Cryospheric Sciences

Imaggeo On Monday: Desert Varnish, Antarctica Style

Martha Cary Eppes November 30, 2020

Desert Varnish, Antarctica Style . Credit: Martha Cary Eppes (distributed via imaggeo.egu.eu)

This photograph highlights the oxidized surface of diorite boulders, which fall from the ice at the base of the Mullins Glacier in Beacon Valley, Antarctica when the ice moves directly from a solid state into a gas state, without becoming a liquid in between (a process called sublimation). The particular features (morphology) of the varnish and the desert pavement of this unique environment are re ...[Read More]

Imaggeo on Monday: Time-proven shelter in drifting snow

Jan-Marcus Nasse March 9, 2020

Time-proven shelter in drifting snow. Credit: Jan-Marcus Nasse (distributed via imaggeo.egu.eu)

During my PhD I was working at the German Neumayer III station in Antarctica for my research on polar atmospheric chemistry. Since my instrument was set up on an observatory south of the main station, every day I would walk past a Scott pyramid tent to go and do my research. One day, in the midst of an Antarctic storm, I caught sight of the tent deep in the drifting snow, and took this picture. Th ...[Read More]

Winners of the EGU Best Blog Posts of 2019 Competition

Hazel Gibson January 17, 2020

Image modified from Lava glow and space at the Kilauea volcano. Credit: Andreas Johnsson (distributed via imaggeo.egu.eu).

2019 was a brilliant year for our blogging network here at EGU. Across the EGU’s official blog, GeoLog, as well as the network and division blogs there were so many interesting, educational and just downright entertaining posts this year it was hard to get the blog editors to choose their favourites! Nevertheless in December, to celebrate the excellent display of science writing across the network ...[Read More]

Imaggeo on Mondays: When boulders hitch a ride from glaciers

Ian Watkinson January 6, 2020

Glacially transported boulders, Glen More. Credit: Ian Watkinson (distributed via imaggeo.egu.eu)

Glen More, on the Isle of Mull, Scotland, is a classic locality for studying glacial landforms and sediments. Here, two prominent ice-transported boulders stand guard at the head of the valley, left behind after the Loch Lomond Readvance (Younger Dryas stade), the final pulse of Quaternary glaciation in Scotland. Behind them in the characteristic U-shaped valley, hummocky morraines are littered wi ...[Read More]