Abstract

The sampling interval required for estuarine mean flow estimation is examined. Examples drawn from the literature show that nontidal estuarine flow is highly variable and that under common everyday conditions this variance is predominantly wind-induced. Thus, record lengths sufficiently longer than the time scale of locally energetic wind fluctuations are required. A nondimensional parameter expressing the number of tidal cycles which must be averaged over to attain a given error tolerance is offered....

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