||A gently sloping, fan-like, subaqueous landform created by overwash from storm surges
that transports sediment from the seaward side to the landward side of a barrier island
(Jackson 1997). Sediment is carried through temporary overwash channels that cut through
the dune complex on the barrier spit (Fisher and Simpson 1979; Boothroyd et al. 1985;
Davis 1994) and spill out onto the lagoon-side platform, where they coalesce to form
a broad belt. Also called Storm-Surge Platform Flat (Boothroyd et al. 1985) and Washover
Fan Apron (Jackson 1997).