General Volcanic Activity Thread!

[john pike]

VONA/KVERT WEEKLY INFORMATION RELEASE 34-2014
Kamchatkan and Northern Kuriles Volcanic Activity
August 21, 2014, 22:14 UTC (August 22, 2014, 10:14 KST)

 

http://www.kscnet.ru/ivs/kvert/van/

 

all info in link

[Buriedundersnow]

• Gisli Olafsson â€@gislio 32m
• A 4.6M quake being reported under #Bardarbunga. #ashta

•  
• Gisli Olafsson â€@gislio 30m
• IMO (@vedurstofan) showing it smaller (as 2.9)…time to wait for scientists to report on it #Bardarbunga

Edited August 22, 2014 by Buriedundersnow

[Buriedundersnow]

Gisli Olafsson â€@gislio 11m

It is now 3.3M according to @Vedurstofan - still 4.7M and 4.8M by @LastQuake and @USGS respectively

[john pike]

http://en.vedur.is/earthquakes-and-volcanism/earthquakes/

Yep 4,7. And 4km deep

That will shake things up a bit

[Buriedundersnow]

this was just posted on twitter an ash discharge from UBINAS in Chile from today

 

https://www.youtube.com/watch?v=RTM1G_m2ZzI

[NorthNorfolkWeather]

http://en.vedur.is/earthquakes-and-volcanism/earthquakes/Yep 4,7. And 4km deepThat will shake things up a bit

Lots of smaller quakes since that M4.7.

 

Interestingly the number of earthquakes in the last 48 hours continues to rise, now over 2100

[karyo]

Lots of smaller quakes since that M4.7.

 

Interestingly the number of earthquakes in the last 48 hours continues to rise, now over 2100

 

Some stronger earthquakes started once again (around the M3 - 3.5 mark).

 

http://en.vedur.is/earthquakes-and-volcanism/earthquakes/

 

Karyo

[john pike]

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

[john pike]

Chances of eruption increase as seismic activity drags on

News in english

kl 11:34, 22. ágúst 2014

•  

Magnús Tumi Gudmundsson. VÃSIR/BALDUR HRAFNKELL

Kristján Már Unnarsson skrifar:

The longer that the seismic activity under Bárðarbunga goes on, the greater the risk of an eruption, according to Magnús Tumi Guðmundsson, geophysicist and Professor at the University of Iceland. The authorities are acting on two key phrases: There are no signs of the magma reaching the surface, and that the seismic activity is still very powerful.

Scientists differ on how to interpret several large quakes from Thursday that originated in the center of the Bárðarbunga caldera. While some scientists claim that this means that the pressure is lowering, others claim the exact opposite.

Scientists met today at the Institution of Earth Sciences in Iceland to compare notes and try to determine the chances of an eruption.

Kristín Vogfjörð, seismologist and research director at the Icelandic Meteorological Office. VÃSIR/BALDUR HRAFNKELL

"It's still likely to end in an eruption, and those odds haven't lowered in any way," states Magnús Tumi. "The longer that this takes place, the greater the chances of something happening. But I don't think that the odds are favoring an eruption, but then again it's all guesswork," he adds.

Scientists believe they have a rough idea about what's been happening under Vatnajökull glacier for the past week, that magma is flowing from under the Bárðarbunga caldera to the northeast towards Dyngjujökull glacier, where the magma is forming a 25 kilometer long underground cavern at a depth of 5 to 10 kilometers. Looking at the 3D model that the The Icelandic Meteorological Office has constructed of the seismic events, one can see the cavern's location.

Ingi Þorleifur Bjarnason seismologist and geophysicist at the Institution of Earth Sciences. VÃSIR/BALDUR HRAFNKELL

Scientists disagree on how to interpret large quakes that took place in the Bárðarbunga caldera last night and this morning.

Kristín Vogfjörð, research director for the Icelandic Meteorological Office, claims that according to GPS data the pressure in the caldera is lowering.

 

But Ingi Þorleifur Bjarnason, seismologist and geophysicist at the Institution of Earth Sciences, interprets the quakes differently: That the pressure is increasing and the mountain is rising, more magma is entering the caldera.

 

i reckon no-one really knows what happens next

 

Edited August 22, 2014 by john pike

[karyo]

The activity appears to have dropped now with only minor earthquakes (less than M2) but it could be temporary.

 

http://en.vedur.is/earthquakes-and-volcanism/earthquakes/

 

Karyo

[Gael_Force]

Not at all. Big one very recently.

 

http://hraun.vedur.is/ja/drumplot/vatnajokull.html

 

 

Plus the IMO are reporting that they have been under measuring quakes, ie 3 to 4 instead of the 2 to 3 shown on the table.

[john pike]

Friday22.08.2014 15:41:05 64.620 -17.463 0.1 km 2.8 99.0 3.8 km SE of Bárðarbunga

  #################

Edited August 22, 2014 by john pike

[john pike]

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

 

looks like these have now been checked

 

sorry maybe not

Edited August 22, 2014 by john pike

[john pike]

http://www.emsc-csem.org/Earthquake/earthquake.php?id=396369

[The PIT]

Well the patterns seems to be concentrating in two areas now looking at the map. So those are likely areas for the eruption if any.

[john pike]

Friday22.08.2014 17:53:20 64.664 -17.510 3.6 km 3.5 99.0 2.7 km NNE of Bárðarbunga

 

Friday22.08.2014 17:53:20 64.664 -17.510 3.6 km 3.5 99.0 2.7 km NNE of Bárðarbunga Friday22.08.2014 10:56:33 64.665 -17.501 9.0 km 3.5 99.0 3.0 km NNE of Bárðarbunga Friday22.08.2014 10:18:33 64.680 -17.476 9.2 km 3.2 99.0 5.0 km NNE of Bárðarbunga Friday22.08.2014 01:26:29 66.223 -18.226 11.4 km 3.3 99.0 5.8 km NNE of Gjögurtá Friday22.08.2014 00:18:12 64.677 -17.467 8.1 km 3.1 99.0 5.0 km NE of Bárðarbunga Thursday21.08.2014 23:50:20 64.620 -17.459 4.3 km 4.7 99.0 4.0 km SE of Bárðarbunga Thursday21.08.2014 22:44:58 64.681 -16.998 12.3 km 3.0 99.0 14.9 km SE of Kistufell Thursday21.08.2014 17:44:03 64.677 -17.468 4.5 km 3.4 99.0 4.9 km NE of Bárðarbunga Thursday21.08.2014 13:02:08 64.678 -17.470 4.9 km 3.4 99.0 5.0 km NNE of Bárðarbunga Thursday21.08.2014 10:58:09 64.670 -17.456 3.1 km 4.0 99.0 4.8 km NE of Bárðarbunga Thursday21.08.2014 10:29:07 64.613 -17.487 2.7 km 3.7 99.0 3.6 km SSE of Bárðarbunga Thursday21.08.2014 02:14:41 64.712 -16.960 9.5 km 3.0 99.0 14.0 km ESE of Kistufell Wednesday20.08.2014 23:38:04 64.618 -17.466 8.5 km 3.1 99.0 3.8 km SE of Bárðarbunga Total earthquakes: 13

all have been checked

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

Edited August 22, 2014 by john pike

[john pike]

 

i expect quakes to pick up again now

 

 

it looks looks like the bigger quakes are closer to baroarbunga which is where i am looking now

 

i honestly think now its a watch and see what happens with this as even the experts seem to disagree

 

also  expect confusion with the quakes . this is moving so quick, getting these approved must be a nightmare at present

[Gael_Force]

Friday22.08.2014 15:41:05 64.620 -17.463 0.1 km 2.8 99.0 3.8 km SE of Bárðarbunga

  #################

 

That one showed up on the USGS as a 4.3. Something odd going on when it looks bigger than the one later which is checked at 3.5.

Any reason for apparent discrepancy?

[john pike]

hi gael

 

i personally think theres so many quakes at present we will see these differences

 

probably all match up to each other in a couple of days

 

note the bottom bit

 

 

 

 

 

You felt this earthquake. Tell us!

  Magnitude mb 4.3 Region ICELAND Date time 2014-08-22 15:41:08.3 UTC Location 64.56 N ; 17.63 W Depth 2 km Distances 211 km E of Reykjavík, Iceland / pop: 113,906 / local time: 15:41:08.3 2014-08-22
127 km S of Akureyri / pop: 16,563 / local time: 15:41:00.0 2014-08-22

Source parameters not yet reviewed by a seismologist

Edited August 22, 2014 by john pike

[john pike]

http://www.visir.is/strongest-earthquake-yet-in-bardarbunga/article/2014140829718

[john pike]

Volcanoes Today, 22 Aug 2014: Ubinas volcano, Fuego

Friday Aug 22, 2014 18:00 PM |

Powerful vulcanian explosion at Ubinas yesterday

Fuego (Guatemala): Explosive activity has been relatively high recently. Individual eruptions have been producing ash plumes that rose to up to 1 km and incandescent material was seen rising 150-200 m above the crater.

Shock waves often accompany the stronger explosions. There is no lava flow currently.

Ubinas (Peru): After a being relatively since the end of July, a powerful explosion occurred suddenly at the volcano yesterday afternoon at 15:36 local time.

The explosion ejected blocks to up to 2 km distance and produced an ash plume that rose to approx. 7-8 km altitude.

The eruption was likely a vulcanian-type event, i.e. caused by the sudden release of pressure as viscous (sticky) and gas-rich magma had accumulated beneath a solid plug in the vent. It shows that the eruptive phase at the volcano continues and is capable of producing extremely dangerous explosions.

Time-lapse video:

 

 

 

[Buriedundersnow]

dont know if this has been posted or not

 

Fréttastofa RÚV â€@RUVfrettir 6h

#Bardarbunga Large crustal movements detected in relation to magma intrusion. http://www.ruv.is/frett/met-office-25-km-long-dyke-formed â€¦

[john pike]

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

 

looking at the flow there looks To be higher than earlier

[karyo]

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

 

looking at the flow there looks To be higher than earlier

There are some cars there monitoring the situation.

 

According to Jon Freeman the earthquake activity today is reduced compared to yesterday.

 

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

 

Karyo

[john pike]

hi karyo

 

agree its lower but it can also mean magma is moving easier

 

keep looking at quakes close to baroabunga and maybe another bigger one soon

 

how this pans out is anyones guess

 

 

dropping or pausing?