Zicht op Eyjafjallajökull met stratusbanden. Minder aktief.

Bericht van: Hans (Diemen) , 23-05-2010 00:16 

De vulkaan is minder actief geworden de laatste dagen.Dat blijkt uit de laatste rapporten uit IJsland van Ïcelandic Met Office, te vinden op http://en.vedur.is/earthquakes-and-volcanism/articles/nr/1884

Update on activityEruption in Eyjafjallajökull, Iceland
Assessment 22 May 2010 16:30
According to reconnaissance flight, the plume is estimated at 4km/14,000ft height (a.s.l.). The plume is lightgrey and grey, and a light easterly wind blows it to the west.

No reports of ashfall today; no lightning strikes have been detected since two days ago and there are no reports of noise from the eruption. Meltwater discharge from Gígjökull is small. The eruption is ongoing similar to yesterday with occasional explosions in the crater. Neither crater nor lava is visible due to clouds over the volcano.

About twenty earthquakes have been recorded since midnight, the majority at shallow depths. GPS deformation indicates subsidence of the volcano.

Details in a status report issued collectively by the Icelandic Meteorological Office and the Institute of Earth Sciences at 14:00.

Assessment 21 May 2010 20:45
Observation from inspection flight and other pilot reports show that the eruption plume is light grey, with a small amount of ash and the height is 3-3.5 km/10,000-12,000 ft (a.s.l.). Plume is blown towards northeast and later northwest by light southerly winds.

No reports of ashfall today. Reports from Neðri-Þverá and Hlíðarendakot in Fljótshlíð of bluish gas along the hillsides in some sort of clouds, smelling foul (causing headache when dark in colour).

Volcanic tremor levels have decreased since yesterday evening. However, they rose for two hours this morning, but have since continued to decrease. Over twenty earthquakes have been recorded since midnight, the majority at shallow depths.

The eruption has declined a great deal and the flow of magma into the crater can be roughly estimated as 5 tonnes/s, carried away by a plume that rises 1.5-2 km above the crater. No lava flowing.

The above is based on a status report issued collectively by the Icelandic Meteorological Office and the Institute of Earth Sciences at 19:00.

De laatste dagen was er weinig of niets te zien van de vulkaan als gevolg van veel bewolking. Zojuist lijkt er weer iets te zien van de vulkanische pluim. De wolken zijn veel opvallender en maken het een interessant plaatje. Het infrarood beeld helpt bij het maken van onderscheid. Het laatste, wat latere plaatje laat het ontbreken van een grote aspluim zoals een weekje terug mijn inziens zien.





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