The Uncertainty of Measurements in River Hydraulics: Evaluation of Friction Velocity Based on an Unrepeatable Experiment
The chapter addresses the issue of evaluating uncertainty of measurements in river hydraulics. As replication of experiments in natural settings is not possible, the chapter highlights the case of unrepeatable experiments. Evaluation of friction velocity under flood conditions basing on the Saint-Venant set of equations serves as an example of indirect measurement of physical quantity.
KeywordsUncertainty Analysis Friction Velocity Standard Uncertainty Sensitivity Coefficient Deterministic Approach
This study has been financed by National Science Centre. Grant No. DEC-2011/01/N/ST10/07395. The authors would like to express their appreciation to Jerzy Szkutnicki from the Institute of Meteorology and Water Management for his help in obtaining and interpreting field measurement data.
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