
In Greenland, the Ice Doesn’t Just Flow, It Quivers and Quakes
When Andreas Fichtner unspooled a fiber-optic cable into a deep hole in Greenland’s ice, he wasn’t expecting to discover a whole new way that glaciers move. Even when the cable started sending back data, his first reaction was skeptical. “Rubbish,” Dr. Fichtner, a professor of seismology and wave physics at the Swiss university ETH Zurich,…