John Clemens, a researcher from Stellenbosch University and one of the winners in the EGU Photo Contest 2014, opens our eyes to erosional processes in the Grand Canyon in this week’s Imaggeo on Mondays… The photo below was taken late in the afternoon while doing some geological tourism at the Grand Canyon in Arizona, USA. The light at this time of day is ideal for such locations as it has a ...[Read More]
GeoTalk: Want a record of historical floods? Ask the taxman
Extreme weather events, like catastrophic floods, are the malicious exclamation points of Earth’s chaotic and variable climate system; they arrive without warning and extract huge costs, both economic and humanitarian, from the communities they strike. Evidence suggests the frequency and severity of these events may be on the rise in a changing climate, but scientists struggle to place modern even ...[Read More]
Defining the age of humans
We are currently changing our planet like never before. But do these changes deserve a new name? The Anthropocene – a geological period marking the length of time for which humans have had a significant impact on the planet – was first proposed in the 1980s. But the word has gained significant attention in recent years thanks to the popularising work of Nobel prize-winning chemist Paul Crutzen. Hu ...[Read More]
Announcing the winners of the EGU Photo Contest 2014!
The selection committee received over 200 photos for this year’s EGU Photo Contest, covering fields across the geosciences. Participants have been voting for their favourites throughout the week and there are three clear winners. Congratulations to Trent Marwick, Velio Coviello and John Clemens – 2014’s fantastic photographers! Imaggeo is the EGU’s open access geosciences image repository. Photos ...[Read More]