GeoLog

Geosciences Column: Do coastlines have memories?

Laura Roberts-Artal January 6, 2017

Man O' War Cove Credit: Sarah Weick, (distributed via imaggeo.egu.eu

Did you know that the shape of coastlines is determined by the angle at which waves crash against the shoreline. It has long been thought that fluctuations in the wave incidence angle are rapidly felt by coastlines, which change the shapes of their shores quickly in response to shifting wave patterns. Or do they? Researchers at the British Geological Survey, Duke University (USA) and Woods Hole Oc ...[Read More]

Imaggeo on Mondays: Tones of sand

Laura Roberts-Artal January 2, 2017

Tones of sand Credit: Marc Girons Lopez (distributed via imaggeo.egu.eu

With rocks dating as far back as the Precambrian, mountain building events, violent volcanic eruptions and being covered, on and off, by shallow seas, Death Valley’s geological history is long and complex. Back in the Cenozoic (65 to 30 million years ago), following a turbulent period which saw the eruption of volcanoes (which in time would form the Sierra Nevada of California) and regional uplift ...[Read More]

Shaking on Christmas Day: what we know about the 7.6 M Chile earthquake

Cindy Mora Stock December 30, 2016

Screenshot from the USGS interactive map for the 7.6 M Quellón earthquake of Christmas Day. The star indicates the earthquake epicenter.

While the majority of us were midway through our Christmas Day celebrations, a powerful 7.6 M earthquake struck off the western coast of the Chile. Natural hazards are not bound by time, location or festivities; an earthquake can happen at any time in any place, regardless of the significance of the day. As a result, in this earthquake prone region, raising awareness of the risk posed by natural h ...[Read More]

The best of Imaggeo in 2016: in pictures

Laura Roberts-Artal December 26, 2016

The best images of 2016, from imaggeo, as chosen by our readers and followers.

Imaggeo, our open access image repository, is packed with beautiful images showcasing the best of the Earth, space and planetary sciences. Throughout the year we use the photographs submitted to the repository to illustrate our social media and blog posts. For the past few years we’ve celebrated the end of the year by rounding-up some of the best Imaggeo images. But it’s no easy task to pick which ...[Read More]