Dagrapport van gisteren:
quote:
Eruption in Eyjafjallajökull - Status Report: 16:00 GMT, 07 May 2010
Icelandic Meteorological Office and Institute of Earth Sciences, University of Iceland
Compiled by: Sigurlaug Hjaltadóttir, Rikke Pedersen, Björn Oddsson, Ólafur Freyr Gíslason, Guðrún Larsen, Benedikt G. Ófeigsson, Matthew J. Roberts, Bergthóra S. Thorbjarnardóttir.
Based on:
IMO seismic monitoring; IES-IMO GPS monitoring; IMO hydrological data; IMO weather radar measurements, MERIS satellite image; reports from sent through the IMO web site, information from commercial flights.
Eruption plume:
Height (a.s.l.): 7 km according to IMO weather radar measurements at 1155h. Commercial flight heading towards Keflavík at 15:18h: 20,000- 25,000ft (7-7.6 km).
Heading: Southeast
Colour: Colour: Dark at the bottom, otherwise light gray.
Tephra fallout: Considerable in Vík ashfall began at 21h last night; ashfall reaches to ~55-60 km from eruption site, midway through Mýrdalssandur.
Lightning: No detections today over the eruption site.
Noises: No reports
Meltwater:
During the last 24 hours there have been no flash floods from Gígjökull measured at Markarfljótsbrú. Electrical conductivity has been decreasing and daily fluctuations in discharge and water temperature have been observed. The electrical conductivity in Jökulsá á Sólheimasandi which has been traced to ash contamination from the glacier is still quite high. An increase in discharge has been observed in rivers in the area around Mýrdals- and Eyjafjallajökull due to higher ambient temperature.
Conditions at eruption site:
The ash plume is lower now than yesterday. The wind affects the plume and ashfall is less. The cinder cone continues to build up around the eruption vent in the ice cauldron. The lava flow to the north has been stagnant past two days.
Seismic tremor:
Tremor levels are low, comparable to yesterday and the period on 14 - 17 April.
Earthquakes:
Earthquakes are still being recorded at 5-13 km depth, but fewer than yesterday.
GPS deformation:
Measurements from around Eyjafjallajökull indicate no major net discplaceaments, suggesting a stabilization of the surface deformation since yesterday.
Other remarks:
Grainsize analysis of samples taken of ash that fell on May 3rd at 64 km distance from the eruption site shows that about 5 % of the ash is smaller than 10 micron (aerosols). This is a considerable decrease of fine particles compared to ash from April 15th (25% aerosols) sampled at a similar distance. The grain size analysis was carried out by Nýsköpunarmiðstöð Íslands.
Overall assessment:
Explosive activity seems to have decreased since yesterday. The ash plume does not rise as high into the air and is lighter in colour. Steam rises from the lava tongue under Gígjökull which is a sign that ice is melting in the tunnel, but to a much lesser degree than when the lava flow was at its peak. There are no signs that the eruption is ending.
Ik ben wel benieuwd naar die van vandaag.
http://www2.norvol.hi.is/page/ies_Eyjafjallajokull_eruptionHet lijkt er op dat de Eyjafjallajökull nog niet klaar is, ik hoop dat iedereen die wacht op mensen die moeten vliegen of zelf moeten vliegen snel duidelijkheid krijgen.
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Aswolk treft ook Portugal en Frankrijk
08-05-2010
BRUSSEL - De aswolk uit IJsland waait zaterdag niet alleen over het noorden van Spanje, maar ook Portugal en Zuid-Frankrijk kampen met problemen. Dat meldde de Europese luchtverkeersleider Eurocontrol. Luchthavens in het noorden van Portugal en Spanje en het zuiden van Frankrijk zijn gesloten of zullen de komende uren sluiten. "Erupties doen zich nog steeds voor en het gebied waar de as de lucht vervuild, breidt zich uit", aldus een verklaring van Eurocontrol.
In Spanje zijn inmiddels zeker vijftien luchthavens dicht. Deze blijven in elk geval tot het einde van de middag gesloten. Vluchten vanuit Nederland naar Noord-Amerika of Zuid-Europa moeten rekening houden met vertragingen.
(c) ANP
http://www.luchtvaartnieuws.nl/news/default.asp?cat=all&id=34808Hij blijft beven nu.
Lol, de wolk torent weer mooi boven de rest uit nu, het lijkt er op dat hij nog meer uitspuugt dan vanmiddag.
http://eldgos.mila.is/eyjafjallajokull-fra-hvolsvelli/