Tell me more about a
trip to Antarctica!
Edge of sea-ice off Oates Land
This is old sea-ice that has
been subjected to forces from the sea at some time, hence the
broken up nature of the small pressure-ridges. Sea ice is
perfectly flat when it first forms, but distant storms and
ocean currents may push with enormous force at the edge.
This can cause these pressure ridges which occur where the
ice is pushed up and over itself. Sometimes quite eerily,
the forces are so distant as to not be discernable, the ice
just starts to heave and buckle in what otherwise can be
Picture courtesy of Mike Usher
- Mike went on a Ross Sea expedition on board the Kapitan Khlebnikov
You can purchase a selection of Mike's pictures