Posted on by Jón Frímann

Earthquakes between Grímsfjall and Bárðarbunga volcano. Earthquake swarm in Krísuvík volcano

Since Week 52 in the year 2010 there have been strange earthquakes between Bárðarbunga volcano and Grímsfjall volcano. It is hard to know exactly what this means. But it is clear that tension is rising fast in Grímsfjall volcano, as is evidence by the ML4.2 and ML3.5 earthquakes in Grímsfjall volcano few days ago. But this might be something, or this might simply be nothing at all. Only time is going to tell us what this means.

Far as I know, nothing like this was recorded before the Gjálp eruption (SIL earthquake data from 1996) between Grímsfjall volcano and Bárðarbunga volcano in the year 1996. But it is a important factor that the SIL network was a lot smaller back in those days.

Krísuvík volcano

This morning there has been a micro-earthquake swarm in Krísuvík volcano. The largest earthquakes have gone up to ML2.0 (automatic SIL data), with the focal depth of ~4 km. So far around 20 earthquakes have been recorded by the SIL system that Icelandic Met Office runs. This morning the earthquake swarm has quieted down a bit. But it is hard to know if it is over or not. But this area of Krísuvík volcano has been having a lot of micro-earthquakes swarms over the past few weeks. This has been followed by a uplift in the volcano (inflation). But that did start early last year after a short period of deflation.

Other then this, it remains quiet in Iceland volcano and earthquake wise.

11 Replies to “Earthquakes between Grímsfjall and Bárðarbunga volcano. Earthquake swarm in Krísuvík volcano”

    2. Well, Grimsvotn is a fairly safe volcano anyway. Hopefully it might give us a show without hurting anyone.

  2. @Jón, @Fireman:
    Thanks for the post/update.
    Hmmm… I think we should all watch this carefully.

  3. i know nothing but i love reading about Iceland’s doings.
    i think Krýsuvík is a very scary volcano building… but i’m free to think that because i’m only a civilian…not an official. Interesting Island Iceland.
    Best!motsfo

    1. Oh, MotsFo, I enjoy so much your comments – they simply make me smile! 🙂
      By the way, there is some discussion over EB about Kilauea which is within your field of “expertise”. Maybe you should take a look.
      Thanks for you being there! 🙂
      Best
      Renato

  4. What is rumbling quietly 5-8km N/NE of Geldinganes? Is there anything there which could be bad news for Reykjavik?

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