Ian Allison — Scientist

Ian Alistar Allison was a Canadian basketball player who competed in the 1936 Summer Olympics. His is the only Canadian basketball team to date to win a medal at the Olympics, a silver and also the last to win a team medal. He played all six matches including the final. He was high scorer with 4 points in Canada's 19-8 loss to the Americans... (wikipedia)

Sea ice conditions have remained stable in Antarctica generally.
Ice shelves in general have episodic carvings and there can be large icebergs breaking off - I'm talking 100km or 200km long - every 10 or 20 or 50 years.