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#1 2015-02-28 13:12:17

Iceland Eruptions
From: The Netherlands
Registered: 2014-12-18
Posts: 372

New Factsheet | February 27, 2015

For the last few days there has been very poor visibility of the eruption in Holuhraun due to bad weather. Satellite images do confirm that the eruption is still on going.   

  • Seismic activity in Bárðarbunga continues to diminish. The strongest earthquake since Tuesday was measured M2.5 yesterday, 26th of February, at 01:59. Other earthquakes were all smaller then magnitudes M2.0. In total around 50 earthquakes were detected around the caldera since last Tuesday. No earthquake stronger than magnitude M3.0 has been detected since February 21st and no earthquake over M5.0 since January 8th.

  • Around 60 earthquakes were detected in the dyke during the same period. The strongest ones were measured M1.4 and M1.3. It is worth to mention that bad weather does affect the number of small earthquakes detected.

  • The rate of the subsidence in Bárðarbunga caldera last week was about 5 cm per day in light of the ice subsidence into the caldera.

  • GPS measurements near Vatnajökull glacier show continuing slow deflation towards Bárðarbunga, indicating a flow of magma from under the volcano.

  • Five earthquakes were detected around Tungnafellsjökul glacier, the strongest was magnitude M1.7. About 25 earthquakes were detected around Askja and Herðubreið since last Tuesday. The strongest, magnitude M2.3 was detected in Askja yesterday at 05:42.

  • Automatic gas detector measured S02 concentration on 500 µgr/m³ in Blönduós yesterday.

Factsheet here (PDF)

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