Hekla Volcano-Iceland

<objecttower of ash was as high as 6.8 miles.
width="480" height="385" codebase=" <embed"The situation is definitely better than it was particularly
type="application/x-shockwave-flash" width="480"on Saturday, which was a difficult day for us due to
height="385" src=" allowscriptaccess="always"heavy ash fall just south of the volcano," said Urdur
allowfullscreen="true"></embed> </object>Gudmundsdottir, a spokeswoman at the foreign
<!--more-->ministry.
Iceland has a high concentration of active volcanoesBut Gudmundsdottir was careful to avoid saying the
due to unique geological conditions. The island hasworst was over for the island of 320,000 -- and for
about 130 volcanic mountains, of which 18 havethe tens of thousands of people stranded at airports
erupted since the settlement of Iceland in 874 AD.for the past five days.
Over the past 500 years, Iceland's volcanoes have"As you know, things are changing very quickly," she
erupted a third of the total global lava output.[1]said.
Although the Laki eruption in 1783 had the largestAn official at the Meteorological Office said ash
eruption of lava in the last 500 years, the Eldgjáproduction had fallen sharply and the nature of the
eruption of 934 AD and other Holocene eruptionseruption appeared to be changing.
were even larger."Our web cameras show that there is not much ash
Geologists explain this high concentration of volcanicbut mostly steam now," said Hjorleifur Sveinbjornsson,
activity as being due to a combination of the island'sa geologist at the Meteorological Office. "The color of
position on the Mid-Atlantic Ridge and a volcanicthe steam is brown but also quite white so it is more
hotspot underneath the island. The island sits astridelike water vaporizing."
the boundary between the Eurasian and NorthThere was still a risk, however, that molten rock could
American Plates, and most volcanic activity iscreate new pathways for water to run into the crater,
concentrated along the plate boundary, which runscausing more explosions and a higher level of ash
across the island from the south-west to theproduction, he said.
north-east of the island. Some volcanic activity occursScientists flying above the volcano told the Met Office
offshore, especially off the southern coast. Thislava had burst from the crater and onto the
includes wholly submerged submarine volcanoes andEyjafjallajokull glacier that sits atop the volcano. The
even newly formed volcanic islands such as Surtseyglacier, about 75 miles southeast of Reykjavik, is
and Jólnir.normally a popular hiking ground.
The most recent[update] volcanic eruption in IcelandA reporter flying overhead in a helicopter told state
was that of Eyjafjallajökull, which started on April 14,radio the volcano was spitting chunks of lava as big as
2010. The Eyjafjallajökull eruption closely followed ana jeep.
eruption in Fimmvörðuháls, which had erupted onThe volcano near Eyjafjallajoekull glacier began to
March 20, temporarily quiesced by April 12, and thenerupt just after midnight, sending lava a hundred
erupted with a large ash plume (due to magma comingmetres high.
out under ice) on April 15. The ash cloud was significantIcelandic airspace has been closed, flights diverted and
enough to shut down airports across over 20roads closed. The eruption was about 120km (75
European countries, many of which remain closed asmiles) east of the capital, Reykjavik.
of April 19.About 500 people were moved from the area, a civil
Millions of tons of ash from a volcano in Iceland thatprotection officer said.
have grounded planes across Europe is traveling"We estimate that no-one is in danger in the area, but
towards North America, government officials report.we have started an evacuation plan and between 500
The latest satellite projections from the U.K.'s Metand 600 people are being evacuated," Sigurgeir
Office, which monitors volcanic eruptions as part of aGudmundsson of the Icelandic civil protections
global network of Ash Advisory Centers, show thedepartment told the Agence France-Presse news
ash cloud already reaching as far as Newfoundland,agency.
explained Bob Syvret, a forecaster for the agency.The area is sparsely populated, but the knock-on
"The latest graphics that we've issued suggest thateffects from the eruption have been considerable.
the tail end of the plume might just get into the far eastA state of emergency is in force in southern Iceland
of the Newfoundland area," he toldand transport connections have been severely
But breathe easier, travellers: "It doesn't look a risk fordisrupted, including the main east-west road.
North America" at this point, said Syvret, adding that"Ash has already begun to fall in Fljotshlid and people in
the cloud would "probably stop around thethe surrounding area have reported seeing bright lights
Newfoundland area, and then move north intoemanating from the glacier," RUV public radio said on
Greenland."its website.
The National Oceanic and Atmospheric Administration"It was a bit scary, but still amazing to see," Katrin
confirmed the report from the Met Office, noting thatMoller Eiriksdottir, who lives in Fljotshlid, told the BBC
the Met's projections "do show an extensionNews website.
westward across the North Atlantic.""The ash had started falling and we couldn't leave the
Authorities evacuated hundreds of people after thecar."
fifth largest volcano in Iceland erupted beneath aThree Icelandair flights, bound for Reykjavik from the
glacier.United States, were ordered to return to Boston, RUV
But Jeff Osiensky, NOAA's volcanic ash programradio reported.
manager, explained that the projected regions don'tDomestic flights were suspended indefinitely, but some
denote ash clouds hovering over the country. Theinternational flights were scheduled to depart on
maps are advisory areas primarily based on models,Sunday.
he said, and discussions with the Canadian Met OfficeThere had initially been fears that the volcano could
confirmed his suspicions.cause flooding, as it causes ice to melt on the glacier
"There's no indication of volcanic ash anywhere nearabove it, but that scenario appears to have been
Newfoundland. No observational type data to supportavoided.
that right now."However, it could cause more activity nearby,
Up to 63,000 flights have been cancelled in Europe duescientists say.
to the volcanic eruption at Iceland's Eyjafjallajökull"This was a rather small and peaceful eruption but we
volcano, which has spewed dust and ash across theare concerned that it could trigger an eruption at the
country at a tremendous rate. Within the first 72 hoursnearby Katla volcano, a vicious volcano that could
of the eruption, Iceland's Institute of Earth Sciencescause both local and global damage," said Pall
reported the average discharge rate of ash at 750Einarsson, a geophysicist at the University of Iceland's
tons per second -- a rate that could fill YankeeInstitute of Earth Science, Associated Press news
Stadium every few seconds.agency reported.
Syvret explained that it was difficult to accuratelyAs the eruption is taking place in an area that is
measure the volume of ash in the air, but nonethelessrelatively ice free, there is little chance of a destructive
believed that the situation shouldn't pose a threat toglacier burst like the one that washed away part of
American airports.the east-west highway four years ago, after an
"It shouldn't get any worse," he tolderuption under the vast Vattnajoekull glacier.
A representative for the FAA explained that theIceland lies on the Mid-Atlantic Ridge, the highly volatile
administration hadn't issued any formal statements yet,boundary between the Eurasian and North American
but were watching the situation.continental plates, with quakes and eruptions.
Scientists noted Monday morning that the ash plumeThe last volcanic eruption in the Eyjafjallajoekull area
rising above Iceland's erupting volcano was nowoccurred in 1821.
reaching a height of about 1.2 miles. Last week, the