Gunung Kelud – Or who poked a whole in the Volcano?

Volcano mitigation normally means monitoring and evacuation; very rarely does it involve altering a volcano to make it less deadly. There are many and good reasons for not doing any alterations in a volcano, but in some cases it is a good idea. Gunung Kelud – A brief summary The relatively small Indonesian volcano of…

Volcanic Hazards: Lahars

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…

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…

Volcanoes silly season!

Mexicos Popocatepetl started it’s long awaited new eruptive phase after a dome extrusion. As I wrote a week ago the eruption was expected to be small, and so was the case. Everything points to a VEI-1 or VEI-2 eruption. The only real danger currently is lahars, but since the glacier ontop of the volcano has diminished…