Eyjafjallajoekull volcano eruption - Hekla NOT erupting

Discuss Astronomy, Geology and other related subjects like Earthquakes, Volcanos, Tsunami's and other Natural events around the world.

Moderator: S2k Moderators

Message
Author
lurkey
Category 5
Category 5
Posts: 2381
Joined: Tue Aug 31, 2004 4:54 pm
Location: Raleigh, NC

Re: Iceland's Eyjafjallajoekull volcano eruption

#21 Postby lurkey » Sat Apr 17, 2010 8:42 pm

[youtube]http://www.youtube.com/watch?v=9sryalI57oo[/youtube]

Incredible video of a jökulhlaup (volcanic induced flood by melting of a glacier) from the eruption beneath the Eyjafjallajökull glacier in Iceland.

Understanding the split personality of Iceland's volcanoes

http://geology.rockbandit.net/
0 likes   
There are more things in heaven and earth, Horatio,
Than are dreamt of in your philosophy.
-- Hamlet, Act 1, scene 5

It only ends once. Anything that happens before that is just progress. - Jacob, Lost


"Every single day, ordinary people do extraordinary things." --Jimmy V

User avatar
somethingfunny
ChatStaff
ChatStaff
Posts: 3926
Age: 36
Joined: Thu May 31, 2007 10:30 pm
Location: McKinney, Texas

Re: Iceland's Eyjafjallajoekull volcano eruption

#22 Postby somethingfunny » Sun Apr 18, 2010 2:33 am

A few more pictures I've found:

Image

Image
0 likes   

User avatar
WeatherLovingDoc
S2K Supporter
S2K Supporter
Posts: 453
Joined: Fri Sep 05, 2008 10:08 pm
Location: Washington D.C.

Re: Iceland's Eyjafjallajoekull volcano eruption

#23 Postby WeatherLovingDoc » Sun Apr 18, 2010 10:02 am

Thanks for those pictures and the video. The sine wave (smooth repetitive oscillation) illustration of periodic wave length was the best natural example I've ever seen. Incredible.
0 likes   

jinftl
Category 5
Category 5
Posts: 4312
Joined: Tue Aug 31, 2004 4:47 pm
Location: fort lauderdale, fl

Re: Iceland's Eyjafjallajoekull volcano eruption

#24 Postby jinftl » Sun Apr 18, 2010 10:15 am

Excerpts from Bloomberg article:


Volcanic eruptions may continue for months, curtailing European air traffic when the ash reaches the region, said Sigrun Hreinsdottir, a geophysicist at the University of Iceland in Reykjavik. “From what we’ve seen, it could erupt, pause for a few weeks, and then possibly erupt again.”

The last eruption of Eyjafjallajökull in December 1821 continued until January 1823. The current blast has sent ash to as high as 7 kilometers (4.5 miles), according to Gudrun Larsen, a vulcanologist at the University of Iceland. The magma had to pierce 200 meters of ice before erupting, she said.

“We really don’t know if this eruption is going to last as long as the previous one, but we can’t say it’s not a possibility,” Larsen said by telephone.


“The problem here is we have magma interacting with glacier ice, and that leads to explosions,” Hreinsdottir said. “That causes the material to go much higher in the air.”

Mike Burton, a researcher at the Italian National Vulcanology Institute who has studied the ash from the latest explosion, said it presents more of a threat to aircraft than would the dust from a typical eruption.

“It’s likely that ash production will continue long after all the ice is melted in the volcano as this kind of magma can produce ash without water,” Burton said by telephone. “Fine ash is easier to transport long distances and goes higher into the atmosphere. This is not good news for flights.”

http://www.bloomberg.com/apps/news?pid= ... LsNg&pos=8
0 likes   

User avatar
HURAKAN
Professional-Met
Professional-Met
Posts: 46086
Age: 37
Joined: Thu May 20, 2004 4:34 pm
Location: Key West, FL
Contact:

Re: Eyjafjallajoekull volcano eruption - Hekla NOT erupting

#25 Postby HURAKAN » Mon Apr 19, 2010 2:39 pm

Hekla Volcano Not Erupting; Journalists Fail to Fact-Check Again
April 19, 2010 02:58 PM EDT
© 2010 by Brenda Daverin
1 person recommends this Tags: news, hekla, hekla volcano, second volcanic eruption, hekla eruption, eyjaflallajokull, iceland volcano, hekla iceland, eyjaflallajokull iceland

Users of Twitter rocketed the Hekla volcano in Iceland to the top of the trending topics list this morning amid widespread claims it had started erupting. If this were indeed the case, it would only increase the problems being caused by the Eyjaflallajokull volcano's ash cloud spreading across Europe. Fortunately for Iceland and the rest of the world, this story turned out to have a far different cause for being. The webcam normally pointed at Hekla was instead targeting Eyjaflallajokull, entirely by accident.

The darker issue inside this particular story is how credulous the international media was about it. Twitter messages from people with no means of verifying the second eruption retweeted the original claim, and reporters saw this and moved to claim it was legitimate without checking with Iceland's geologists and volcano-watchers to make sure it was happening.

An old journalism philosophy can be roughly phrased, "If your mother says she loves you, follow up on it." The jump to conclusions about the Hekla volcano is part of what I have seen happening too often over time with news in this age of instant access to information. If someone says it happened, it's too easy to believe it's true, especially for those of us who grew up in a time when you could trust what reporters said because you knew they'd taken the time to double-check their information. When it's that easy to spread false rumors, it's really not that hard to check them out. The truth is often a simple search away.
0 likes   

grentz7721
Category 1
Category 1
Posts: 319
Age: 38
Joined: Sun Apr 06, 2003 12:24 pm
Location: Massillon, OH, US
Contact:

Re: Eyjafjallajoekull volcano eruption - Hekla NOT erupting

#26 Postby grentz7721 » Tue Apr 20, 2010 12:00 pm

How will this eruption affect the climate?
0 likes   

User avatar
HURAKAN
Professional-Met
Professional-Met
Posts: 46086
Age: 37
Joined: Thu May 20, 2004 4:34 pm
Location: Key West, FL
Contact:

Re: Eyjafjallajoekull volcano eruption - Hekla NOT erupting

#27 Postby HURAKAN » Tue Apr 20, 2010 1:56 pm

grentz7721 wrote:How will this eruption affect the climate?


It's simply not big enough to have a noticeable effect on climate at this point.
0 likes   

User avatar
KWT
Category 5
Category 5
Posts: 31414
Joined: Tue Aug 17, 2004 11:02 am
Location: UK!!!

#28 Postby KWT » Mon May 03, 2010 7:27 pm

Just thought I'd say another eruption is occuring and its starting to have an effect on some airspace again as well.
0 likes   
Personal Forecast Disclaimer:
The posts in this forum are NOT official forecast and should not be used as such. They are just the opinion of the poster and may or may not be backed by sound meteorological data. They are NOT endorsed by any professional institution or storm2k.org. For official information, please refer to the NHC and NWS products

User avatar
Crostorm
Category 5
Category 5
Posts: 2060
Age: 49
Joined: Mon Dec 25, 2006 3:51 pm
Location: Croatia-Europe
Contact:

Re: Eyjafjallajoekull volcano eruption - Hekla NOT erupting

#29 Postby Crostorm » Tue May 04, 2010 4:55 am

Eruption in Eyjafjallajökull - Status Report: 16:00 GMT, 03 May 2010
Icelandic Meteorological Office and Institute of Earth Sciences, University of Iceland

Compiled by: Sigurlaug Hjaltadóttir, Freysteinn Sigmundsson, Björn Oddsson, Sigrún Hreinsdóttir, Þórdís Högnadóttir.

Based on: IMO seismic monitoring; IES-IMO GPS monitoring; IMO hydrological data; web cameras of the eruption site from Vodafone; IMO weather radar measurements, MODIS satellit image; information from scientists at Gígjökull, information from the Icelandic Coast Guard flight.

Eruption plume:
Height (a.s.l.): Largest plumes observed at 5-5,5 km height (17-18,000 ft) estimated from the Icelandic Coast Guard (ICG) flight at 14:30. The plume has also been observed on IMO's weather radar at 4.0-5.2 km height between 13:00 and 15:00 GMT. The plume rises higher after large explosions.
Heading: East-south-east to south-east from the eruption site. Plume track clearly visible at least 200 km from the eruption site and probably another 200 further to the SE on MODIS (11:20 GMT) satellite imagery.
Colour: Observation from ICG-flight: Dark grey (ash) clouds observed over the eruptive site. White (steam) plumes rising from Gígjökull otulet glacier, north of the eruption site (similar as yesterday).
Tephra fallout: Moderate ash-fall reported in Álftaver, 65-70 km east-south-east of Eyjafjallajökull (07:00-10:00 GMT. An ash cloud also observed over village of Vík (10:00 GMT), 40 km south-east of Eyjafjallajökull.
Lightning: No detections today over the eruption site (16:00 GMT).
Noises: Scientists working at Gígjökull regularly hear explosions and booming sounds and feel the ground vibrate. The vibrations are not felt in 3-4 km distance.

Additional note: The scientists at Gígjökull experienced discomfort due to gas.

Meltwater: Today water temperature at the Markarfljot bridge was measured 11°C but about 3°C in a 2 km distance from Gígjökull. Water is flowing on both sides of the glacier and pulses of meltwater flow down the channels every 10 minutes or so (according to scientists at Gígjökull). Water level gauge at Gígjökull also records the pulses. Temperature measurements at Markarfljot bridge show a pulse of water temperature up to 17°C at 06:00 GMT this morning and another smaller pulse reaching about 15°C between 08:00 and 09:00. Water temperature has now dropped down below 4°C.

Conditions at eruption site: The eruption site was seen on a vido camera around noon (13:00 GMT). Dark ash clouds propagating eastwards. The lava is probably still propagating down Gígjökull producing more meltwater and steam.

Seismic tremor: Tremor levels intensified last night (2 May) and have remained high since. This intensification is seen in the frequency range 0,5-2 Hz but not above 2Hx (2-4 Hz).

Earthquakes: A few earthquakes occurred early this morning. They seem to be located at about 18 km depth just south of the eruption site.

GPS deformation: Horizontal displacement towards the center of Eyjafjallajökull volcano. Vertical displacement at stations closest to the eruption site had indicated increased subsidence rate in the last few days but now the deformation is similar as before 29. April.

Other remarks: No measurable geophysical changes within the Katla volcano.

Overall assessment: The overall activity has not changed much since yeasterday (from the last report). Presently there are no indications that the eruption is about to end.
Image
http://www.earthice.hi.is/page/ies_Eyja ... l_eruption
0 likes   

User avatar
cycloneye
Admin
Admin
Posts: 142552
Age: 68
Joined: Thu Oct 10, 2002 10:54 am
Location: San Juan, Puerto Rico

Re: Eyjafjallajoekull volcano eruption - Hekla NOT erupting

#30 Postby cycloneye » Sat May 08, 2010 11:27 am

The volcano has been very active in the past few days. Image from today of the ash plume.

Image

And look at image from this morning how active it is.

Image
0 likes   
Visit the Caribbean-Central America Weather Thread where you can find at first post web cams,radars
and observations from Caribbean basin members Click Here

User avatar
cycloneye
Admin
Admin
Posts: 142552
Age: 68
Joined: Thu Oct 10, 2002 10:54 am
Location: San Juan, Puerto Rico

Re: Eyjafjallajoekull volcano eruption - Hekla NOT erupting

#31 Postby cycloneye » Wed May 12, 2010 8:48 am

The latest ash plume directions.

Image
0 likes   
Visit the Caribbean-Central America Weather Thread where you can find at first post web cams,radars
and observations from Caribbean basin members Click Here


Return to “Astronomy and Geology”

Who is online

Users browsing this forum: No registered users and 9 guests