News & information on Antarctica & the Southern Ocean

Tides under Ronne-Filchner Ice Shelf move grounding line by 20km

The Foundation Ice Stream meets the Ronne-Filchner Ice Shelf. Photo: Nature Magazine

One of the highest tidal ranges in Antarctica is 5 meters, but it occurs far from open water, beneath the Ronne-Filchner Ice Shelf. Where the Foundation Ice Stream meets the shelf, the grounding line is located 2km below sea level. With each tide, the grounding line oscillates 20km back and forth along the bedrock.

More information in Nature 


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