Abstract

Mechanical analyses of repeated samplings of Ipswich Beach, Massachusetts, covering an eleven month period are presented. The successive samplings indicate that a change in the median diameter at one station is nearly always paralleled by a change in the same direction at the other stations. At an individual station the spread between high and low tide medians tends to remain of the same order. To a much lesser degree, the skewness and sorting values tend to change in unison. On a comparable beach, a single sampling should give the same range of difference in successive medians along the beach and thus indicate the median trend.

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