So far, lava has reached the surface only on
land that is not covered by ice, whereas an eruption under an
ice cap may be explosive and result in an ash cloud that could
under certain circumstances disrupt aviation.
"It hasn't reached the glacier yet and hopefully it won't, but
it's not unlikely that it will," said Einar Heidarsson, a
spokesman for Iceland's Civil Protection Department.
In 2010, a cloud of abrasive ash from the Eyjafjallajokull
volcano, in a different region of Iceland, closed much of
Europe's air space for six days after an eruption under the ice
cap. The new fissure is about 4 km(2.5 miles) from the glacier.
Scientists were now inspecting the new fissure from the air and
authorities were awaiting their findings, Heidarsson said.
The ash warning for aviation still stood at orange, the
second-highest level on a five-color scale indicating a risk of
ash that could hinder air traffic, after a brief hike to the top
level - red - on Sunday.
"Of course, as soon as it starts to erupt under the glacier, the
beautiful lava you see now could possibly turn into ash, but at
the moment there is no ash eruption going on," Heidarsson said.
(Reporting by Robert Robertsson and Sven Nordenstam; editing by
Ralph Boulton)
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