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4 Beach-Fill End Losses 
The placement of beach nourishment fill material within the Sea Bright to 
Ocean Township construction project has represented a substantial perturbation 
in an otherwise relatively long, straight shoreline. However, within the 
Monmouth Beach area, this perturbation is even more pronounced, owing to the 
design of a more or less uniform dry beach width along the project reach and the 
more seaward location of existing infrastructure within Monmouth Beach as 
compared with adjacent properties. The shoreline perturbation of the beach fill 
at the hot spot can be ideally treated as a short beach fill situated upon a longer 
beach fill. The shoreline perturbation resulting from the placement of beach-fill 
material represents a disequilibrium condition, and induced sediment transport 
flows can be expected. These induced sediment transport flows can occur in 
both cross-shore and longshore directions. Dean, Healy, and Dommerholt 
(1993) provided a description of three phases of observed sediment transport in 
the vicinity of beach nourishment projects, shown in Figure 255. The effects of 
cross-shore sediment flows are examined in the previous chapter, whereas this 
analysis focuses on longshore sediment transport flows and the associated 
longshore equilibration. 
The intent of this analysis is to examine the Monmouth Beach hot spot (with 
respect to Contract 1A and shorelines to the south) to estimate the magnitude of 
fill material expected to be removed from the placement region because of 
beach-fill end losses. Two approaches are employed in the following analysis: 
the first involves analytical solutions of the shoreline change equations, and the 
second, involves application of the GENESIS shoreline change model (Hanson 
and Kraus 1989) in an idealized manner. 
Analytical Approach 
The analysis summarized in this section is documented in Beach Nourish- 
ment and Protection (National Research Council 1995). Pelnard-Considére 
(1956) combined the linearized equation of sediment transport and the equation 
of continuity, considering the profiles to be displaced without change of form, to 
yield 
Chapter 4 Beach-Fill End Losses 
