[ACTUEEL] Vulkanen IJsland #20: Uitbarsting Bardarbunga

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Op vrijdag 14 november 2014 15:39 schreef Frutsel het volgende:
uitstoot 60.000 ton SO2 per dag...

die heeft er zin in

twitter:

volcan01010 twitterde op vrijdag 14-11-2014 om 15:22:22 SO2 from #Holuhraun made 40% of Icelandic rain samples acidic. Lowest pH so far, 3.5, is like grapefruit juice. http://t.co/xVz3Q1046Q reageer retweet

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Op dinsdag 28 oktober 2014 12:10 schreef bwt het volgende:

twitter:

uni_iceland twitterde op dinsdag 28-10-2014 om 11:14:54 #Bardarbunga continues to subside, –40m so far. Signs of increased geothermal activity. Credit Žórdķs Högnadóttir http://t.co/NZFrRN2cp8 reageer retweet

[ afbeelding ]

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Op maandag 3 november 2014 12:19 schreef bwt het volgende:
Bevingen blijven onverminderd doorgaan

twitter:

eruptionchaser twitterde op maandag 03-11-2014 om 07:15:18 @subglacial Big quake... correlated this time with big GPS 'up' spike.. http://t.co/N3xwnPHhE0 reageer retweet

[ afbeelding ]
5,3 is bijgesteld naar 5,4


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twitter:

subglacial twitterde op maandag 03-11-2014 om 12:35:49 #Bįršarbunga #Holuhraun. Latest official update. Basically, everything is at a steady-state. http://t.co/lMMHhiCwwb reageer retweet

http://avd.is/en/wp-conte(...)arbunga_20141103.pdf

[..]

twitter:

subglacial twitterde op zondag 16-11-2014 om 10:21:50 #Bįršarbunga. After M5.4 EQ seismic activity dropped temporarily. More repeats could reveal subsidence mechanism(s). http://t.co/muIozr5gGb reageer retweet

twitter:

subglacial twitterde op zondag 16-11-2014 om 23:31:45 #Bįršarbunga. New map shows extent of lava field. Growth is on south side. http://t.co/muIozr5gGb http://t.co/NRG5FuYOdI reageer retweet

twitter:

uni_iceland twitterde op woensdag 12-11-2014 om 19:57:58 The coast guard flew over #Holuhraun eruption site yesterday with some of our scientists. Credit: J. Gušbjartsson http://t.co/4UplmXLz9O reageer retweet

twitter:

uni_iceland twitterde op woensdag 12-11-2014 om 19:58:44 Tech guy Žorsteinn Jónsson shovels fresh lava from #Holuhraun eruption. He practically lives up there. http://t.co/tIc3J9WOrV reageer retweet

twitter:

uni_iceland twitterde op woensdag 12-11-2014 om 20:01:52 This would be a nice place to barbecue… or maybe it's a bit too hot #Holuhraun #Bardarbunga yesterday http://t.co/RtfD3wsCLA reageer retweet

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Op maandag 17 november 2014 09:35 schreef GekkePoes het volgende:
Grillen op lavasteen . Maar geeft verse lavasteen geen rare chemische dampen af die het vlees bederven?

Het blijft trouwens gestaag doorgaan.

twitter:

uni_iceland twitterde op maandag 17-11-2014 om 10:47:03 Satellite image of new #Holuhraun yesterday. It's now roughly 73 km2 with a volume of more than 1 km3 #Bardarbunga http://t.co/mHTz5kdxoL reageer retweet

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• The volcanic eruption in Holuhraun continues with similar intensity as it has for the last two weeks. Lava continues to flow out of the lava lake in the crater to east southeast. The Lava field is now about 72 square kilometres.
• Seismic activity in Bardarbunga continues to be strong. The two biggest earthquakes that were detected since noon on Friday were both of magnitude M5,4. On Friday, 14. November at 11:25 and on Sunday, 16. November, at 01:37. In total 16 earthquakes bigger then M4,0 were detected over the period and 25 earthquakes between M3,0-3,9. In total 160 of earthquakes were detected in Bardarbunga since noon on Friday.
• About 50 smaller earthquakes were detected in the dyke and at the eruption site in Holuhraun. All of them under magnitude M1,6.
• The subsidence of the Bardarbunga caldera continues with similar rate as last few weeks. The rate of the depression in the centre of the caldera is decreasing but the flow of magma underneath the caldera is not decreasing since the depression area in the caldera continues to enlarge with the same rate as it has for the last three months.
• GPS measurements outside of Bardarbunga show that the displacement is slowing down.

twitter:

IcelandicTimes twitterde op dinsdag 18-11-2014 om 22:37:59 Ongoing volcano eruption in #Holuhraun #Iceland - credit to Daši Haršarson @nyjarviddir.is http://t.co/UOnIdJ54cX reageer retweet

twitter:

eruptionchaser twitterde op donderdag 20-11-2014 om 11:02:01 @subglacial @eruptionsblog Uh oh. M4.5 @ 7.5km right on Hekla summit ridge. Quality 99% so presume for real: http://t.co/DHRPoYYSWe reageer retweet

twitter:

eruptionchaser twitterde op donderdag 20-11-2014 om 11:06:39 @subglacial @eruptionsblog Belay that... *of course* 2 mins after I tweet, their 99% 4.5 is revised to a 99% 0.9... reageer retweet

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Notes
• The volcanic eruption in Holuhraun continues to be strong. The activity is similar as it has been for the last two weeks but the lava flow is more fluctuating. The lava flow forms an extrusion to the east southeast. From midSeptember the productivity of the eruption has decreased.
• Seismic activity in Bardarbunga continues to be strong. The biggest earthquake that was detected since noon on Wednesday, 18. November at 00:26 was of magnitude M4,6. In total 16 earthquakes bigger then M4,0 were detected over the period and 39 earthquakes between M3,0-3,9. In total 170 earthquakes were detected in Bardarbunga since noon on Wednesday.
• On Thursday, 20 November at 08:46 an earthquake of magnitude M1,9 was detected in the dyke. Three other earthquakes larger then M1,5 were detected in the dyke since Wednesday. In total 65 earthquakes were detected in the dyke over the period, which is more activity then has been detected over the past few weeks. Most of the earthquakes were detected in north end of the dyke but about 15 earthquakes, including the larger ones, were more to the south and under Vatnajokull glacier.
• The subsidence of the Bardarbunga caldera and tectonics continues with similar rate as last few weeks. Tectonicsmovements show depression towards Bardarbunga.

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report
• The volcanic eruption in Holuhraun continues to be strong. The lava flow and the gas emission in the volcanic plume is more fluctuating than it has been. There is a double pulse cycle, or fluctuation, one takes hours and the other takes between 10 and 20 seconds.
• Seismic activity in Bardarbunga continues to be strong. The biggest earthquakes that was detected since noon on Friday, were of magnitude M5,1 on Sunday, 23. November at 09:22 and this morning, 24. November, at 09:03 of magnitude M5,4. In total 36 earthquakes bigger then M4,0 were detected over the period and 56 earthquakes between M3,0-3,9. In total about 250 earthquakes were detected in Bardarbunga since noon on Friday.
• First analysis from a new seismograph, which was installed on Bardarbunga on 11. November, shows that the earthquakes in the Bardarbunga caldera originate in the uppermost three kilometres of the earth’s crust. This indicates that the magma is closer to the earth’s surface than was estimated before.
• On Saturday, 22 November, at 00:51 an earthquake of magnitude M1,7 was detected in the dyke. In total about 80 earthquakes were detected in the dyke and around the eruption site in Holuhraun since Friday.
• The subsidence of the Bardarbunga caldera and tectonics continues with similar rate as last few weeks. Tectonics movements show depression towards Bardarbunga.

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There are no major changes in the eruption in Holuhraun. From the looks on the web cameras it appears that wall of the crater has possibly collapsed, I don’t have it confirmed. Other possibility is that the eruption in Holuhraun has increased for the time being. Some lava strokes can be spotted on the north edge of the crater at the moment. The lava flow seems to have changed direction at the moment, the size of the lava field is now close to 72 km².

twitter:

subglacial twitterde op dinsdag 25-11-2014 om 10:20:50 Subsidence of #Bįršarbunga caldera. Gaps in data stream due to connection problems - likely due to icing. http://t.co/82vnbwL2U9 reageer retweet

twitter:

subglacial twitterde op dinsdag 25-11-2014 om 12:19:38 #Bįršarbunga. Unless there's a data gap, the 'pause' in M3+ EQs after the M5.4 is a long one. http://t.co/eMqFzbPn7t http://t.co/w1JZyB9aMi reageer retweet