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Unlike Ice Cubes in a Glass - NASA Sea Level Change Portal
A floating object, like an iceberg or other sea ice, displaces its own weight in water. But fresh water is less dense than salt water. So, when floating ice melts and becomes liquid, it takes up more volume than the seawater it displaced when it was ice, raising sea level. This has about 3% the effect of grounded ice-melt and raises sea level.
How Ice-Shelf Loss Drives Sea Level Rise
The question: What are ice-shelf calving and thinning, and what role do they play in Antarctic ice-shelf loss and sea level rise? The answer: The Antarctic ice sheet contains enough ice to raise global mean sea level by 58 meters if it all melted.Every year, the sheet loses an average of 150 billion metric tons of ice. Ice-shelf calving and thinning both contribute to the loss of ice-shelf ...
Sea Level - Climate Change: Vital Signs of the Planet
Global sea levels are rising as a result of human-caused global warming, with recent rates being unprecedented over the past 2,500-plus years. ... Sea level rise is caused primarily by two factors related to global warming: the added water from melting ice sheets and glaciers, and the expansion of seawater as it warms. The first graph tracks ...
Ice Melt | Global Sea Level - NASA Sea Level Change Portal
A large fraction of the Earth's fresh water is frozen: It's stored in glaciers all around the world, and in both the Greenland and Antarctic ice sheets.When this ice melts or calves off, the water flows into the oceans and sea levels rise.If all glaciers and ice sheets melted, global sea level would rise by more than 195 feet (60 meters). NASA continuously measures the weight of glaciers ...