[ACTUEEL] Vulkanen IJsland #20: Uitbarsting Bardarbunga

twitter:

uni_iceland twitterde op woensdag 01-10-2014 om 16:14:01 New #Holuhraun lava field was ~48.2 km2 yesterday. No signs of any decrease in activity. #Bardarbunga still shaking http://t.co/GMxtEkXfqV reageer retweet

twitter:

volcan01010 twitterde op woensdag 01-10-2014 om 15:04:42 #Bardarbunga Science board: http://t.co/qzQjc2LDy2 Eruption and subsidence still going. V high SO2 (5800 micrograms/m3) in Mývatn, 90km N. reageer retweet

twitter:

IcelandNatural twitterde op donderdag 02-10-2014 om 21:17:03 A double treat for #Iceland visitors - the #Aurora and #Bardarbunga in one! http://t.co/oSALKHIWud http://t.co/yICkvH0hxr reageer retweet

quote:

Op dinsdag 7 oktober 2014 00:44 schreef braddofiel het volgende:
Als dit zo door blijft gaan, waar zou het dan toe kunnen leiden?

twitter:

volcan01010 twitterde op dinsdag 07-10-2014 om 15:14:00 #Holuhraun area now 52.3km2 in 34 days => ~1.5km2/day => ~one football (soccer) pitch every 7 minutes! #Bardarbunga http://t.co/TunFjsjXic reageer retweet

twitter:

eruptionchaser twitterde op woensdag 08-10-2014 om 13:03:33 @eruptionsblog @subglacial I see a distinct trend: it's no straight line; deceleration since day 1: http://t.co/ase170lJmP reageer retweet

twitter:

eruptionchaser twitterde op woensdag 08-10-2014 om 13:03:33 @eruptionsblog @subglacial I see a distinct trend: it's no straight line; deceleration since day 1: http://t.co/ase170lJmP reageer retweet

twitter:

subglacial twitterde op woensdag 08-10-2014 om 14:46:13 @eruptionchaser @eruptionsblog Hi Mike. Interesting! I see near-linear 23 Sep till now, and slight deceleration from start till 23 Sep. reageer retweet

twitter:

subglacial twitterde op woensdag 08-10-2014 om 15:17:50 If you are wondering why the #Bárðarbunga caldera collapse appears so regular on the graphs shown at http://t.co/82vnbwtrM5, consider 1/2 reageer retweet

twitter:

subglacial twitterde op woensdag 08-10-2014 om 15:20:20 2/2 ...that the GPS station is actually measuring ice movement. And that this is 'buffered' by ductile deformation of a huge mass of ice. reageer retweet

twitter:

subglacial twitterde op woensdag 08-10-2014 om 15:36:04 A 1 km2 #Bárðarbunga caldera block suddenly dropping 1 m would be registered a few days later as 'background' subsidence by ice-surface GPS. reageer retweet

twitter:

alexwitze twitterde op woensdag 08-10-2014 om 14:43:49 Thordarson proposes naming the new #Holuhraun lava field "Nornahraun," the witches' lava http://t.co/u1eNNBow64 HT @subglacial reageer retweet

quote:

Op donderdag 9 oktober 2014 10:20 schreef Frutsel het volgende:
4.7 vanochtend nog

quote:

Thursday
09.10.2014 04:37:16 64.676 -17.467 0.1 km 5.0 99.0 4.9 km NE of Bárðarbunga
Wednesday
08.10.2014 18:48:58 64.671 -17.451 0.1 km 4.6 99.0 5.0 km NE of Bárðarbunga
Wednesday
08.10.2014 18:11:12 64.665 -17.410 2.6 km 3.0 99.0 6.2 km ENE of Bárðarbunga
Wednesday
08.10.2014 15:24:14 64.680 -17.491 5.1 km 5.2 99.0 4.7 km NNE of Bárðarbunga
Wednesday
08.10.2014 15:17:51 64.674 -17.487 3.2 km 3.9 99.0 4.2 km NNE of Bárðarbunga
Wednesday
08.10.2014 04:38:32 64.677 -17.455 5.8 km 3.9 99.0 5.3 km NE of Bárðarbunga
Wednesday
08.10.2014 04:37:47 64.689 -17.434 6.3 km 3.2 99.0 7.0 km NE of Bárðarbunga

twitter:

TapasDeCiencia twitterde op donderdag 02-10-2014 om 13:55:54 Bello amanecer en el campo de lava Holuhraun, en las Tierras Altas de Islandia. Foto de Erez Marom. http://t.co/YwEBZTMqHe reageer retweet

twitter:

uni_iceland twitterde op donderdag 09-10-2014 om 12:13:52 Map of new #Holuhraun lava field shows it's ~55 km2 by now. Rough estimate of volume ~0.77 km3 #Bardarbunga http://t.co/C2sZv5aKlK reageer retweet

twitter:

jonfr500 twitterde op zondag 12-10-2014 om 03:25:38 I suspect that an eruption has started under the glacier in Bárðarbunga volcano. reageer retweet

twitter:

alexwitze twitterde op zondag 12-10-2014 om 14:17:18 #Holuhraun helicopter video from Friday shows how eruptive fissure is more a lava lake than fire fountains now http://t.co/GKiHUgPBjL reageer retweet

quote:

12 October 2014 10:00 - from geoscientist on duty

The eruption: Webcameras show no significant changes in the eruption.

Earthquakes: Since 10:00 UTC yesterday (Saturday) two quakes over magnitude 5 occurred in Bárðarbunga. The first one M5.0 at 11:30 yesterday and M5.2 at 08:43 this morning. Both originated in the northern rim of the Bárðarbunga caldera. Additionally, four quakes over magnitude 4 were registered: Yesterday M4.7 at 19:33, M4.1 at 01:36 last night, M4.0 at 03:57 and M4.2 at 06:20. Over 100 quakes have been registered during past 24 hours in the caldera and about 25 in the northern part of the intrusion.

Gas pollution: Northeasterly winds are expected today (Sunday), so the pollution is expected towards south and southwest from the eruption. Polluted area is bounded by Faxaflói in the west and Mýrdalur in the east and is expected to extend north of Hofsjökull. Tomorrow (Monday) wind will be southerly and the pollution will go north.
The Icelandic Met Office provides two-day forecasts on gas dispersion from the eruptive site in Holuhraun. Most reliable are the forecast maps approved by meteorologist on duty. And although still being developed further, an automatic forecast (trial run, see disclaimer) is also available.

11 October 2014 10:00 - from geoscientist on duty

From now on a change is made in these reports from a geoscientist on duty, and they will be published daily at about 10:00 UTC. This may be changed if the eruption changes significantly.

The eruption continues with the same lava flow rate as in past weeks.

Seismicity is similar to previous days:
- There is low activity in the dyke intrusion. Around 20 earthquakes have occurred during the last 24 hours, all within magnitude 1.5 and in the northern part of the intrusion between the eruption site and to the south some kilometers under Dyngjujökull glacier.
- About 80 earthquakes were detected on the caldera rim of Bárðarbunga. The largest earthquakes were at 11:26 and 23:51 yesterday, both of magnitude 4.8. Earthquakes of magnitude 4.7 and 4.5 also occurred and seven between 3.0 and 3.9. Most activity was on the northern caldera rim.

Displacements (no significant changes):
- Minor movements of GPS stations in the area.
- Subsidence of the caldera continuing at similar rate.

Water monitoring: No changes.

Gas forecast (latest forecast 09:32 UTC): Today (Saturday) and tomorrow (Sunday): Northeasterly winds are expected with the possibility of gas pollution south and southwest of the eruption site in an area from Hellisheiði in the west to Hornafjörður in the east.

The Icelandic Met Office provides two-day forecasts on gas dispersion from the eruptive site in Holuhraun. Most reliable are the forecast maps approved by meteorologist on duty. And although still being developed further, an automatic forecast (trial run, see disclaimer) is also available.
10 October 2014 19:00 - from geoscientist on duty

Since midnight, no earthquakes above M5 have been detected in the caldera. The largest occurred during the night (4.7 in size) and half an hour before noon, M4.8. Quite a number of smaller quakes has been detected at the caldera (almost 60 since midnight, the majority at the northern rims). Also in the dike (about 20), from the eruptive site and to about 10 km within the Dyngjujökull margin.

An observation from a surveillance flight with TF-SIF today, revealed great blue mist and gas from the eruptive site to about 3 km height above the crater. From there, it is carried across the South Iceland lowland and across West Iceland as far as could be seen from the aircraft. The pollution seems to be greatest just west of Eyjafjallajökull but is also considerable towards Mýrdalssandur.

twitter:

volcan01010 twitterde op maandag 13-10-2014 om 14:08:41 #Bardarbunga Science board: http://t.co/6lA0NQ2wVw Caldera GPS offline: repair on way. 2 M5.2 EQs at wkend. #Holuhraun STILL same rate. reageer retweet

twitter:

jonfr500 twitterde op dinsdag 14-10-2014 om 01:43:39 @BerryTh No. A relay transmitter ran out of power. So no data could be transmitted from the GPS station on top of Bárðarbunga volcano. reageer retweet

twitter:

volcan01010 twitterde op dinsdag 14-10-2014 om 16:05:41 Car for scale shows #Holuhraun flow thickness (>8 m). See also sandstorms, fire fountains, lava in river, Me: 2:40. http://t.co/PMVC9XeKKj reageer retweet

twitter:

volcan01010 twitterde op woensdag 15-10-2014 om 14:38:10 #Bardarbunga Science board: http://t.co/xVz3Q0IsYM Caldera GPS fixed, subsiding 30-40cm/day, subsided vol: 0.75km3. #Holuhraun still going. reageer retweet

twitter:

Sim0nRedfern twitterde op woensdag 15-10-2014 om 20:58:32 M5.4 #Bardarbunga caldera quake & 20cm collapse: #Holuhraun eruption still strong 2 months after dyke first started http://t.co/TfY80eX4Jj reageer retweet

twitter:

Bardarbunga twitterde op donderdag 16-10-2014 om 10:43:21 So? What's up? Been hungover for a couple of days. Too much hot&sweet last weekend. #rimshot #Bardarbunga #ashtag reageer retweet

quote:

16 October 2014 10:00 - from geoscientist on duty

During the last 24 hours, about 70 earthquakes have been detected at Bárðarbunga and a dozen in the northern part of the dike. This is somewhat less activity than 24 hours earlier. Two quakes over five in magnitude occurred at the northern caldera rim; an M5.4 at 11:16 yesterday and an M5.0 in the early hours of the morning, at 03:14 today. One earthquake M4.2 occurred later this morning, at 09:25, in a similar location.

Observations of deep thudding sounds were received yesterday while the large earthquake occurred, possibly as a consequence thereof. Scientist went to Askja yesterday but found no signs of a rockfall, which could have caused the noises. Possibly the sounds were from jet aircrafts, passing at the same time.

twitter:

eruptionchaser twitterde op vrijdag 17-10-2014 om 04:21:42 @eruptionsblog @subglacial Interesting. 16.11 event today only 4.6 but biggest spike on DYN tremor plot since August: http://t.co/NPs5oACuM3 reageer retweet

twitter:

jonfr500 twitterde op vrijdag 17-10-2014 om 02:09:35 @eruptionsblog New video of the Holuhraun eruption. Showing lava rivers and such things. http://t.co/cCI0zXbosl reageer retweet

twitter:

gislio twitterde op vrijdag 17-10-2014 om 13:56:24 Restricted closed area around #Holuhraun has been made smaller - a danger area still same. #Bardarbunga http://t.co/7pANl05qze reageer retweet

twitter:

eruptionchaser twitterde op vrijdag 17-10-2014 om 14:39:53 @eruptionsblog @subglacial Heightened risk at #Bárðarbunga danger area extended: https://t.co/rrAwU923ar reageer retweet

twitter:

eruptionchaser twitterde op vrijdag 17-10-2014 om 15:06:31 Whatever is happening at #Bárðarbunga , it's a lot stronger on VON than DYN: http://t.co/IzWLJEoIpW reageer retweet

twitter:

mblfrettir twitterde op vrijdag 17-10-2014 om 15:39:53 Holuhraun is still creating beautiful rivers of lava - http://t.co/svGTf4jKzQ reageer retweet

quote:

The erup­tion in Holuhraun has sub­sided some­what. Pol­lu­tion from poi­son gases is now the largest prob­lem aris­ing from the erup­tion. There is still con­sid­er­able seis­mic ac­tiv­ity in the Bar­dar­bunga crater, with quakes com­ing at fre­quent in­ter­vals and end­ing in a large quake.

twitter:

jonfr500 twitterde op vrijdag 17-10-2014 om 18:27:27 It is my opinion that there is now a higher risk of eruption in Tungnafellsjökull volcano. http://t.co/iIXBWde1qs reageer retweet

quote:

Op zondag 19 oktober 2014 16:53 schreef aloa het volgende:

[..]

vandaag weer eentje op 100 meter diep (5.0)

quote:

Op zondag 19 oktober 2014 20:23 schreef Resistor het volgende:
Je zou denken dat de caldera in aan het storten is.

Zijn er nou geen recente plaatjes van de ijskap?

twitter:

volcan01010 twitterde op woensdag 22-10-2014 om 14:41:49 #Bardarbunga Science board: http://t.co/xVz3Q0IsYM Still subsiding. 10 EQs > M4 in last 2 days. #Holuhraun lava runs 'with great force'. reageer retweet

quote:

• Scientists in Holuhraun confirm that the volcanic eruption continues with similar intensity as last few days. The lava river runs from the northern end of the crater to the east with great force.
• Seismic activity in Tungnafellsjokull glacier had decreased but activity in Bardarbunga continues to be strong. At 8:36 Tuesday morning an M5,3 earthquake was measured in northern Bardarbunga. Over the last two days ten other earthquakes bigger then M4,0 were recorded in Bardarbunga and in total 31 earthquakes bigger then M3,0.
• Smaller earthquakes are measured in the dyke, most of them are in the area north of Dyngjujokull leading to the eruption site in Holuhraun.
• The GPS station in the centre of Bardarbunga show that the subsidence of the caldera continues with similar rate as before.
• GPS measurements show minor movements. No great changes were detected.
• No change was detected in water monitoring that cannot be explained by changing weather.

Holuhraun BSF

twitter:

uni_iceland twitterde op donderdag 23-10-2014 om 12:04:12 EO-1 ALI satellite image from NASA & USGS of the lava on October 21st. White line shows lava extent http://t.co/EywUYzR2ZB reageer retweet

twitter:

gislio twitterde op zaterdag 25-10-2014 om 12:49:05 Spectacular picture of #Holuhraun #eruption from @NatGeo http://t.co/TB94hpBqHE http://t.co/ZUE44HaQUm reageer retweet

quote:

During the past 48 hours total (when this is written) of 69 earthquakes with magnitude of larger than 3,0 have happened in Bárðarbunga volcano. Total number of earthquakes in that same time period is 286 earthquakes (when this is written). Since yesterday it appears that earthquake activity is increasing in Bárðarbunga volcano at the moment, there is minor fluctuation in activity every few hours. I do not know why that is happening.

twitter:

uni_iceland twitterde op vrijdag 24-10-2014 om 11:39:02 Map of #Holuhraun, or maybe we should use #Nornahraun. It keeps growing and covers just over 63 km2 #Bardarbunga http://t.co/gbnUowZS0P reageer retweet

twitter:

eruptionchaser twitterde op zaterdag 25-10-2014 om 14:00:11 @eruptionsblog @subglacial for any concerned by quake logs, IMO clearly go off shift at midnight and on shift at 9am! http://t.co/Q5O4zh6t3W reageer retweet

twitter:

uni_iceland twitterde op maandag 27-10-2014 om 10:57:23 Eruption glow & #auroras taken NE of the eruption Oct 21 Credit Ronni Grapenthin #Bardarbunga #Nornahraun #Iceland http://t.co/S6AjpdsxQP reageer retweet

twitter:

lava_ice twitterde op dinsdag 28-10-2014 om 01:42:45 #bardarbunga heat flow is thought to be increasing; caldron in SE part of ice is deepening according to latest report http://t.co/Y2Jaoz3uie reageer retweet

quote:

Subsidence of the caldera happens without any earthquake activity most of the time. According to Icelandic Met Office and others (pdf file here), the caldera has now dropped some 40 meters. New cauldrons have been forming along the caldera rim and older ones (that I did not know about until today) have been getting deeper according to measurements from Friday (24-October-2014). The new and older cauldrons appear clearly on images that can be found here (text is in Icelandic). GPS data is showing minor inflation in the dyke that is currently erupting, suggesting that more magma is flowing into it then is erupting from it.

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 Þórdís Högnadóttir http://t.co/NZFrRN2cp8 reageer retweet

quote:

Op dinsdag 28 oktober 2014 13:58 schreef GekkePoes het volgende:
http://www.livefromiceland.is/webcams/bardarbunga-2/

Heeft die camera het te warm gekregen?

[ afbeelding ]

twitter:

IcelandInUS twitterde op dinsdag 28-10-2014 om 13:16:39 #nature can make you feel VERY small @mblfrettir pic of @LandRoverUSA @LandRover at #Holuhraun http://t.co/b8dBj6Ui8o http://t.co/voDYcVnNzf reageer retweet

twitter:

alexwitze twitterde op dinsdag 28-10-2014 om 16:35:04 "We don't see an end in sight" -- #Holuhraun eruption could last for months or years. By me http://t.co/RfC7t6RyKD reageer retweet

twitter:

alexwitze twitterde op dinsdag 28-10-2014 om 16:37:57 Icelanders are calling the sulfur #Holuhraun haze the Mist. As they did in the 1783-84 Laki eruption. http://t.co/3vMvR4faas #Bardarbunga reageer retweet