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Huge cakes of ice were squeezed out till they popped into the air like melon seeds squeezed from between the thumb and forefinger of a child , while all along the banks a wall of ice was forced up . At its center , the ice can be up to 3 km thick , representing 10 percent of the world 's total fresh water reserves.If all the ice were to melt , the world 's oceans would rise seven meters . Once models of the surface structure of ice were obtained , the results were analyzed by Christian Minot in Paris , using total-energy calculations , and Geert-Jan Kroes in Amsterdam , using molecular dynamic simulations .