Abstract

Effects on beaches of nine storms and two hurricanes have been measured on the beaches of Cape Cod. Changes in beach volume and topography take place very rapidly, and vertical cuts of 9 feet in the foreshore and volume changes of as much as 520 cubic feet per linear foot during one tide have been measured. The positions of offshore shoals influence the amounts of beach erosion, with cutting being greater behind openings in the bars. Migration of openings in the bars shifts the locus of maximum cut and fill laterally along the beach. Wave erosion at the base of the cliffs, while occurring irregularly, is important as it increases the rate of mass wastage in the slopes.

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