Jump to content
Snow?
Local
Radar
Cold?

Mondy

Members
  • Posts

    4,936
  • Joined

  • Last visited

  • Days Won

    2

Posts posted by Mondy

  1. Assessment - 15 May 2010 17:25

    The eruption plume is gray and the height is mainly ~ 6 - 7 km / 21,000 - 24,000 ft, occasionally reaching 8 km / 27,000 ft. It is heading southwest and later south.

    Ashfall has been reported south of Eyjafjallajökull and ashdrift southeast of Eyjafjallajökull.

    An earthquake swarm started beneath Eyjafjallajökull just before midnight. In the period between 23:54 and 02:45, more than thirty earthquakes were located at depth greater than 20 km and magnitude less than Ml 2. A few more earthquakes were detected until morning.

    No major changes are seen in the activity, the ash cloud is slightly higher than yesterday. Presently there are no indications that the eruption is about to end.

    Details in status report issued collectively by the Icelandic Meteorological Office and the Institute of Earth Sciences at 15:00.

    http://en.vedur.is/earthquakes-and-volcanism/articles/nr/1884

  2. Since Monday 3 May, increased earthquake activity beneath Eyjafjallajökull has been recorded. Precise locations of the earthquakes show that their source is at first very deep, at about 23 km depth, but then migrates upwards. This strongly indicates that “new” magma is intruding into the magma conduit and pushing on the over-lying magma, causing a difference in pressure at the surface. It is therefore anticipated that the eruption will continue at full force in the next days.

    Significant changes in horizontal movement at GPS stations around Eyjafjallajökull have been observed in the last 48 hours. Renewed northward displacement is seen at stations BAS2 and STE2, located just north of the ice cap. To the south, westward movement is apparent at THEY (see figure below), while station FIM2 - located further east - shows eastward movement.

    The distribution of earthquake activity in the magma conduit could also indicate the location of the magma chamber that has fuelled the eruption since 14 April. It is considered to be at a depth of approx. 3-5 kilometers, in an area where no earthquakes are detected.

    http://en.vedur.is/earthquakes-and-volcanism/articles/nr/1884

×
×
  • Create New...