A new study to be published forecasts close to three-quarters of California's beaches could disappear by 2100.
Modern satellite technology is helping researchers get a better sense of how accurate their models are at predicting beach-sand loss in California and around the world.
"What you can see here is a very little amount of sand between the stairs and the main beach of Santa Cruz over there," explained Sean Vitousek, a research oceanographer with the U.S. Geological Survey."Access is limited in these situations where beaches are lost," Vitousek said. "A lot of locations are chronically eroding. As that trend continues, you see the shoreline is almost completely lost or it's right up against the cliff at around 2100," Vitousek said.Another image from 2016 showed 300 meters -- nearly 1000 feet -- of beach-loss since then.More roads, highways and streets have collapsed, been damaged or indefinitely closed despite shoreline armoring -- engineering protections like rock walls..
Experts say rising sea levels will only exacerbate the problem. Erosive impacts have become a familiar sight along the coast such as the gaping hole that cut off access to Big Sur in recent years.
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