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March 9, 2018 04:45 pm

Sea Level Rise in the SF Bay Area Just Got a Lot More Dire

An anonymous reader writes: San Francisco Bay Area residents have long been aware of the threat that sea level rise poses to their coastal existence -- but things suddenly look a lot more serious. A new study examines the simultaneous phenomena of rising sea levels and subsiding coastal land, and as Wired reports, the situation is pretty dire. Models that factor in just sea level rise predict that at least 20 square miles could be underwater by 2100. Once you add in subsiding land, that jumps to nearly 50 square miles, and could get as bad as 165 square miles. Or, put another way, by the end of the century, half of the runways and taxiways at San Francisco Airport could be submerged. The study found that most of the Bay's coastline is sinking at a rate of less than 2 millimeters a year -- and while that may not sound like a lot, the millimeters can add up fast. "You talk to someone about, 'Oh the land is going down a millimeter a year,' and that can be kind of unimpressive," says William Hammond, a researcher at the University of Nevada Reno who studies subsidence (but was not involved in this particular project). "But we know as scientists that these motions, especially if they come from plate tectonics, that they are relentless and they will never stop, at least as long as we're alive on this planet."

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