Around 450 earthquakes have been detected since midnight 30. August until 07:00. The vast majority in the northern part of the dike intrusion, see maps.

The presently active part of the dike intrusion extends from about 4 km south of the glacier margin of Dyngjujökull to the location of yesterday's fissure eruption. Only few small earthquakes have been located north of the eruption site and there is presently no sign of northwards migration of the intrusion. Strongest events in this area were M2.7 at 03:01 and M2.8 at 06:19.

Several events have been detected on the caldera rim of Bárðarbunga, strongest was a M5.4 earthquake which occurred at 07:03 at the southern rim of Bárðarbunga caldera. Several events of similar size have occurred around the caldera rim in recent days. They are interpreted as being related to subsidence of the volcano due to volume decrease in the magma chamber beneath.

There were also M4.5 at 02:35 and M4.2 at 06:18, both on the northern rim. Few small events were detected around Askja volcano.

Summarizing, no significant changes in seismic activity have been observed.

Topic

Bárðarbunga and Holuhraun

Earthquake in Bárðarbunga this morning

• Magnitude 4.4 quake strikes Iceland’s Bárðarbunga
• Size 4.2 quake hits Iceland’s Bárðarbunga volcano
• Bárðarbunga quakes “not uncommon”
• Bárðarbunga continues to rumble

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