Why is a volcano potentially dangerous? Lets take a closer look on the different volcanic hazards. Lets start with Lahars. They occurred at Mount Saint Helens, Pinatubo and at Eyjafjallajökull too. What is a lahar: A lahar is a mixture of volcanic debris with water. They can happen when a volcano has a glacier or…
Deep Space Live 26.9.2013 Ars Electronica Center by Birgit Hartinger The most dangerous volcanoes of the world, presented in the series „In Touch with the Earth“ in the AEC. While preparing for this speech I came to notice that people, especially younger folks do not really know what a volcano is and even less what…
Located some 60 km NNW of Naples in the Campanian province of Caserta lies the medieval town of Roccamonfina, cradling the slopes of an old stratovolcano, considered extinct since its last eruption was at least 50,000 years ago. Roccamonfina is famous for its cuisine based on chestnuts and funghi porcini; Penny Buns or Boletus Edulis.…
“Popocatépetl provides an excellent example of how the perception of risk is strongly influenced by the recent eruptive history and not by a full geological record, particularly among the people dwelling in the endangered areas and the media.” I think the above is probably a good quote that describes one of the biggest issues that…
Lahars are called jökulhlaups in Iceland, or mudflows in other regions of the world. What are they? A lahar is a combination of water with volcanic ash and lots of other debris. The necesarry water can come out of many sources: Glaciers are one source: IngeB wrote a really nice post on Icelandic glacier runs. When…
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