[ACTUEEL] Vulkanen IJsland #20: Uitbarsting Bardarbunga

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Op zondag 21 september 2014 18:01 schreef aloa het volgende:
En recent een 4.2 beving!

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http://www.ijsland-enzo.n(...)spagina.asp?tabsel=0

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Iceland grows as Bardarbunga volcano continues to spew lava

VATNAJöKULL, Iceland, Sept. 22 (UPI) -- Iceland's Bardarbunga volcano is a prolific producer of lava, and thanks to its impressive magmatic output, the island nation is growing.
The activity within the Bardarbunga volcanic system is due to the fact that two massive tectonic plates, the Eurasian Plate and the North American Plate, are drifting apart. As they move away from each other, magma underneath Barbarbunga is rising up to fill the gap and helping to grow the size of the country.

The Bardarbunga lava field now stretches more that 14 square miles in size. "That corresponds about to the size of Manhattan," Rikke Pedersen, a researcher with the Nordic Volcanological Center at the University of Iceland, recently told NPR.

You can watch Iceland's growing pains in real time, as two cameras remain pointed at Bardarbunga -- the live feeds are here and here.

In addition to the lava flow, the shifting plates have also caused an extraordinary number of earthquakes. Iceland officials say there have been 20,000 small earthquakes recorded in the last month. It's not clear when all the seismic activity will die down.

Though officials say the last couple of weeks have been slightly quieter than the two before, officials wrote in a recent press release that there "is no significant change in the flow of lava and it is still too soon to say if the volcanic eruption is beginning to fade out."

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Bardarbunga volcano update: Eruption continues with steady and large lava output rate

The fissure eruption in Holuhraun continues with similar intensity as during the past days and shows no sign of stopping soon. The latest satellite images indicate that the lava now flows into two main branches, one (the older one) to the north and a new one to the east.
Astonishing lava volumes:

The lava flows erupted since the beginning cover around 37 square km and comprise a total volume of 0.4-0.6 cubic kilometers. If compared to an explosive eruption (for which the VEI scale was designed) using the Volcanic Explosivity Index (VEI) scale, the eruption has already reached the category VEI 5. It has so far erupted about the same volume of magma as the 1980 Mt. St. Helens eruption.

The discharge rate was estimated to 250-350 cubic meters per second. This corresponds to a cube measuring approx. 300 m on its sides. It would be enough to fill a soccer field with a pile 2-3 km tall of lava!

The subsidence of the Bardarbunga caldera continues with same rate as before, approx. 50 cm each day. It has now subsided by almost 30 meters in total.

twitter:

gislilundi twitterde op dinsdag 23-09-2014 om 21:04:21 Lava, a lot of it! @ruvfrettir @laraomars #Bardarbunga http://t.co/UOEvIyyQDw reageer retweet

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Op maandag 22 september 2014 10:09 schreef bwt het volgende:
En het is een aardig overzicht van de bevingen
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twitter:

Bromotengger twitterde op maandag 22-09-2014 om 14:48:42 Map with the earthquakes over magnitude 3 at #Bardarbunga186 since august 16th #Iceland http://t.co/jS0piqkRA5 reageer retweet

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Magnitude M 4.8
Region ICELAND
Date time 2014-09-24 08:14:38.9 UTC
Location 64.63 N ; 17.70 W
Depth 10 km
Distances 210 km E of Reykjavík, Iceland / pop: 113,906 / local time: 08:14:38.9 2014-09-24
119 km S of Akureyri / pop: 16,563 / local time: 08:14:00.0 2014-09-24

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Op woensdag 24 september 2014 09:24 schreef aloa het volgende:
De vervuiling door de SO2-gassen zou volgens het Duitse blad Der Spiegel, nu meetbaar zijn in Duitsland, dus ook in Nederland, echter niet in alarmerende hoeveelheden.

http://www.ijsland-enzo.n(...)spagina.asp?tabsel=0

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Op dinsdag 23 september 2014 22:07 schreef bwt het volgende:

twitter:

Sim0nRedfern twitterde op dinsdag 23-09-2014 om 17:31:56 Volume of #Bardarbunga caledera drop is 0.6 cubic km. Lava field covers 37 square km & is 0.4-0.6 cubic km in volume. Equal? Continues... reageer retweet