AI Summary

Researchers at UC San Diego’s Scripps Institution of Oceanography conducted a statewide airborne lidar survey in 2023 to update cliff‑erosion data along California’s coast. The new lidar dataset and novel mapping techniques reveal specific “hot spots” where cliffs are retreating rapidly, posing heightened risk to highways, railways, homes, parklands and public access points. This effort replaces erosion rates that had not been refreshed for a decade, providing a more current picture of coastal change.

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