Strong earthquake swarm in Bárðarbunga volcano

Yesterday (30-January-2018) Bárðarbunga volcano had strongest earthquake since 27-October-2017. That earthquake had the magnitude of Mw4,9 (at 19:24 UTC). Two earlier earthquakes had happened but they had smaller magnitude of 3,7 (at 17:47 UTC) and magnitude 3,8 (at 18:00 UTC).

The earthquake swarm in Bárðarbunga volcano (green stars). Copyright of this image belongs to Icelandic Met Office.

Earthquake activity seems to have stopped with last earthquake happening at 21:29 UTC. There is no change in harmonic tremor from Bárðarbunga volcano and that means no eruption. The north-east part of the Bárðarbunga volcano seems to be getting unstable with each earthquake swarm that happens. Magnitude of earthquakes happening has also increased but it is now longer between earthquake swarm. The time between earthquake swarms now can go up to several weeks. Soon after this earthquake activity started in September-2015 this type of activity happened weekly.


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8 Responses to Strong earthquake swarm in Bárðarbunga volcano

  1. Emmi says:

    There is still activity in the lowpass 0.7 Hz range on many stations after these quakes Urðarháls and Austmannsbunga
    is this unusual?

    • Mark Redgwell says:

      The 0.2 the small Quakes look like Rock Breaking from a BBC Horizon show i watched some years ago

  2. Hi Jón

    So the 4.7 earthquakes at Bárðarbungu straddling 26th and 27th October were eventually upgraded to 4.9? I must have missed something because I did not see this.

  3. WurzelDave says:

    Does anyone else think the next Bard eruption will be started by a large quake?

  4. Adrian says:

    The quake M4.9 was far to the north of the volcano and the glacier. It was connected to Bardarbunga?

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