Ice melting

H.G. You could say that, but as they flow to the margins they can get in contact with the ocean. The ice sheet in → Greenland is predominately land-based. But its outlet glaciers can have a strong interaction with the ocean. The ocean is melting the ice from underneath + the side. In contrast → a large part of the Antarctic ice sheet is grounded below sea-level, meaning that the ice is in contact with ocean water.

It is important to understand how heat is transported by the ocean currents to the ice and how the changing temperature of the water influences ice melting. → How does warm water intrusion into the fjords in Greenland and under the ice shelves in Antarctica affect the outlet glaciers and ice shelves? How do the currents evolve as a result?

After the crew are overcome with acute states of distress and fear from hearing these disembodied voices, the ship's captain provides an explanation to the source of such noises. He points out that they are sailing very near the edge of a frozen sea and that a year before in that very same spot there had been a bloody and wild sea battle where many men, women and children had been brutally killed. And accordingly, as he explains it, all the frightful noises of the battle had been frozen in the cold sea air and were now a year later beginning to thaw, and this was what Pantagruel and his comrades were now starting to hear.