Primary Frontal Dune (PFD) 1
Primary Frontal Dune (PFD) 1 : A continuous or nearly continuous mound or ridge of sand with relatively steep seaward and landward slopes immediately landward and adjacent to the beach and subject to erosion and overtopping from high tides and waves during major coastal storms. The inland limit of the PFD occurs at the point where there is a distinct change from a relatively steep to a relatively mild slope
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