Evacuaties na uitbarsting IJslandse vulkaan onder gletsjer

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Op woensdag 14 april 2010 13:05 schreef kahaarin het volgende:
Ontzettend mooie foto's, griezelig en gevaarlijk maar wel mooi.

Lijkt me ook erg moeilijk om als er iets gebeurt daar snel hulp te verlenen, helicopters kunnen natuurlijk ook niet door stoom/as heen vliegen. Gelukkig doen ze daar niet moeilijk om evacueren, dit is de tweede keer al dit jaar en je hoort niets over mensen die te eigenwijs zijn om te gaan.

Ik heb net ff gezocht op Katla maar kon niets wereldschokkends ontdekken, die houdt zich tot nu toe rustig, of hebben jullie iets gezien?

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Op woensdag 14 april 2010 13:17 schreef mouzzer het volgende:
http://twitter.com/breakingnews

Update: Volcano in Iceland erupts near glacier, melting ice and causing flooding; 800 evacuated - AP

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New Iceland Eruption Causes Glacial Flooding

The water level by the glacial tongue Gígjökull on the northern Eyjafjallajökull has increased significantly since last night. Before the new eruption began the water level was 75 centimeters, now it has exceeded two meters and continues to rise.

he Coast Guard airplane TF Sif is currently flying over Eyjafjallajökull with earth scientists and reporters on board. They are in direct contact with the Icelandic Civil Protection Department, ruv.is reports.

They have confirmed that there is glacial flooding on both sides of Gígjökull and that the water level in the lagoon in front of the glacial tongue is constantly increasing. The water that flows into the lagoon is dark in color.

However, the water flow has yet to reach the peak of spring thaw.

Visibility is very limited in the area but the airplane's crew has spotted a cloud of volcanic ash and smoke which extends 12,000 to 14,000 feet into the air and appears to be coming out of the glacier’s summit.

Magma is melting its way through the icecap; there is a circular ice free area by the summit measuring approximately 200 meters in diameter.

The Ring Road, Iceland’s highway No. 1, is closed between Skķgar and the crossroads to Gunnarsholt east of Hella.

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Iceland Volcano in Eyjafjallajökull Glacier seen in Southwest

People have seen the fire breaking out in the southwest part of the top crater of Eyjafjallajökull glacier. Visibility is limited due to clouds, but two reports have now confirmed at nine o’clock that an eruption has now melted the ice on the top of the glacier. The crew of the coastguard airplane flying over the eruption saw the fire breaking out at the top. A listener to Ríkisútvarpid in Westmann Isles confirmed this report. The eruption itself started just before seven o’clock according to scientists at the Icelandic Weather Institute.

The river Markarfljķt is now 100 centimeters higher than before. The floods could be the most dangerous consequence in the immediate future, but an even greater disruption could come from the volcanic ash that could affect flights over the North Atlantic. There is no indication of this at this point.

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Risk of Phreatic Eruption in Iceland
Volcanologist Haraldur Sigurdsson said there is a risk of a phreatic eruption in Eyjafjallajökull glacier in south Iceland, which occurs when magma makes contact with water. The crater at the glacier’s summit is filled with ice which is starting to melt.

“There have been indications for two to three months that the main movement of magma is straight underneath the summit crater at a significant depth,” Sigurdsson told mbl.is.

He said the crater is quite large, approximately five kilometers in diameter. Now the ice inside it is starting to melt as magma is flowing underneath the ice. “When it melts its way through there is a risk of a phreatic eruption.”

Sigurdsson said the magma is possibly similar to that which spurted to the surface in the 1821 Eyjafjallajökull eruption.

That was rhyolite magma, which is located higher up in the mountain and is more sour and different in character from the magma on Fimmvörduháls, which formed lava, the volcanoligist explained.

“It causes phreatic eruptions,” Sigurdsson iterated, adding that such an eruption could cause ash to fall over areas in the vicinity of the glacier.

A jet of tephra could form, Sigurdsson said, similar to what happens in volcanic eruptions in Hekla. The volcanologist stressed that these are just theories.

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Op woensdag 14 april 2010 13:29 schreef Roel_Jewel het volgende:
http://www.icelandreview.com/icelandreview/daily_news/?cat_id=16539&ew_0_a_id=360683
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Meer over phreatic eruptions: http://en.wikipedia.org/wiki/Phreatic_eruption

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Large Fault Trough Around Iceland Crater
Geologists who are flying over Eyjafjallajökull in TF-SIF, the Icelandic Coast Guard plane, say that a large fault trough (graben) has formed around the crater which is up under the summit of the glacier.

Great changes have occurred over the last hour. They considered, just after 9 am, that the gap itself could be 200 meters. However, no eruption or fissure could be seen due to the cloudy weather. TIF-SIF is equipped with equipment that can penetrate through clouds, ruv.is reports.

The geologists can see that the fissure is about 500 meters. There is ash fall to the east close to Fimmvörduháls. The cloud of volcanic ash and smoke has now risen up to 22,000 feet.

The eruption is only in the top crater, not in the southern sides. The glacial river is in flood, 1,000 cubic meters per second, and is increasing.

The walking bridge over the lagoon has disappeared and the flood has greatly increased from the glacial tongue Gígjökull. It reaches halfway to the Markarfljķt river.

People in cars who are currently by the river should get to Hvolsvöllur as soon as possible. The Civil Defense Agency requests those who went to tend animals in Landeyjar to do the same. They are urged to get themselves to Hvolsvöllur immediately.

In a low flight by Mt. Pétursey and west by Mt. Eyjafjall, geologists in TF-SIF did not see any changes in the watercourse there. The flood appeared to go further north and down the Markarfljķt sands.

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Wednesday 14th April 2010
Eyjafjallajokull volcano, Iceland
A new eruption occurred today at Eyjafjallajokull volcano, Iceland. The eruption was accompanied by earthquakes and has opened up a new vent. Glacial flooding has occurred on both sides of Gígjökull. Flow in the Markarfljķt river has increased significantly and the water level has risen by 84 centimeters. Magma is melting its way through the icecap producing a circular ice free area by the summit 200 meters in diameter. Iceland’s highway No. 1, is closed between Skķgar and the crossroads to Gunnarsholt east of Hella. About 45 people in Langidalur valley north of the Eyjafjallajökull glacier have been isolated by the eruption, and 800 people were evacuated

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Severe flooding expected in South Iceland
Posted on14 April 2010. Tags: Eyjafjallajokull, Iceland, volcano

A new eruption is taking place under Iceland’s Eyjafjallajokull glacier and flooding is expected. Journalists to the south of the glacier say they can already see the flood waters approaching.

Flights below 30,000 feet have been banned from the zones to the north and the east of the new eruption and residents south of the glacier have been evacuated.

Scientists are also monitoring the condition of drinking water in the Westman Islands, which comes from the glacier. No changes in quality have yet been recorded.

Route one – Iceland’s ring road and a vital traffic artery – is closed between Hvolsvollur and Vik.

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Op woensdag 14 april 2010 14:50 schreef kahaarin het volgende:
[ afbeelding ]

Zou dit beeld komen van deze melding?
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De ringroad is nu ook afgesloten blijkbaar.....

_{Sorry, edit, bron}: http://www.volcanolive.com/volcanolive.html

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Op woensdag 14 april 2010 14:59 schreef Isdatzo het volgende:

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Sterker nog, ze zijn een stuk van de ringweg aan het afgraven zodat het smeltwater straks de brug niet vernielt.

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Op woensdag 14 april 2010 14:59 schreef Isdatzo het volgende:

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Sterker nog, ze zijn een stuk van de ringweg aan het afgraven zodat het smeltwater straks de brug niet vernielt.

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So, after yesterday's tectonic disappointment, I bring good news! If you like volcanoes, anyway. Our old friend Eyjafjallajökull, who we thought was stopping, is in fact not stopping. At all. News have been coming out of another eruption this morning following a large earthquake swarm overnight, this time underneath the Eyjafjallajökull glacier itself, most likely in the volcano's central caldera (crater).

The current fissure is believed to be 1-2 kilometres long, located in the southwestern part of the summit caldera (crater). This is melting a nice little series of holes in the glacier, estimated to be something like 600 metres in diameter and following the line of the fissure. An eruption plume, mainly of steam but with some ash, is confirmed to have reached 22,000 ft. Ash-fall is to the east, confirmed in the Fimmvörđuháls area (near the old fissures). The level of the river Markarfljķt is increasing as ice melts - a jökulhlaup (glacial meltwater flood) is expected, although the size of this depends on whether water dams up under the glacier or not. Apparently authorities have decided to sever the ring road in order to give the water an easy route to the coast, hopefully saving expensive bridges.

Volcanic tremor is still increasing at this point, so the eruption may be increasing in power a bit. As I write this it is estimated to be 10-20 times more powerful than the relatively small Fimmvörđuháls fissure eruption.

So, what more can we expect? Truthfully, being under the glacier, this is going to be a lot less spectacular for tourists. No easily visible fire fountains here. There is a risk of explosions, but the entire eruption is basically one continuous explosion due to the constant phreatic interactions anyway. The jökulhlaup is definitely the largest threat in my mind, but good preparation and monitoring (of river levels, etc) means that the risk from this should be minimised.

Homes in the area were evacuated very swiftly last night, so I doubt anyone is at any kind of immediate risk. I'm hearing that scientists believe the eruption will be small, although we all thought it was stopping yesterday, so you should always take any kind of prediction with a pinch of salt.

So, that's about all I have for now. I hear the weather is clearing up, so we should know more soon. And as I hear it, so will you!

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Op woensdag 14 april 2010 15:03 schreef Isdatzo het volgende:

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Bron.

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A huge flood is on its way down the Markarfljķt sands and the old bridge is submerged. To try and save the new Markarfljķt bridge, the Ring Road was broken up to the east of the river.

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Op woensdag 14 april 2010 15:10 schreef Roel_Jewel het volgende:

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Zag t idd nu ook @ http://www.icelandreview.com/icelandreview/daily_news/?cat_id=16539&ew_0_a_id=360697
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Op woensdag 14 april 2010 15:14 schreef Isdatzo het volgende:

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Ze overwegen het om op nog 2 plekken de weg door te steken hoor ik net .

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Op woensdag 14 april 2010 15:17 schreef kahaarin het volgende:

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Zou dat echt helpen als er een rivier van water de berg af komt?

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Road constructers managed to break the Ring Road in an effort to save the bridge and glacial water is now flowing with much force through the hole in the road. The plan is to break the road at two other locations as well, mbl.is reports.

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Op woensdag 14 april 2010 15:17 schreef kahaarin het volgende:

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Zou dat echt helpen als er een rivier van water de berg af komt?

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Op woensdag 14 april 2010 15:29 schreef Frutsel het volgende:
Als dat ding echt ploft krijgen wij ook nog wat as met Noordwesten wind

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Op woensdag 14 april 2010 15:32 schreef kahaarin het volgende:

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Die wordt alleen zondag voorspeld, hoe dan ook, het lijkt nu niet meer afwendbaar....

http://www.knmi.nl/waarschuwingen_en_verwachtingen/

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Op woensdag 14 april 2010 15:18 schreef Roel_Jewel het volgende:
Op Google Maps staat een haarscherpe foto, maar die is voor de uitbarsting net te ver naar het oosten toe, lijkt me: http://tinyurl.com/y2np9b8
Probeer op die kaart nog uit te vinden waar het smeltwater verwacht wordt (en ze dus die ringroad aan het doorbreken zijn).

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Op woensdag 14 april 2010 15:36 schreef Isdatzo het volgende:

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Het gaat er meer om wat de wind op grotere hoogte doet. En het ziet er naar uit dat die wel voornamelijk noord-westelijk is (of iig afkomstig uit het..) aankomende tijd.

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Op woensdag 14 april 2010 15:43 schreef kahaarin het volgende:

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Lol, idd, maar als het in de bovenste luchtlagen zit is het helemaal niet te voorspellen waar het naar beneden gaat komen, denk maar eens aan saharazand.

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Op woensdag 14 april 2010 16:00 schreef Roel_Jewel het volgende:
Om het een en ander te visualiseren .

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Op woensdag 14 april 2010 16:04 schreef Isdatzo het volgende:

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=

[ afbeelding ]

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Op woensdag 14 april 2010 16:19 schreef Isdatzo het volgende:
[ afbeelding ]

En deze huisjes staan ook niet bepaald strategisch .

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Op woensdag 14 april 2010 21:59 schreef Isdatzo het volgende:
En wat dacht je van deze?

http://vefmidlar.visir.is(...)af7-f2391380301e.asx

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Op woensdag 14 april 2010 21:59 schreef Isdatzo het volgende:
En wat dacht je van deze?

http://vefmidlar.visir.is(...)af7-f2391380301e.asx

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Op woensdag 14 april 2010 22:44 schreef Roel_Jewel het volgende:

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Wat een geweld

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Op woensdag 14 april 2010 16:19 schreef Isdatzo het volgende:
[ afbeelding ]

En deze huisjes staan ook niet bepaald strategisch .

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Op woensdag 14 april 2010 22:42 schreef Isdatzo het volgende:
Opslaan en dan openen does the trick.

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Vluchten geannuleerd door vulkaanuitbarsting IJsland

SCHIPHOL - Het luchtverkeer heeft last van een vulkaanuitbarsting woensdagochtend in IJsland. Tientallen vluchten van en naar Schiphol zijn donderdag geannuleerd wegens een aswolk boven Noord-Europa.


Dat heeft een woordvoerster van Luchtverkeersleiding Nederland gemeld.
Volgens de woordvoerster kan het aantal annuleringen nog oplopen. Het gaat vooral om vluchten naar Noord-Engeland, Schotland en Scandinavië.

Op de Britse vliegvelden zijn negentig procent van de vluchten geannuleerd, meldt BNR Nieuwsradio.

KLM
As van vulkanen kan ertoe leiden dat vliegtuigmotoren plotseling stilvallen. Dat gebeurde in 1989 met een vliegtuig van KLM, dat onderweg was van Schiphol naar Tokio. Bij Alaska vloog het toestel door een wolk van de vulkaan Mount Redoubt.
Het stof verstopte de vier motoren, die ineens uitvielen. De bemanning slaagde erin de motoren te herstarten. Enkele jaren eerder was een vliegtuig van British Airways in de problemen gekomen door een aswolk bij Indonesië. Ook toen kon de bemanning de motoren herstarten.