Image from Wikimedia. Aerial picture of Katla.

What’s going on at Katla? Part III

Trying to make sense of complex phenomenae In the first two instalments, we had a look at Katla as she appears through media and what she has done historically. It is now time to have a look at what’s going on and try to paint a coherent picture of what she actually is, is up…

Photograph by Zanthia. On the picture one can see Mount Herðubreið. Herðubreið (Broad Sholder) is a tabletop mountain, or in another word, a Thuya.

Herðubreið – Renewed activity at Askja

Yesterday an earthquake swarm started with a 3.4M earthquake at Herðubreið. So far the swarm has had 15 earthquakes above 2M, among those 3 where at Askja proper. This swarm as well as the previous ones at Herðubreið have been to the west of the volcano. And those earthquake swarms have been deemed to be lateral intrusions…

Picture copyright by Magnus Lundgren. Ever been dreaming about diving from one continent to another? Thanks to Magnus stunning picture we can see how it is can be done on Iceland. On one side we see America, on the other Europe. Only in Icelands Thingvellir Fault Zone is it this easy.

Earthquakes – What’s the fuzz?

What is an earthquake? Perhaps the question should have been; when does an earthquake start? For me as a physicist what we normally perceive as an earthquake is just the boring business end of a rather fascinating process, because the earthquake actually starts far back in time. What we normally see and feel as an…