It does not take long for a newcomer to volcano-watching, if we are to call our hobby that, to come across the term “caldera”, cauldron. The term is very loosely used to describe large volcanic depressions ranging from volcanic craters a few hundred metres in diameter up to the huge depressions left behind by the…
One of the more persistent reader questions is “What will/can happen now?”. I am pretty convinced that this question is what occupies most people on the inside of IMO, Allmannavarnir and NordVulk as well. The words of several eminent vulcanologists, that this episode is unprecedented, indicate that this may indeed be so. But in order…
Lately the internet has been filled with the usual doom and gloom about Katla. And since there has actually been a bit of unusual behavior I find it merited to actually write about the volcano. Background on Katla The volcano resides under the Myrdalsjökull glacier and it is one of the larger volcanoes on Iceland.…
While we are waiting for the expected fiery occurrence of Etnas Twentieth Paroxysm we can warm ourselves by watching expectantly the cams for Etna or go on a detour to Sakurajima. Or why not delve into the mysterious tremor encircling 20 percent of Iceland starting somewhere between Hekla and Katla reaching all the way around…
There are several factors that are monitored in an active volcano. For most Icelandic volcanoes the things that are monitored and are publicly available are tremor, earthquakes and GPS. In the case of Hekla there is also available mountain strain data from borehole strainmeters. For some volcanoes there are also periodic gas measurements taken and…
VolcanoCafé 
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