The Iceland Volcano Thread

Ice ice, baby. :rolleyes:

Jon Frimann has spotted harmonic tremors pulsing over the past few fays on the Skrokkalda station. It's happening again at the moment.



According to Jon this is from either the Hamarinn, Grimsfjall or Bardarbunga volcanoes.

Worth keeping an eye on.

Edit : Jon has a blog post about this now. So far nothing new has happened.

It is impossible to know what this means exactly. But so far there are no signs of eruption in the area. This activity is less then activity in July 2011 that was created by an minor eruption in Hamarinn volcano. Stronger harmonic tremor pluses appear on SIL station at longer distance. But for now (when active) most of the activity only appears on SIL stations closest to the Vatnajökull glacier. I am going to continue to monitor the current situation. I will update or make a new blog post about what is going on if anything happens.

Wow that is a major swarm alright.

141_Oscar_Mike wrote: »

And it continues. Very long swarm this.

http://www.jonfr.com/volcano/?p=3154

Possible 6.8 due to increase stress at some point, could trigger the south of Iceland.

http://en.vedur.is/about-imo/news/nr/2558

Extracted from;

http://volcanocafe.wordpress.com/2012/10/23/big-brother-and-the-big-one-lessons-from-aquila/#comments

islander et al. says:
October 23, 2012 at 22:43

Thanks Bruce for todays excellent blog-post. Well written, well argued and informative.
(besides supplement “writing revue” from “truckster” GeoLoco, and others commenters comments are good addition too, “to have on file” so to speak. Thanks all.)
Given the circumstances a “Like” whould have been in order, but in consideration for the victims (all Italian´s and Italy as a whole in this case), I will not pass one this time.
BTW, IMO has stated there is risk of “up to 6,8R off North-Iceland” is possible. I was visiting in the Sigló region this summer, and building standard seem to me be good to excellent. Most houses are of good steel re-einforced concrete, and older ones are mostly wodden ones, that usually stand well up to Icelandic earthquakes, but their foundations (likely mostly older concrete, with various quantity of steel in them). Those can be damaged, but often are repairable. That is simlar to what happened as most damage too many houses in the SISZ in three 6+ quakes in years 2000 and 2008.

There could be damage, f.e. at Siglufjörður Town or harbour, or surrounding town or settlements, like Ólafsfjörður or Dalvík Towns, but again I hope this large quake will not hit in one “thump”, but be dispersed in many smaller ones (stress is there and can only release in quakes, question is how many or how dense they be). There was interviews with one witness on TV tonight about earlier quakes in the region (1970s), and damage to houses did happen then, and people was very scared, assembling in one place at a football-field and staying into the night.

One Icelandic Volcano Expert is speculating (on his blog http://vulkan.blog.is/blog/vulkan/ ) there might? be ongoing volcanic intrusion into sediments under Eyjafjarðaráll-region. I think he has good merit for speculating such (see graphs in his icelandic-text blog). Current swarm is almost too steady for anything else but ongoing intrusion (at depth) creating Christmas-tree like sills due lower density of the sediment layers.

Well boardsies... you might very well have one of your own reporting live from the site of the action... well kinda... I am going to Iceland next Thursday... that is Weather permitting (bombing charts, hurricanes, snow blizzards), earthquake permitting.... never had so much extreme weather and natural phenomenons threaten to show up for a holiday!!

Have a great time, had a few trips there myself in the past, the scenery is unreal.

Had a wonderful trip. Didn't notice any effects from any earthquakes!! Got to see the Big E ( can't spell it, or pronounce it despite lessons!) lol and lots of other volcano's.
It's amazing countryside, craters, geysers, new islands, black beaches etc....Wonderful...

It is an amazing country to see the raw power of nature at work in front of your eyes. When I went in 2010 just after the Eyjafjallajökull eruption stopped you could have a volcano barbeque there.

I love the forests they have there as well you would never get lost in them

Spindle wrote: »

It is an amazing country to see the raw power of nature at work in front of your eyes. When I went in 2010 just after the Eyjafjallajökull eruption stopped you could have a volcano barbeque there.

I love the forests they have there as well you would never get lost in them

I was astounded by their forests too..

Possible flood, No EQ's, however the water levels are not rising. Might have to wait a few hours.

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

cyclops999 wrote: »

Seismic activity in Iceland for the last 48 hours is as quite as I've seen in a long time

EQ, yes. Maybe something else happening longer term.

Over the last few weeks, the mantle under Iceland looks to be on the move again.

http://hraun.vedur.is/ja/oroi/dyn.gif
http://hraun.vedur.is/ja/oroi/gil.gif

Possible Intrusion under Bárdarbunga?

http://hraun.vedur.is/ja/oroi/allarsort.html

http://youtu.be/WZOsIJC8Ad8 Thanks to DFM

http://youtu.be/CAbjllFA54k Thanks to chryphia

Pulled the data from: http://volcanocafe.wordpress.com/2012/12/03/a-tube%C2%B4s-tale-part-2-strange-creatures-and-the-human-touch/#comments

Special thanks to; Diana, Irpsit, Inge B and Oliver St John-Mollusc

EQ in Hekla a while ago.

http://hraun.vedur.is/ja/hekla/borholu_thensla.html

12% dip in the strain today. 12% of the year 2000 Hekla Eruption.

http://hraun.vedur.is/ja/strain/1sec/index.html.

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

The next few hours or days could get very??

An uncertainty phase (like a low level alert) has been issued now for Hekla because of the unusual earthquakes that have been going on around there recently.

Uncertainty phase because of seismic activity in mount Hekla.

The National Commissioner of the Icelandic Police (NCIP) and the Police commissioner at Hvolfsvöllur declare an uncertainty phase (lowest level of warning), because of seismic activity in mount Hekla.

The Icelandic Met Office has informed the Civil Protection and Emergency Management of NCIP about unusual seismic activity in mount Hekla. The Icelandic Met Office has raised the ICAO aviation color code to yellow concerning air traffic, which means that mount Hekla is showing an unusual activity.

Uncertaintyphase means that supervision has been raised on that course of events that may threaten public health and safety, or that environment or inhabited area may be threatened. To declare an uncertainty face is a part of work process in the setup of public safety to secure a formal communication between response teams and to secure dissemination of information.

In light of all of this the National Commissioner of the Icelandic Police and the Police commissioner at Hvolfsvöllur would warn people from hiking on mount Hekla while this uncertainty phase is in force

http://almannavarnir.is/displayer.asp?cat_id=8&module_id=220&element_id=3007

The Police in Hvolsvöllur and the Civil Defense department have expressed concern over increased seismic activity around Hekla volcano in the past few days. Seven tremors have been measured in the last two weeks, a frequency which has never been matched since Hekla’s previous eruption.

According to geologists at the Icelandic Meteorological Office, the seven earthquakes were measured some 5 km from the top of the volcano and at a depth of 11 to 12 km. However, no magma movement has been measured. The volcano is being closely monitored at the moment by geologists who decided to alert authorities as Hekla eruption usually happen with very little warning, and the mountain itself is a popular hike among locals and tourists alike

STO was there for the 2000 eruption, it isn't that recent.

BUR strain took a dive before that eruption. There was very little warning, just minutes.



According to Icelandic media nothing new has been noticed today and the alert level will be re-evaluated in the morning.