LIFE-CYCLE ANALYSES OF SUBAERIAL BEACH NOURISHMENTS WITH CONCURRENT NEARSHORE PLACEMENT OF DREDGED SEDIMENT

The practice of placing sediment dredged from navigation channels in the downdrift nearshore is common US. These placements sediment, or nourishments, often correspond to a variety positive morphology and shoreline stability benefits. They are able beneficially use not directly suitable for dry beach placement, which increases volume available nourish full profile keeps system that would otherwise be removed. Concentrating placement berms may dissipate wave energy farther offshore reduce needs co-located shoreline. This strategy extend subaerial nourishment lifespan, typically cost substantially more. Co-located nourishments could lead large savings, but potential increase fill lifespan has previously been quantified.