Katla volcano is an European, hence a global, socio-economic threat

(News & Editorial)

Iceland’s Katla Volcano Eruption Imminent 10/13/2011
Listen to the YouTube audio report (click on link or paste address in your browser);
http://www.youtube.com/watch?v=XIRaxE6A3Xk

[If Katla, Hecla or any other major volcano 1) erupts  with an explosive force that the news media becomes dramatically concerned with, 2)  if the resultant effects are seen as an immdiate threat to other nations or blocks of nations, 3) if the major eruption continues for several weeks or months to provide a planetary dust veil, then you might find it to your benefit to have printed, read and acted upon the information given in the following posts:
(Survival Manual/1. Disaster/Volcanic winter)
(Survival Manual/3. Food & Water/Developing a survival food  list)
(Survival Manual/7.  Warehouse/Food/Last minute shopping list)

* There is more information on how volcanic eruptions can affect Europe in the News and Editorial post, How volcanoes like Tambora and Laki can affect our ecology,  Mr. Larry]

Katla volcano
http://www.volcanodiscovery.com/xxx/news.html
“Katla volcano, located near the southern end of Iceland’s eastern volcanic zone, is hidden beneath the Myrdalsjökull icecap. Katla is one of Iceland’s most active and most dangerous volcanoes, infamous for its large eruptions happening on average every 50-100 year, causing devastating glacial floods.
In this recent year, increased seismicity and inflation of Katla has been being measured. Katla, statistically due for a new eruption, is being very closely monitored and an eruption in a not too distant future would not come as a big surprise.

Friday, Oct 28, 2011
        Signs of unrest beneath Katla, one of Iceland’s most active volcanoes continue. A seismic swarm was recorded under the northern part of Katla volcano’s caldera beneath the Mýrdalsjökull glacier in southern Iceland over the past 48 hours. 35 quakes of up to 3.2 magnitude, many at shallow depths, occrred mostly in the afternoon of 27 Oct.
.
 Katla (Iceland’s massive volcano) on verge of eruption
October 13, 2011, Mirror.co.uk
http://www.mirror.co.uk/news/top-stories/2011/10/13/iceland-volcano-katla-ready-to-erupt-and-paralyse-air-traffic-115875-23486427/
“Seismologists are nervously watching rumblings beneath Katla which could spew  an ash cloud dwarfing the 2010 eruption that cost airlines two billion dollars  (£1.27 billion) and drove home how vulnerable modern society is to the whims of  nature.
Brooding over rugged moss-covered hills on Iceland’s southern edge, Katla is  a much bigger beast than the nearby Eyjafjallajokul volcano, which blasted ash  all over Europe for several weeks in an eruption that local scientist Pall  Einarsson describes nonetheless as “small”.
Civil defence authorities have been holding regular meetings with scientists. Disaster officials have also drafted an evacuation plan and set aside temporary housing, but many fear they may have less than an hour to evacuate once the volcano erupts.Iceland sits on a large volcanic hot spot in the Atlantic’s mid-oceanic ridge. Eruptions, common throughout Iceland’s history, are often triggered by seismic activity when the Earth’s plates move and magma from deep underground pushes its way to the surface.
The longer pressure builds up, the more catastrophic an eruption can be. Records show that Katla usually has a large eruption twice a century. Since its last eruption was almost exactly 93 years ago, it is long overdue for another, seismologists say.Named after an evil troll, Katla has a larger magma chamber than  Eyjafjallajokul’s. Its last major eruption in 1918 continued more than a month, turning day into  night, starving crops of sunlight and killing off some livestock.Go Camping for 95p! Vouchers collectable in the Daily and Sunday Mirror until 11th August .
Of Iceland’s more than 22 volcanoes, seven are active and four are  particularly active – including Katla and Hekla. Although it does not pose the same flood risk as Katla because it’s not  situated beneath an icecap, Hekla is one of Iceland’s most active volcanoes and  sits in the path of most international flight patterns.
Like Katla, Hekla is also overdue for a large eruption and could produce a  disruptive and dangerous ash cloud that, in addition to disrupting air travel,  could lower overall temperatures across continents by blocking out sunlight for  days or weeks
.
Tuesday, Sep 06, 2011 [a month earlier]
        A new seismic swarm is occurring at Katla volcano, with over 60 small earthquakes of magnitudes of up to 2.6 at 1-8 km depth beneath the caldera since Sunday. It could be a possibility that this swarm is caused by the injection of magma at depth, but could also be due to structural displacements. It is unclear whether the recent signs of unrest at Katla are the precursors of a new eruption in a near to medium future.

Katla Volcano To Topple Eurozone?
September 7, 2011 at 10:10 am (PT), Modern Survival Blog
http://modernsurvivalblog.com/tag/katla/
“OK, maybe the thought of a volcanic eruption capable of toppling the economies of nations is a bit dramatic, but, given the current teetering status of many of the European nations within the Eurozone, and given the history of a nearby Icelandic volcano named ‘Katla’, maybe it’s not beyond the realm of possibility that a natural disaster of sufficient magnitude could begin the process of falling dominoes.
Remember way back in April of 2010 when a volcano in Iceland erupted and shut down air traffic across much of Europe for weeks? Well, another volcano nearby (Katla), which has always erupted within 1.5 years of it’s neighbor, has the potential to erupt TEN TIMES the magnitude of what we witnessed nearly a year and a half ago.
The last time Katla erupted was back in 1918. It was big time.
Lately, this volcano has been very active. Earthquake swarms and hydrothermal activity leave no doubt that this monster is about ready to do something. The question is, when it does, how bad will it be…
Reported in the ‘Iceland Review’ today, “Increased geothermal heat and seismic activity below Mýrdalsjökull glacier in south Iceland, which covers the volcano Katla, may indicate an upcoming eruption. Scientists are closely monitoring the volcano, although it is not certain whether an eruption is imminent.”
There is only one definite indication of an onset of an eruption in Katla. All sources on Katla eruptions over the past 500 years mention large earthquakes that can clearly be found a few hours before the eruption begins. That is in fact the only absolute warning.
Point is, we will only have a few hours warning, at best. Having said that, I believe we are being warned now, given Katla’s history (always within 1.5 years of Eyjafjallajokull) and the recent activity at the caldera.

From an insider today:
Never a dull moment! Katla activity was due to large hydrothermal activity. Low clouds stopped observers from seeing much but I can confirm that large cracks and new Calderon’s were observed to the southern end. We are now watching Katla even closer.
From a few days ago:
The last few days have seen increasing activity. Harmonic tremors followed by small quake storms (40 quakes in last 24 hours max 2.6 magnitude). Magnitude of quakes are low but it is clear that this definitely is magma intrusion. What this means is the restriction on the magma is low and it is able to move through the bedrock without causing large quakes. This pattern may stop, but can change very quickly. I still feel a large quake storm of mag 4+ would be needed for an eruption. This is not so for a fissure eruption, but that’s just speculation. Inflation is still ongoing and although its very clear its building for an eruption BUT that could be a long way off yet. There is just no way of knowing. There is a theory that magma rises, causes inflation, rocks crack and are absorbed into the magma and this causes deflation.”

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