The melting of the continental ice sheets will have the greatest impact on rising sea levels. This project examines the idea of damming parts of Greenland to create a giant reservoir, preventing the melted glaciers’ water from entering the ocean, and thus reducing the effect of rising sea levels and changes in salinity levels. Our study of the landmass topography of Greenland shows that damming is very feasible because Greenland is shaped like a giant basin, with mountains along the coast, five reasonably narrow outlets (fjords), and the center sinking some 300 meters below sea level. At least five dams need to be built at the fjords; the cost would be on the order of $1.5 trillion – a steep but affordable price. Further work needed includes: detailed topography and geological studies of Greenland’s coast under the ice sheet to determine the most suitable type of dams and the need for any additional dams other than at the five fjords, developing an engineer plan to construct dams in the extreme weather conditions of Greenland, and creating an alliance of countries to fund and undertake the project.
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