GeoLog

Natural Hazards

Following today’s earthquake in Sumatra online

This blogpost is a round-up of potentially useful weblinks to information about the earthquake off the west coast of northern Sumatra of 11 April 2012. The links provided here are external and do not reflect the opinions of the European Geosciences Union. Regarding the earthquake, the US Geological Survey’s  (USGS) Earthquake Harzard Program homepage features seismic activity maps and a summ ...[Read More]

Imaggeo on Mondays: Zurich lit by lightning

In Zurich, Switzerland, June is often the wettest month of the year. Summer thunderstorms that give clouds a purple-grey colour and bright up the skies with strong lightning bolts are common place. This picture, taken by Ryan Teuling from Wageningen University in the Netherlands, captures one of these bolts, lighting up the centre of the city.Teuling took this photo in June 2008 when he worked at ...[Read More]

Imaggeo on Mondays: Volcanic twilight

Mount Etna, located in the east coast of Sicily in Italy, is one of the most active volcanos in the world and is home to spectacular eruptions. This photo, taken by Robin Campion from the Université Libre de Bruxelles in Belgium, shows bright-red lava and a smoking scoria cone on the upper east flank of the volcano during an eruption in 2006.“Fast-flowing lava flow was erupted from an eastwards tr ...[Read More]

Imaggeo on Mondays: Rock Fall

Rock Fall. Image by Fausto Guzzetti, distributed by EGU under a Creative Commons licence. The photograph shows a rock fall occurred near Valtopina, Umbria, Central Italy, at an unknown date. Rockfalls are a mass movement hazard. They mostly occur on steep rock faces, with the blocks that fall detaching along an existing weakness. The scale of a rock fall can range from a few blocks of rock to rock ...[Read More]