Beach and groin at Seven Mile Island, New Jersey

A groin at Seven Mile Island, New Jersey traps sand and contributes to widening of the barrier beach. This illustrates how human modification and wave processes shape the beach. In May 2021, Andrew Farmer, Chelsea Stalk, and Emily Wei conducted a multibeam bathymetry survey offshore of Seven Mile Island, along the southern coast of New Jersey. A similar bathymetry survey will be conducted offshore of the Rockaway Peninsula, New York. These data will be used to better understand how sediment is redistributed in the cross- and along-shore directions following storms and renourishment.