Good morning to you all, here is the official report from 15 juni.
Eruption in Eyjafjallajökull - Status Report: 17:00 GMT, 15 June 2010
Icelandic Meteorological Office and Institute of Earth Sciences, University of Iceland
Compiled by: Bergthóra S. Thorbjarnardóttir, Magnús Tumi Guðumundsson, Sigrún Hreinsdóttir and Gunnar Sigurðsson.
Based on: IMO seismic monitoring; IES-IMO GPS monitoring; IMO hydrological data; web camera; lightning detection system and flights over the eruption
site 11 and 14 June.
Height (a.s.l.): Have been observed at over a hundred meters.
Tephra fallout: None.
Lightning: None were measured on the UK Met Office's system.
Noises: No reports
Low discharge from Gígjökull.
No mudfloods in the past few days.
Conditions at eruption site:
At the eastern, southern and western sides of the crater lake is a wall of ice. On the northern side a tephra wall rises 20 meters above the water.
The ice walls at the southwestern corner of the crater are melting, i.e. at the site of the vent that was active 4 – 6 June. The rate of melting is
assumed to be about one cuber meter per second.
Low tremor level. Pulses are observed off and on.
A few small, shallow earthquakes have been recorded beneath the Eyjafjallajökull summit in the last weeks. Thirteen microearthquakes were recorded in
the Mýrdalsjökull caldera from 11 to 14 June, most at a shallow depth.
The seismic activity beneath Mýrdalsjökull glacier does not appear to be related to inflation of the area. No significant vertical deformation has
been observed at GPS stations at or around the glacier. However, a station at the northeastern caldera rim (AUST), moved about three centimeters
towards the southwest from the 9th to the 13th of June, inward to the caldera.
The level of water in the crater lake only rose about 1 – 2 meters over the weekend. Several days or weeks are therefore likely to pass before the
crater has filled with water, and up to months if the melting slows down. It is important that the water level be checked regularly. The water volume
is now less than 0.5 million cubic meters. If the water level rises 20 meters, the volume will be 3 million cubic meters. The resulting flood would
flow to the north, down the Gígjökull valley glacier, and could reach a maximum of 1500-2000 cubic meters per second
[edit on 16-6-2010 by ni91ck]