DACF Home → Bureaus & Programs → Maine Geological Survey → Geologic Hazards → Erosion → Frequently Asked Questions → Barrier Beach Migration
As sea level rises, waves can attack the upper part of the beach profile, pushing sand over the dune. At the same time, sand is pulled offshore. The barrier beach migrates landward, rolling landward over itself. The initial beach migrates landward over its own marsh into its second position.
Last updated on October 6, 2005