ERDC/CHL CHETN-IV-61
December 2003
Figure 6. Seafloor slopes adjacent to jetties
Another factor in characterizing the circulation of water and sediment on the sea side of the jetty
is the resultant action of seaward contours on wave approach. There may be refraction over the
seaward contours that can control circulation patterns adjacent to the jetty. For example, at
Ocean Shores, WA (beach region adjacent to Grays Harbor), offshore contours refracted waves
such that a counterclockwise circulation cell (meaning landward flow along the jetty) exists for
certain wave direction approaches (Figure 7). This complexity calls for detailed wave transfor-
mation study.
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