Top off Hekla. Photograph from Trecking in Iceland.

Hekla and the Global Positioning System

There are occasions when you as an expert in the field write something short and to the point and you expect everyone else to be able to follow you. As you find out that people well and truly did not follow you it is very important to remember that it was you as an expert…

Fig.1	 The dead of Herculaneum, burnt to death by 800-centigree hot pyroclastic flows from Vesuvius AD 79 (O Louis Mazzatenta, National Geographic)

The Decade Volcano Programme

The volcanic eruptions of Mount St Helens in 1980 and Nevado del Ruiz in 1985 made the general public aware of the dangers of co-existing with a large and potentially lethal volcano. It doesn’t take much imagination to see the possibilities of a lateral St Helens-type blast on a population of a great city as…

Photograph from Wikimedia Commons. The Somma caldera of Mt Aso in Japan.

Lost Weekend…

How to kill a weekend. As some of you have observed, last week I asked for anyone running across a caldera size and eruption volume to give me a quick shout here on the forums. Ostensibly, I was going to compile a spreadsheet in order to look at Hagstrum’s hotspot list compared to large caldera…