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Means and method of sampling flow related variables from a waterway in an accurate manner using a programmable calculatorAuthor(s): Rand E. Eads; Mark R. Boolootian; Steven C. [Inventors] Hankin
Source: U.S. Patent 4,660,422. 28 April 1987 9 p. Int. Cl. G01N 1/44.
Publication Series: Miscellaneous Publication
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DescriptionAbstract - A programmable calculator is connected to a pumping sampler by an interface circuit board. The calculator has a sediment sampling program stored therein and includes a timer to periodically wake up the calculator. Sediment collection is controlled by a Selection At List Time (SALT) scheme in which the probability of taking a sample is proportional to its estimated contribution to total sediment discharge, or according to accumulated predicted sediment weight. Stage height is also measured and is recorded according to a set scheme.
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CitationEads, Rand E.; Boolootian, Mark R.; Hankin, Steven C. [Inventors] 1987. Means and method of sampling flow related variables from a waterway in an accurate manner using a programmable calculator. U.S. Patent 4,660,422. 28 April 1987 9 p. Int. Cl. G01N 1/44.
KeywordsPSW4351, Caspar Creek, programmable calculator, pumping sampler, sediment, SALT
- Estimating total suspended sediment yield with probability sampling
- Calibrating SALT: a sampling scheme to improve estimates of suspended sediment yield
- Series expansion of the modified Einstein Procedure
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