Swash zone sediments on two oceanside and two bayside beaches on Sandy Hook spit are examined to determine whether distinct differences exist among grain size parameters on beaches which have very. different wave regimes. The differences are subtle due to the inherent similarity of swash zone processes and the overall similarity of the source sediments. Differences in grain size statistics are noticeable, however, and they appear to be related to differences in wave energy and beach mobility on each beach. Measures of dispersion offer one means of discriminating among beaches. Examination of plots of changes in grain size statistics through time are also useful. Bivariate plots appear to be of limited value, however.

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