A 1986 survey of Canadian ice shelves found that , involving  of ice, calved from the Milne and Ayles ice shelves between 1959 and 1974. The Ward Hunt Ice Shelf, the largest remaining section of thick (greater than ) landfast sea ice along the northern coastline of Ellesmere Island, lost  of ice in a massive calving in 1961–1962. It further decreased by 27% in thickness (13 m, 43 ft) between 1967 and 1999.
A 1986 survey of Canadian ice shelves discovered that, involving a volume of ice, calved from the Milne and Ayles ice shelves between 1959 and 1974. The Ward Hunt Ice Shelf, the largest remaining section of thick (greater than ) landfast sea ice along the northern coastline of Ellesmere Island, lost a portion in a massive calving event in 1961–1962. It further diminished by 27% in thickness (13 m, 43 ft) between 1967 and 1999.