Volcanos in Iceland, possible alarm?

Originally posted by lasertaglover
reply to post by boo1981

 

It is my understanding that gale warnings are quite common over there for sure.

There have been three more quakes there since I last posted a little bit ago.

en.vedur.is...=map

Yes your right, lack of sleep is taking its toll today

I'm going to be glued to this once the kids are in bed.

reply to post by boo1981


The weather only affect the These meters if you click on any of those , you´ll notice 2 spiks in the last 3 days as we had 2 storms come over the country up to 60m per second.

reply to post by PuterMan


Im not sure what to take of this activity, but a similiar event happent late last year when a swarm happened in the ridge area and then there was a swarm that happent inbetween that Langjökull and Hofsjökull. But that activity was beneath a lake there. Not near a shield volcano

So far there have been 55 quakes.
[atsimg]http://files.abovetopsecret.com/images/member/2b8a13c5d6b9.gif[/atsimg]

[atsimg]http://files.abovetopsecret.com/images/member/22e908a2608d.gif[/atsimg]

But you are correct in that here hasn´t been record swarm there the last 15 years. But there was similar activity happening in the ridge area before Hekla went off back in 2000, This one is on close watch as im really interested in what will happen next.

Had a friend over yeasterday and he asked me if the swarm in the ridge was usual , i said sure as long as it dies down within a hour or 2 and nothing else happens in the next 2 days.

reply to post by Spacedman13


Thank you for your reply and I am finding your thread of great interest. I have a very kean interest in Volcanoes/Earthquakes/Earth changes.
I am very grateful to you all on this thread and others like it as I have learnt so much and still am.

Keep up the good work guy's.
And stay safe.

Hmmmm, while i was going through our older posts in this thread i found the last time there was activity near that region, it was a bit west of where the quakes are happening now, there was also a swarm in the ridge area,, i have been saying ridge area now, but it´s actually Reykjarnes peninsula. Sorry about that folks.. Anyways back to my point the last time there was swarms in both those area´s it lead to a eruption began in Gjálp in 1996. You can see the pic´s erlier in this thread.

Back to page 7

According to the last time similar events happent , gjálp erupted some time later. But im not clear on the timeframe.

Sheeeesh,, this country just keeps on amazing me in every way..........

reply to post by Spacedman13


It has me amazed too.
I've just been taking a look here en.vedur.is...=map and i must say its quite breath taking to say the least.

I think that if i hadn't come across this thread then i would be very worried. But as you are from Iceland then I will only start to worry once you do!

reply to post by Spacedman13


Hi Spacedman13, been a little while since I have been in here,

This latest swarm is very interesting, eh?

reply to post by boo1981


Thanks for posting the overview i hadn´t noticed the quake that registerd as 4 richter 230km west of the country.

reply to post by lasertaglover


Welcome back lasertaglover, yes this is wery interesting non stop action and im honestly quite amazed and kind of worried at the same time. Did you check out Putermans thread about Bárðabunga loads of information there you wouldn´t want to miss out if this interests you. Linky

reply to post by Spacedman13


Hey thanks. I had seen his thread, and as always, it is filled with great info!

Looks like that area quited down today!

Earthquake swarm in Langjökull Still seismicity southeast of Húsafell, or the southwest Langjökull. the tremor measured between 2 and 3 on the Richter scale last night, but four earthquakes in the concentration range have been detected in the last 48 hours. In addition, there have been less severe earthquakes. There are no obvious explanations for this swarm, which began before the weekend.

This story was in Visir.is Google translated.

reply to post by Spacedman13


Even though it has definitely quited down, it still is shaking once in a while.

Monday
14.02.2011 20:56:21 64.553 -20.630 1.2 km 1.8 69.92 17.3 km NNE of Skjaldbreið
Monday
14.02.2011 10:44:02 64.584 -20.589 11.9 km 1.4 99.0 18.4 km SE of Húsafell
Monday
14.02.2011 03:10:01 64.562 -20.607 1.7 km 1.1 99.0 18.6 km NNE of Skjaldbreið
Monday
14.02.2011 01:53:23 64.548 -20.616 1.3 km 1.4 99.0 17.1 km NNE of Skjaldbreið


en.vedur.is...=table

It reminds me of getting one of my children to go to sleep when they are in one of those moods to fight agaisnt it and stay awake. Eyelids almost closed, and then pop back open a little. Almost done and asleep, and pop back open just a little bit. I keep thinking that this area is almost asleep again, and then...pop, just a little bit.

Date Time Latitude Longitude Depth Magnitude Quality Location
Tuesday
15.02.2011 12:30:07 64.547 -20.639 1.0 km 1.3 99.0 16.5 km NNE of Skjaldbreið
Tuesday
15.02.2011 09:51:14 64.569 -20.616 1.8 km 0.8 99.0 18.8 km SE of Húsafell
Tuesday
15.02.2011 07:11:20 64.578 -20.595 1.7 km 1.3 99.0 18.7 km SE of Húsafell

en.vedur.is...=table

Shhhhh, finally asleep.

en.vedur.is...=table

We got some swarms in the ridge area

[atsimg]http://files.abovetopsecret.com/images/member/c4e3df4f1709.gif[/atsimg]

[atsimg]http://files.abovetopsecret.com/images/member/3feb568f166e.gif[/atsimg]

I came across a blog from Haraldur Sigurðsson he is a Volcano Physician, google translated.
In his blog he mentioned that he visited our Met office and was told that while the there was high "turmoil" "restlessness" "tremor" in a area a lot of smaller earthquakes get lost in the data they recieve.
He also got this picture that shows the distance in which they detect tremors at what sizes.
[atsimg]http://files.abovetopsecret.com/images/member/bc39683ce09b.jpg[/atsimg]

Green area means they don´t pick up tremors below 1,5 richter,
Yellow, Below 1 richter
Light orange 0,5 richter


As you can see there is alot of area´s in Iceland that are not being observed well enough, and also you can see that there´s a gap in Vatnajökull that should be mutch better observed.
Link to his blog , you´ll need translate on this

reply to post by Spacedman13


I am really not at all familiar with anything on the other side of Iceland, so I am very eager to learn about what is happening with this swarm. I know Wiki is not the best, but in looking at this entry, I can't figure out what volcano would be affected by this swarm.

List of volcanoes in Iceland
en.wikipedia.org...

reply to post by lasertaglover

The area that this swarm is occuring in is called the Hengill region wiki
This is the area that i talk about in the original post, this area is being drilled into for geothermal steam. This is nothing out of the ordinary, there are loads of quakes there every year. I honestly thought this was out of the ordinary first when i saw some activity there and from what i could find, but after puterman showed me that this was quite normal and from what i could research, activity there is quite normal and nothing to worry about.

reply to post by Spacedman13






I've just been looking up some of the lon/lat on Google Earth so I can get an idea of were this swarm is. There seem to be alot of quakes around Hellisheiðarvirkjun and Skeggi á Hengli.

So I found that there is a dormant volcanic system called The Hengill Volcanic System.
LINK: Hengill

The Hengill volcanic system, cutting through Thingvallavatn lake, consists of a series of NE-SW-trending fissure vents, crater rows, and small shield volcanoes occupying a strongly faulted graben.

Background:
Hengill is the easternmost of a series of four closely spaced basaltic fissure systems that cut diagonally across the Reykjanes Peninsula and lies at the triple junction of the Reykjanes Peninsula volcanic zone, the Western volcanic zone, and the South Iceland seismic zone. Postglacial lava flows surface much of the volcanic system. The latest eruption was radiocarbon dated about 1900 years before present. An eruption in the Hellisheidi area once thought to have occurred around 1000 AD at the time of a meeting of the Icelandic parliament at Thingvellir is now known to have occurred at a vent about 5 km away in the Brennisteinsfjöll volcanic system. Geothermally heated greenhouses, hot springs, and geysers are found at the Hveragerdi thermal area.

Hengill would produce an Effusive (lava flows)

EDIT: Spacedman13 I just see your above post I was in the middle of this post and stopping my kids from fighting!

So on reading your above post I now see this is nothing out of the ordinary and a dormant volcano isn't about to wake from its slumber.

reply to post by Spacedman13


Cool, I am glad that it is not an area to worry about much.

Your wiki article says that it last erupted in 90 AD.