Good question about the tidal wave. I'm not sure about that. From the article: "When ice shelves lose large chunks, it does not raise sea level because these b

Good question about the tidal wave. I'm not sure about that. From the article: "When ice shelves lose large chunks, it does not raise sea level because these bodies are already afloat. However, the loss of an ice shelf can speed up the seaward flow of the nonfloating glacial ice behind it, and this ice can in turn contribute to sea-level rise. Researchers have estimated that the loss of all the ice that the Larsen C ice shelf currently holds back would raise global sea levels by 10 centimetres."