A fissure eruption has started north of Dynjujökull, seen in the photo. A live YouTube stream is available below
Authorities in Iceland say the fissure is ~10 km north of Vatnajökull and currently measures about 100 meters long. The eruption started shortly after midnight on August 29 in Iceland, however the eruption seems to be subsiding in recent hours.
Another webcam view.
Mynd úr vefmyndavél Mílu.
Live YouTube stream:
https://www.youtube.com/watch?v=xoISDUAPNgc
Earthquakes:
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Early this morning:
http://www.mbl.is/tncache/frimg/dimg_cache/e392x262/7/61/761734.jpg
A second fissure eruption started in an ice-free area north of Bardarbunga, early Sunday morning. The eruption is located at the same site as an eruption Friday morning, which lasted only a few hours.
The Icelandic Met Office has issued a red alert for aviation, restricting flight around the eruption site.
The eruption seems to have started near the northern end of the magma intrusion that has been propagating northward from the Bardarbunga caldera since August 16.
RUV.08.2014 06:41, Updatet: 31.08.2014 07:33 GMT
This is from a webcam:
http://www.ruv.is/files/imagecache/frmynd-stor-624×351/myndir/untitled_69_0.png
Twitter: https://twitter.com/RUVfrettir
Up to 60 meter high lava fountains
http://www.ruv.is/frett/up-to-60-meter-high-lava-fountains
http://www.ruv.is/files/imagecache/frmynd-stor-624×351/myndir/10604441_936983699649428_3560116859039296438_o.jpg
It is visible now on the webcam. Wind caused by the hurriicane Cristobal shaking the camera.
http://www.livefromiceland.is/webcams/bardarbunga-2/
Now the lava flow rate is estimated to be about 1000 m3 per second. About 50 times more than during the short eruption on Friday.
http://www.mbl.is/frimg/7/61/761743.jpg
News report with a 30 second video attached, mostly lava advancing toward the camera
Eruption continues at full force – video
From the article: 8/31 18:37 GMT
Correction: The nested blockquote “Past 8 hrs:”, should have been normal block. They are my notes.
It’s 08-31-14, 11:52 ET….this thing is going to pop within the next 48 hours! probably less!
From a collection of photos on Facebook account Jarðvísindastofnun Háskólans
Past 24 hours:
At Bardarbunga Crater: A Mag 5.0 and 5.3, two Mag 4+s, four Mag 3+ (5-10 km depth)
At the midway rift, 1 Mag 3.0 13 hrs ago, one other above 2.4 (10-15 km deep)
At the new active zone NE of Askja: (65.15 N 16.35 W) A Mag 3.1 12 hrs ago, eight other quakes above 2.4. All are shallow, less than 5 km.
Slabby Pahoehoe lava – and lots of it140901 20:19 UTM
Fissure is about 1.8 km long. Lava covers 4.5 km^2. Flow is 7-8 m thick at the cool edge, 1 m thick where it is hottest and most liquid.
Correction to 4:04pm:
at 20:19
UTMGMT. (Or UTC. UTM is a map projection)check: if there is 30 million m3 of lava in two days, that would be an average of 174 m^3/sec.
Bardarbunga slowly sinking
The big Mag 4-5.7 quakes at the Bardarbunga crater, along with GPS measurements are signaling that the crater is collapsing into the magma chamber as the magma leaves the chamber to feed the dike intrusion.
the top of the volcano is sinking ever so slightly.”
They make no mention of the amount of sinking. But to account for 30 million m^3 of lava, even if Bardarbunga was 10 km by 10 km, it would have to shrink by 0.3 m if the volumes are to match.
Pictures:
http://photos.gudmann.is/#!/index/G0000VHvgRsUlb5M
Holuhraun lava eruption rapidly subsiding 140901 13:01 GMT.
It is late afternoon on the webcam. No red fountains are visible. Consistent with declining activity, but it could be the lighting conditions.
There are great pictures for good wind direction from Sept 1 in the link above, but it looks to me like the fissure is much shorter than yesterday.
From the http://baering.github.io/, there has been a remarkable decline in the activity from the area NE of Askja.
In the past 22 hrs
at Bardarbunga, a 4.7 and 4.3 in the past 5 hrs.. only a few small ones.
at the mid-way rift, One mag 3.1 15 hrs ago, 4 others above 2.5, and lots of small stuff.
NE of Askja, 5 between Mag 2.5 and 2.9, but all older than 12 hrs. In the past 12 hrs it is all small (biggest is 2.2) and quite scattered along the rift.
Since about 140902 14:00 GMT the earthquake rate has fallen dramatically. Look at the rug plot below the map.
http://en.vedur.is/earthquakes-and-volcanism/earthquakes/vatnajokull/
Compare these Snapshots of the 48 hour earthquake maps from:
Aug. 29 02:25 and Sept 2, 17:55
Activity is definitely in a decline phase in frequency, magnitude, and area.
The webcam http://www.livefromiceland.is/webcams/bardarbunga-2/
It is now late afternoon, and red fountains are visible from what appear to be two inline fissures.
I see that the talk is saying that an eruption in the crater of Bardarbunga is still on the list as a possibility. They just had another 4.9 mag quake about 20 minutes ago, and there were several more earlier today. Could be sooner rather then later.
This must be the best 3D visualiaztion model of the earthquakes under Bárðarbunga.
It is made by an Icelandic 24 year old programmer Bæring Gunnar Steinþórsson.
Fly from above the glacier and through the surface to see what is going on underground.
http://baering.github.io/earthquakes/visualization.html
I was looking at that last night. Although, I did not realize that you could look under the ground with it. What a great tool for understanding the movement and effects of the magma intrusion. I was just reading at RUV where they have pulled back all personnel to safer locations today.
Here is a picture of a rift valley forming from the pressures being exerted…http://www.ruv.is/frett/holuhraun-eruption-not-big-enough
Last 24 hours: 4 mag 4+ quakes (no Mag 5+) under Bardarbunga.
Only 2 Mag 2.4 quakes near the fissure, 4 bigger than 2.2.
Nothing bigger than 2.3 NE of Askja. six bigger than 2.2.
Last 8 hours: 2 Mag 4s at B
two 2.0s at the mid-way spot.
four mag 2.2-2.3 NE of Askja.
Up to 130 meter high lava fountains Sept 4 14:09 GMT.
(Full) frontal breakout of Pāhoehoe lava Sept. 4 16:33 GMT.
Front page: http://www.ruv.is/volcano
A Facebook post from Institute of Earth Sciences
·
Everything Changes When Night Falls 9/4 23:38 GMT
Has a video of night lava fountains and flows.
Last 8 hrs, things bigger than Mag. 2
Three at Bardarbunga, biggest 2.8, 30 minutes ago.
One at the mid way point, Mag 2, 9 km deep, 4 hrs ago.
One NE of Askja, Mag 2.1, 2 hrs ago shallow, 2 km.
What is new is there is a string of low mag quakes running SW of Bardarbunga.
Last 15 hrs: One Mag 5.3 at Bardarbunga, Nothing bigger than 2.3 other than that.
Between Mag 2 and 2.3:
Three at Bardarbunga, two at mid-way, four NE of Askja.
Below Mag 2, there is a pronounced “pipe”, and maybe a second one, at the midway fissure than goes to about 12 km. This had been more of a sheet in previous days, but today the quakes are stacked in a restricted pipe.
There are about 4 subareas of activity NE of Askja along the same rift.
New fissures erupting in Holuhraun 9/5 08:56 GMT
Holuhraun lava field now 16 sq. kilometres
The lava flow is a few hours now from on of the rivers that run off the glaciers. So some lava-water fireworks are in store for us.
Lava output is estimated between 100-200 cubic meters per sec, so it hasn’t changed in 5 days. The main fissure has remained steady. The small fissure that opened up Friday has diminished.
Earthquakes are way down.
Last 36 hrs, five quakes between Mag 3 and 5.4, all at Bardarbunga
Between 2.4 an 2.5: two NE of Askja, one W of Bardarbunga.
At the fissure, the midway group, the largest is 2.2 and 10km deep. Three above 2. Lots of Mag 1-2, and more scattered, maybe in three planes.