Alex Robel, an associate professor in the School of Earth and Atmospheric Sciences at Georgia Tech, said pumping sand onshore is far from a perfect solution to stabilize a beach, but it’s “one of the best tools we have in our arsenal.”

“It’s been done in the United States for almost a century in different places and we know how to do it,” Robel said. “We’re good at it.”

But nourishment is only a Band-Aid for erosion. Once cities start replenishing sand, Robel said they have to keep doing it regularly.