Wednesday, May 12, 2010

[Geology2] Eyjafjallajȍkull Update 5/12/2010



Series of small earthquakes shake Icelandic volcano


There were more than 40 small earthquakes at the Eyjafjallajökull volcano on Monday, beginning around 11:00 a.m., says a daily report from the Icelandic Meteorological Office and the Institute of Earth Sciences at the University of Iceland.

Most of them were between one and two on the Richter scale and were estimated to be between 11 and 12 miles below the surface.

This could be in part that because the background tremor, the rumbling of the volcano itself, is lower than last week, so smaller earthquakes that might previously not have been detected are being picked up.

The series of earthquakes indicates that magma is still flowing in to the volcano from the Earth's mantle. Presently, there are no indications that the eruption is about to end.

There was a slight increase in explosive activity Monday, resulting in a briefly higher ash plume. The eruption plume, which was light grey, reached 17,000 feet, at times shooting up to 20,000 feet. It headed southeast in low, level winds.

The Iceland National Guard did not do an over flight of the volcano, but observations from web cameras showed activity similar to Sunday. The volcano's crater is getting higher, its lava flow is low and not visible to the cameras.

In Iceland, ashfall was reported at Drangshlíð and Skarðshlíð almost continuously beginning Sunday at 3 p.m.. The ash was rather coarse, said farmers on whose land it fell.

By Elizabeth Weise

Source

--
(Gars O'Higgins Station penguins)
http://wiinterrr.blogspot.com/
http://penguinnewstoday.blogspot.com/
http://penguinology.blogspot.com/
(Twilight Saga commentary)
http://throughgoldeneyes.blogspot.com/
(Coming soon---Volcano Watch!)

>^,,^<  


__._,_.___


Your email settings: Individual Email|Traditional
Change settings via the Web (Yahoo! ID required)
Change settings via email: Switch delivery to Daily Digest | Switch to Fully Featured
Visit Your Group | Yahoo! Groups Terms of Use | Unsubscribe

__,_._,___

No comments:

Post a Comment