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    Author(s): Robert B. Thomas
    Date: 1991
    Source: In: Fan, Shou-Shan and Yung-Huang Kuo, eds., Fifth Federal Interagency Sedimentation Conference Proceedings, 18-21 March 1991, Las Vegas, Nevada. p. 2-17 to 2-24.
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (145 KB)

    Description

    Abstract - Because of high costs or complex logistics, scientific populations cannot be measured entirely and must be sampled. Accepted scientific practice holds that sample selection be based on statistical principles to assure objectivity when estimating totals and variances. Probability sampling--obtaining samples with known probabilities--is the only method that assures these results. However, probability sampling is seldom combined with appropriate estimators to determine suspended sediment loads. Many current load-estimating methods, therefore, have unknown bias and variation making the estimates questionable. Suspended sediment loads are often estimated by sampling concentration at fixed intervals. This type of sampling is promoted by the widespread use of pumping samplers which can be set to sample at regular intervals. Sampling intensity is sometimes increased during periods of high water discharge

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    Citation

    Thomas, Robert B. 1991. Systematic sampling for suspended sediment. In: Fan, Shou-Shan and Yung-Huang Kuo, eds., Fifth Federal Interagency Sedimentation Conference Proceedings, 18-21 March 1991, Las Vegas, Nevada. p. 2-17 to 2-24.

    Keywords

    PSW4351, watershed, probabilty sampling, suspended sediment, measuremen

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