EGU Scientific Divisions

GeoTalk: Explosive testing with Greg Valentine

Laura Roberts-Artal April 16, 2015

The Eastern Ukinrek Maar, Alaska. Credit: R. Russell, Alaska Department of Fish and Game, USGS.

Following his session at the EGU General Assembly, Greg Valentine (Buffalo University) spoke to Sara Mynott about how he creates model volcanoes, specifically maar-diatremes, and blows them up to better understand what goes on in an eruption… So what is a maar-diatreme? A diatreme is a vent-like structure, mostly made up of broken up bedrock and magma. Initially, you have a dyke that channels magm ...[Read More]

Findings from NASA’s Dawn Mission shed new light on Ceres

Laura Roberts-Artal April 15, 2015

PIA19063 - Dawn's First Color Map of Ceres This map-projected view of Ceres was created from images taken by NASA's Dawn spacecraft during its initial approach to the dwarf planet, prior to being captured into orbit in March 2015. Image Credit: NASA/JPL –Caltech/UCLA/MPS/DLR/IDA

Scientists working on NASA’s Dawn mission revealed new findings from the spacecraft at EGU’s General Assembly. This blog post is brought to you by Nikita Marwaha, reporting on the press conference in Vienna, Austria. The very first press conference of the 2015 General Assembly this year took a closer look at the surface of Ceres. Scientists working on NASA’s Dawn Mission shared new results from th ...[Read More]

Imaggeo on Mondays: Mirror Image

Laura Roberts-Artal April 6, 2015

Water reflection in Svalbard. Credit: Fabien Darrouzet (distributed via imaggeo.egu.eu)

This week’s Imaggeo on Mondays image is brought to you by Fabien Darrouzet, who visited the icy landscapes of Svalbard back in 2012. Whilst the aim of his trip was not to better understand the geology of the landscapes, his eyes were very much focused on goings on up, up in the sky, it didn’t stop him taking this still of the snow covered peaks. This picture was taken in Svalbard (78° lat.) in Jun ...[Read More]

Imaggeo on Mondays: Drumlins Clew Bay

Laura Roberts-Artal March 30, 2015

Drumlins Clew Bay Credit: Pete Coxon (distributed via imaggeo.egu.eu)

During ice ages landscapes are sculpted by the power of advancing glaciers. From rock scratches, to changing mountains and the formation of corries, cirques and aretes, through to the formation of valleys and fjords, the effects of past glaciations are evident across the northern hemisphere landscape. Perhaps not so familiar, drumlin fields are also vestiges of the erosive power of ancient ice she ...[Read More]