Satellite-Derived Shoreline Change Along Western Long Island, New York
The study found that the western ends of these beaches have been steadily growing, or accreting, at a rate of about 4 meters per year. This trend is attributed to net westward longshore drift, a process driven by ocean currents that move sediment along the coastline. Meanwhile, the central sections of the beaches, particularly areas with groin fields—structures designed to trap sand—showed slower rates of shoreline change, typically between 0.5 and 1.5 meters per year. One notable observation was the presence of so-called sediment waves, or patterns of erosion and accretion lasting several years, moving westward along the shoreline during the