ArHo_holuhraun-20150304

Bárðarbunga, the End of the Eruption or…?

Fig 1. From Holuhraun lava field 4 March 2015. The central part of the crater Baugur (Circle) on March 4th, view to the North along the crater. The encrusted surface of the lava lake has collapsed. Its remains are now a course, black rubble at the bottom of the crater. Small vents of blueish gas…

Beautiful Lake Taupo, New Zealand. The only hint of its volcanic origin are the distant volcanoes on the horizon, built at the edges of the ring fault system. (Provenance unknown)

When Is a Caldera a Caldera?

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…

Etna

Etna’s paroxysm overview

Since the beginning of this year, Inge B. has kept track of all of Etna’s activity this year and has submitted a summary to keep track of all this for everyone. By now, we have seen a dozen of paroxysms and several other instances of activity at various craters, so it is easy to see…

2rh1cuh

Activity update around the world

Etna has had its ‘paroxysm’ #many. Every eruption is spectacular, but when they are so frequent it gets easier to focus on what is different with every eruption. Bruce Stout and Newby noted that the activity lasted much longer than previously in this series of paroxysms. Why this is, is off course a mystery, but…