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Bárðarbunga and Askja - Volcanic Activity

lorenzo

By lorenzo
in Space, Science & nature

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BrickFielder Rising Star

BrickFielder

Posted
  • Location: Coventry,Warwickshire
  • Location: Coventry,Warwickshire
Posted

Latest from the scientific advisory board.

 

Seismic activity in Tungnafellsjokull glacier had decreased but activity in Bardarbunga is still strong.

 

http://en.vedur.is/media/jar/Factsheet_Bardarbunga_20141020.pdf

 

From the geoscientist on duty

 

During the last 24 hours around 70 earthquakes have been detected around the Bárðarbunga caldera rim, the strongest was magnitude 5.3 at 08:36 this morning on the northern rim. The event was preceded by a magnitude 4.7 in the same area just two minutes before.

 

http://en.vedur.is/earthquakes-and-volcanism/articles/nr/2947

 

Not sure whether the time proximity there is important, although it was noticed.

 

Jon Frimann posted an interesting link on his blog today

 

Jon's Blog

http://www.jonfr.com/volcano/?p=5171

 

Interesting Link

http://www.os.is/gogn/unu-gtp-sc/UNU-GTP-SC-10-1103.pdf

 

This is a paper talking about one of the volcanoes to the south west of Bárðarbunga along the rift zone. I think it has some interesting possible insights into the what is happening at Bárðarbunga.

Some Quotes

 

High frequency earthquakes (due to fracturing) occur in the western part of the caldera down to 5 km depth. They are interpreted as being due to a water front encroaching upon and cooling an intrusive body or a magma chamber.

 The gravity high is interpreted as a heavy rock mass in the roots of the caldera, i.e. basic intrusions which were emplaced at the neutral buoyancy level underneath the lighter rhyolite and basic residuals of crystal fractionation or partially melted crustal material.

This went on during development of the volcano and a thick plug of gabbroic rock formed in the roots of the volcano. It may have developed into a stem-like rock body thus causing the gravity high.

 

 

Worth a read even if you think each individual volcano is different (probably true).

 

Subsidence seems to have stalled a little bit at the caldera and while this might be significant it has happened before. It may be that the trend will continue given a little time.

 

There looks to be a little bit of an anomaly on the HAFS monitoring SIL at the moment which could be weather related but could be worth keeping an eye on.

 

http://jardvis.hi.is/gps_timaradir_vid_bardarbungu

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john pike Maestro

john pike

Posted
  • Location: west croydon (near lombard)
  • Location: west croydon (near lombard)
Posted

kre.gif


Tuesday
21.10.2014 19:52:41 64.689 -17.490 10.1 km 3.5 99.0 5.7 km NNE of Bárðarbunga Tuesday
21.10.2014 19:50:33 64.673 -17.464 2.6 km 4.3 99.0 4.7 km NE of Bárðarbunga

http://en.vedur.is/earthquakes-and-volcanism/earthquakes/vatnajokull/#view=table

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Midlands Ice Age Maestro

Midlands Ice Age

Posted
  • Location: Solihull, West Midlands. - 131 m asl
  • Weather Preferences: Sun, Snow and Storms
  • Location: Solihull, West Midlands. - 131 m asl
Posted

Morning Barbadarians

 

Looked at overnight charts..

 

Nothing too much changing. Seems to be a trend of minor eq's at shallow levels, but there seems to be a trend to more still smallish eq's at deeper levels (9 - 15Kilmtrs).

 

Also strange is what appears to be 2 quakes between 05 and 06:00. One (the smaller) has made it to the charts at mag2.7, but the larger (looks at over m5,) has not. Perhaps it was weather related!

 

MIA  

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john pike Maestro

john pike

Posted
  • Location: west croydon (near lombard)
  • Location: west croydon (near lombard)
Posted (edited)

http://en.vedur.is/earthquakes-and-volcanism/earthquakes/#view=table

 

hi midland

 

when these show 99 they have been checked

 

the earlier bigger quake hasnt been yet

 

looks like a 5 or maybe a tad more

 

von.png

Edited by john pike
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john pike Maestro

john pike

Posted
  • Location: west croydon (near lombard)
  • Location: west croydon (near lombard)
Posted (edited)

Wednesday
22.10.2014 05:24:24 64.670 -17.508 7.8 km 4.5 99.0 3.4 km NNE of Bárðarbunga Wednesday
22.10.2014 03:33:28 64.673 -17.478 3.8 km 4.2 99.0 4.3 km NNE of Bárðarbunga

thats the update

 

thought that second quake looked bigger

 

Wednesday
22.10.2014 05:24:24 64.670 -17.508 7.8 km 4.8 99.0 3.4 km NNE of Bárðarbunga

amended to 4.8 now

Edited by john pike
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Allseasons-Si Maestro

Allseasons-Si

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

Morning bardabarians :D

 

getting a bit busy now

 

Wednesday
22.10.2014 09:11:49 64.681 -17.492 6.3 km 4.9 99.0 4.8 km NNE of Bárðarbunga

Wednesday
22.10.2014 09:07:57 64.679 -17.448 3.4 km 3.9 99.0 5.7 km NE of Bárðarbunga

 

post-16960-0-97058800-1413972015_thumb.ppost-16960-0-53692300-1413972163_thumb.g

 

poss a couple more coming in,http://baering.github.io/

 

post-16960-0-40282900-1413972083_thumb.g

Edited by Allseasons-si
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john pike Maestro

john pike

Posted
  • Location: west croydon (near lombard)
  • Location: west croydon (near lombard)
Posted

Wednesday

22.10.2014 14:00:33 64.671 -17.467 8.0 km 3.9 99.0 4.5 km NE of Bárðarbunga Wednesday

22.10.2014 13:32:56 64.679 -17.421 8.8 km 3.8 99.0 6.6 km NE of Bárðarbunga Wednesday

22.10.2014 13:30:50 64.675 -17.497 7.4 km 3.9 99.0 4.1 km NNE of Bárðarbunga Wednesday

22.10.2014 13:23:02 64.671 -17.415 8.4 km 4.4 99.0 6.4 km ENE of Bárðarbunga Wednesday

22.10.2014 13:21:31 64.678 -17.490 4.7 km 4.8 99.0 4.5 km NNE of Bárðarbunga Wednesday

22.10.2014 11:46:08 64.677 -17.423 8.4 km 3.7 99.0 6.4 km NE of Bárðarbunga

 

http://en.vedur.is/earthquakes-and-volcanism/earthquakes/#view=table

 

after allseasons post

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john pike Maestro

john pike

Posted
  • Location: west croydon (near lombard)
  • Location: west croydon (near lombard)
Posted (edited)

http://icelandreview.com/news/2014/10/22/new-video-lava-covers-two-thirds-manhattan      click link for video

 

New Video, Lava Covers Two Thirds of Manhattan By Eygló Svala Arnarsdóttir October 22, 2014 09:25 Updated: October 22, 2014 09:25

eruption_aerial_video_omar_ragnarsson_sc

A screenshot from the video. Photo: Ómar Ragnarsson/RÚV.

Journalist and environmentalist Ómar Ragnarsson flew over Holuhraun last week and shot a new video of the eruption site, published on ruv.is. The video shows the expanse of the new lava field, which now covers 60.7 km2 (23.4 square miles).

Had the eruption occurred in New York City, the lava would now cover more than two thirds of Manhattan, which is 87.5 km2, or two thirds of the Danish capital Copenhagen, which is approximately the same size.

The footage also shows close-ups of the bubbling craters, a red-hot river of molten lava and the steam created when lava flows into glacial river Jökulsá á Fjöllum, which keeps retreating.

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Allseasons-Si Maestro

Allseasons-Si

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

Evening Barda chaps :D

 

blimey she's bangin today,some EQ's within the hour

 

Wednesday
22.10.2014 21:09:30 64.681 -17.457 7.3 km 4.0 99.0 5.7 km NE of Bárðarbunga

Wednesday
22.10.2014 21:08:36 64.666 -17.390 4.0 km 3.6 99.0 7.1 km ENE of Bárðarbunga

Wednesday
22.10.2014 21:03:54 64.689 -17.448 10.2 km 3.6 99.0 6.6 km NE of Bárðarbunga

 

just read about the bridge too,they need to build it fast i would say!,i meen,the floods could happen at anytime,will they build it after the floods?

 

jon friman saying that the eruption @ Holuhraun slowly coming to an end on his latest blog

 

http://www.jonfr.com/volcano/

 

yay,i see lava

 

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

http://www.livefromiceland.is/webcams/bardarbunga-2/

 

interestingly,the last few small EQ's(unchecked) have happened NE of askja,plus there was a 2.4 EQ checked there an hour ago and a 3 EQ  checked there too six hours ago.

 

http://baering.github.io/

 

now would we see a new eruption site there!

Edited by Allseasons-si
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jonboy Seasoned

jonboy

Posted
  • Location: York
  • Weather Preferences: Long warm summer evenings. Cold frosty sunny winter days.
  • Location: York
Posted

Thursday

23.10.2014 07:58:35 64.669 -17.394 8.4 km 3.6 99.0 7.1 km ENE of Bárðarbunga

Thursday

23.10.2014 07:55:01 64.684 -17.433 7.2 km 3.7 99.0 6.6 km NE of Bárðarbunga

Thursday

23.10.2014 06:44:00 64.684 -17.398 8.0 km 3.8 99.0 7.9 km NE of Bárðarbunga

Thursday

23.10.2014 06:42:35 64.677 -17.471 8.6 km 3.9 99.0 4.9 km NNE of Bárðarbunga

Thursday

23.10.2014 06:26:59 64.683 -17.475 8.6 km 4.3 99.0 5.4 km NNE of Bárðarbunga

Active this morning and a nice rise on the displacement GPS ongoing here

http://en.vedur.is/earthquakes-and-volcanism/gps-measurements/bardarbunga/caldera/

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jonboy Seasoned

jonboy

Posted
  • Location: York
  • Weather Preferences: Long warm summer evenings. Cold frosty sunny winter days.
  • Location: York
Posted

Thursday

23.10.2014 09:52:21 64.679 -17.473 9.0 km 3.8 99.0 5.1 km NNE of Bárðarbunga

Thursday

23.10.2014 09:50:37 64.677 -17.409 12.6 km 3.9 99.0 7.0 km NE of Bárðarbunga

Thursday

23.10.2014 09:48:43 64.685 -17.446 10.1 km 4.5 99.0 6.3 km NE of Bárðarbunga

Thursday

23.10.2014 09:48:18 64.680 -17.420 9.2 km 3.8 99.0 6.7 km NE of Bárðarbunga

and a few more over a very short time period almost looks like a ripple effect

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SteveB Veteran

SteveB

Posted
  • Location: Weston-S-Mare North Somerset
  • Weather Preferences: Hot sunny , cold and snowy, thunderstorms
  • Location: Weston-S-Mare North Somerset
Posted

Wonder why the bigger quakes are now at a depth around  8-10km?

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jonboy Seasoned

jonboy

Posted
  • Location: York
  • Weather Preferences: Long warm summer evenings. Cold frosty sunny winter days.
  • Location: York
Posted

Wonder if this will have a ripple effect this afternoon

Thursday

23.10.2014 13:07:07 64.604 -17.436 9.9 km 4.8 99.0 5.9 km SE of Bárðarbunga

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jonboy Seasoned

jonboy

Posted
  • Location: York
  • Weather Preferences: Long warm summer evenings. Cold frosty sunny winter days.
  • Location: York
Posted (edited)

Thursday

23.10.2014 13:44:11 64.673 -17.466 8.0 km 3.9 99.0 4.6 km NE of Bárðarbunga

and two more

Thursday

23.10.2014 14:39:01 64.656 -17.386 1.7 km 3.7 99.0 7.0 km ENE of Bárðarbunga

Thursday

23.10.2014 14:31:18 64.677 -17.420 9.0 km 3.7 99.0 6.6 km NE of Bárðarbunga

Edited by jonboy
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john pike Maestro

john pike

Posted
  • Location: west croydon (near lombard)
  • Location: west croydon (near lombard)
Posted (edited)

thursday
23.10.2014 16:26:48 64.663 -17.409 8.4 km 4.1 99.0 6.2 km ENE of Bárðarbunga Thursday
23.10.2014 16:22:22 64.670 -17.471 8.3 km 4.2 99.0 4.3 km NE of Bárðarbunga

 

http://en.vedur.is/earthquakes-and-volcanism/earthquakes/#view=table

 

141023_1710.png

Edited by john pike
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john pike Maestro

john pike

Posted
  • Location: west croydon (near lombard)
  • Location: west croydon (near lombard)
Posted

Thursday

23.10.2014 17:26:15 64.666 -17.402 5.0 km 3.7 99.0 6.6 km ENE of Bárðarbunga Thursday

23.10.2014 17:22:34 64.608 -17.510 7.7 km 4.0 99.0 3.6 km SSE of Bárðarbunga

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