Update for Grimsvötn Eruption, November 4, 2004


Photo by Fredrik Holm

Fourth day of the eruption from the Grimsvötn volcano, Iceland.

The morning reconnaissance flight around Grimsvötn volcano showed that the intensity of the eruption has decreased substantially.
A continous plume of white steam is seen rising from the crater. Bursts of phreatomagmatic explosions occurred with intervals. The explosions were sending jets of ash and fragmented ice approx. 1km up in the air. The bouyancy of the ash and steam column additionally lifted the plume up to a height of approx. 4km.

Today the ash fall was limited extending approx. 5km downwind in a southerly direction.

In cauldrons in the eastern part of the Grimsvötn caldera melt water could be seen flowing in an easterly direction out of the caldera (see map of the Grimsvötn Caldera at the homepage of Prof. Magnus Tumi Gudmundsson).



(1) Pictures from the morning of November 4, 2004

(2) Pictures from the morning of November 4, 2004

(3) Pictures from the morning of November 4, 2004

(4) Pictures from the morning of November 4, 2004

Pictures from the morning of November 2, 2004

Pictures from the afternoon of November 2, 2004

Picures by Alexander Jarosch from the afternoon of November 2, 2004.

Grimsvötn eruption update at the Icelandic Metrological Office (In Icelandic)

Satellite images of the plume from the Remote Sensing Research Group, Univ. of Bern, Switzerland

Images from MODIS Rapid Response Team at NASA GSFC