Ten
Friday, April 22
USS Bougainville
Lake Gatun, Panama
That night, over a dinner of pot roast in the captain’s wardroom, Sarah schooled Eva on seiches then told her about the Antarctic Thwaites Glacier, also known as the Doomsday Glacier. It was melting rapidly, assaulted from beneath by warmer sea water, and this single glacier generated around four percent of the annual rise in the sea level. But its bigger threat lay in the seismic activity generated whenever the massive glacier calved. “Studies in Greenland have shown that glaciers calving from above water can hit the surface with enough force to cause a small tsunami. But glaciers calving from below water create a different risk. If a sufficiently large fragment falls to the ocean floor, it could strike with enough force to caus
