Sea levels are rising because huge sheets of ice that have long been perched atop land masses, especially Antarctica and Greenland, are melting as global temperatures rise. Sea level can rise for two reasons, both linked to a warming planet. As long ago as 2007, the scientists found that about half of the water planners they contacted were predicting that a sea level rise of 6 to 18 inches over the coming 50 years … When ice on land, such as mountain glaciers or the ice sheets of Greenland or Antarctica, melt, that water contributes to sea level rise. Sea level rise: Miami and Atlantic City fight to stay above water Guardian A teenager, wrists lined in aquamarine beaded bracelets, rubs sleep from her eyes. Distinctive ‘cross-checking’ tradition helps explain extraordinary accuracy in 21 stories about dramatic sea level rises between 7,000 and 18,000 years ago The highest point of the country is a mere 15ft above the sea level. The land is sinking because of groundwater pumping. Rising sea levels combined with sinking land will flood many areas around San Francisco by 2100. Sea level rise is already redrawing coastlines around the world. The upper 2,300 feet (700 meters) of the ocean has been warming since the 1970s – and much of the extra heat generated by global warming is absorbed by the ocean. What happens when the coast retreats through a major city? About half of the sea-level rise over the past 25 years is attributable to warmer oceans simply occupying more space. The rising sea levels are of a great concern as the islands are low lying at an average of 6.6 ft above the sea level. By 2050, sea-level rise will push average annual coastal floods higher than land now home to 300 million people, according to a study published in … In Florida, seawater is moving rapidly inland along coastal rivers as sea level rises and water is withdrawn from the rivers at an “excessive” rate, according to researchers at Florida State University. Parts of the airport, as well as large sections of Union City, Foster City, and Treasure Island would be underwater. The rise in sea levels has two main drivers: the melting of ice sheets in Greenland and Antarctica; and “thermal expansion,” meaning that warm water has greater volume than cool water… The Ocean Protection Council, an advisory body tasked with guiding the state’s coastal policies, is now pushing California to be prepared for at least 3.5 feet of sea level rise … Much of the world's population lives on or near the coast, and rising seas are something worth watching. Thermal expansion: When water heats up, it expands. The University of Hawaii tracked sea levels in the nation for 23 years, a project that began in 1978.Their study showed a rise of 1.2 mm annually. Not only is more water flowing into the ocean from ice sheets and glaciers – the warmer water of the ocean is taking up more space, adding to sea level rise.

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