Cryospheric Sciences

Imaggeo On Monday: A meander in the meltwater valley

Julien Seguinot December 27, 2021

A meander in the meltwater valley . Credit: Julien Seguinot (distributed via imaggeo.egu.eu)

At the edge of the Greenland Ice Sheet, surface melt releases old layers of dust, that have travelled thousands of years into the ice. Under sunny weather, the dust heats up with radiation, melts the ice underneath, and thus accumulates in tiny potholes and meltwater creeks. However, this photo was taken after a rainy day. The rain triggered increased melt on the surface of the ice irrelevant of i ...[Read More]

Imaggeo On Monday: Contorted Streams on the Gates Glacier

Allen Pope December 20, 2021

Supraglacial streams in ogives, Gates Glacier

Annual ridges and troughs (called wave ogives) are formed as the ice of the Gates Glacier (in Alaska’s Wrangell Mountains) flows through a steep icefall. Down-glacier, as the ice melts, the rushing meltwater is funnelled into streams, carving ice canyons as it flows, but ultimately directed by these topographic constraints. Description by Allen Pope, after the description on imaggeo.e ...[Read More]

GeoTalk: Meet Larissa van der Laan, glaciologist and science-artist!

Simon Clark December 15, 2021

Hi Larissa, thankyou for spending time with us today! To break the ice, could you tell us a little about yourself and your research? Ha, I see what you did there. I’m Larissa, she/her, 29, and a PhD candidate at the Institute of Hydrology and Water Resources Management in Hannover, Germany. I’ve been fascinated by snow and ice since I was little, writing my first ever school report and ...[Read More]

Imaggeo On Monday: Ice caves in high altitude karstic areas

Renato R. Colucci December 13, 2021

Ice caves in high altitude karstic areas. Credit: Renato R. Colucci (distributed via imaggeo.egu.eu)

High altitude karstic environments often preserve permanent ice deposits within caves, representing a lesser-known portion of the cryosphere. Despite being not so widespread and easily reachable as mountain glaciers and ice caps, ice-caves preserve a great deal of information about past environmental changes and paleoclimatic evolution. Since one of their main characteristics is to have ground-ice ...[Read More]