Guest post by Tallis. In my previous piece, I went over the process of large caldera forming eruptions and the abundant noise that they would produce but a comment by cbuso5 caught my attention and interest. I have one slight disagreement. I’m not necessarily sure that the signs before a super eruption would be particularly…
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…
Long time no sea. 😀 Actually, I haven’t gone anywhere and I apologize for the sailor joke. What I really mean is that I haven’t done much other than lurk in and around the comments section. My last actual post was a rehash of an ancient topic that I had covered some time ago…
It is nice to live on the crust. It gives a degree of stability which the rest of the Earth lacks. It is not perfect: the quiet can be punctuated by earthquakes or volcanoes, and lacking those there is still the off-chance of a landslip or flood. The atmosphere may also interfere with our lives.…
The wonder of water The tell-tale sign of the suspension of the laws of physics is someone seen walking on water. The suspension is always temporary – as soon as a second person tries to follow, the laws of physics are re-instated and the person looking for the ‘me too’ experience instead encounters full immersion.…
I grew up in a news publishing family. This means that for me freedom of speech and, the right to freely discuss topics is a given. But, at the same time as it is a given and necessary right, it comes with responsibilities. In the end the rights and responsibilities go hand in hand with…
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…
Post by Geolurking, based on a repost I have been tasked to revisit something I covered years ago. And update it with a bit of fresh info. The original publish date was 20 Feb 2012. The first thing I need to cover, mainly in order to bring every one up to speed… is the compass rose.…
If there ever was a patron saint of Volcanocafé it would be the author Jules Verne. When he was not inventing cadres of literary genres, he was quite obsessed with volcanoes. When he was not writing he spent his time reading about volcanoes (and other things scientific). And quite often he combined his interests of…
In Part 1 and Part II we went over the current state of Krakatau and its history over the 300 years before the Big One. Now it is time to find out what caused the Big Bang, whether it is a recurrent offence, and to try our hand at the big question: why is such…
In part I, we discussed the geology and current state of Krakatau. Now it is time to look at events before the Big Eruption. Was it hiding in the shadows, or did it make its intentions clear to all? History For centuries before its destruction, Krakatau was a familiar landmark. At least some of the…
All eruptions have history. Volcanoes may sometimes appear to erupt out of the blue; the mountain may not even have been recognized as a volcano, before blowing up. But the unexpectedness stems from our lack of knowledge. In the case of monogenetic volcanoes, which only erupt once, the volcanologist will recognize from the cones in…
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…
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…
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…
