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Holohraun Five Years Later

A guest post from Salting I visited Iceland many times in the past to meet friends and take a day off on my way between Europa and US. In summer 2011 I made an extra-long stop and visited a glacier to better understand the forces that shaped the coastline around my Swedish home island. Trekking…

Was Puyehue Cordón-Caulle really a VEI-5?

That the question even exist is a bit of an oddity in modern volcanology, after all we have known amply how to take ejecta-depth measurements to create Isopac-maps since 1956, more about that below. The reason that this question has prevailed is that there are anomalies in the numbers proven for the eruption, compared to…

The Forgotten Volcano

A few days ago, I was sipping on a rum and coke as I was flying over Kilimanjaro and the great continental divide ripping East Africa away from the embrace of the rest of Africa. As I did that, I got to ponder the other major tectonic powerhouse, Iceland. People tend to forget or underestimate…

Water, Grimsvötn and Stromboli

After a couple of rather hectic volcanic weeks in the world of volcanoes I thought I would write a little something about two of these events. Namely Stromboli and Grimsvötn, the reason I am cherry picking those two is that they have a common theme, water.   Stromboli Unless you have been to Stromboli you…

Greip update (June 2019)

After a wonderful series on Krakatau by Albert, a mysterious island by Carl and a seismic “Intermezzo” by Lurking, I have decided to take things back to Iceland for a while. Most of us know Greip by now, and we are going to take another look at it, from a more seismic perspective with some…

Getting to Greíps with things

In this article I will pick up with the questions regarding age, GPS-tracks and the general setting. Knowing me it is quite likely that I will meander out into wild tangents as I go. Time to Greíp my pen.   The age of Greíp For a volcano that has not erupted (we will get back…

Greip Expectations

  Part 1 of a Greip Series This week, under the rumblings of Torfajökull, we return to one of our favourite areas within Vatnajökull that is yet to show it’s true hand. Or has it already and is there evidence to support that? Due to some recent activity, Carl has been getting increasingly excited in…

Unrest at Torfajökull

  This is just a short piece about mounting unrest along the extension of the Veidivötn Fissure Swarm as it is running through the Torfajökull volcano. Torfajökull has two known magma reservoirs, one on the south east side that is mainly andesite-basalt, and a rhyolite chamber towards the south-west. The current lineament is having the…

Greip: A prequel on instrumentation

This is both an informal start of our series about a promising central proto-volcano, and a story about the problems of sifting through the bewildering number of signals that the instruments yield for us to peruse. Let me start out in the stars. A friend of mine work with SETI, the search for extra-terrestrial signals.…

On the importance of Deep Quacks

Back in early 2011 I was sitting down for a late light evening read of “Lower-crustal earthquakes caused by magma movement beneath Askja volcano on the north Icelandic rift” by Soosalu et al. As I read angels started to sing a glorious hymn as I had an epiphany and my view on how volcanoes operate…