Abstract
Spectral analysis of shoreline rate change data spanning 40 years and 122.6 km between Cape Hatteras and Cape Lookout reveals a hierarchy of longshore periodicities. The periodicities closely match wavelengths of hypothetical standing waves trapped between the offshore shoals of the two large capes. In addition, active and relic inlets and site-level beach characteristics coincide with the periodicities. We conclude that edge waves may play a significant role in determining the intensity of regional-scale processes and geomorphological responses along the Atlantic coast barrier islands.
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