  • Weather Preferences: severe storms,snow wind and ice
  • Location: Hoyland,barnsley,south yorkshire(134m asl)

Bara 1 cam the glow is getting stronger, whilst in IR the Bara 2 cam is impressive - ashcloud visible.

Yes,and the BÃRÃARBUNGA 2 cam is stuck on it.

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