IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Special sessions : Experimental study on uncertainty assessment of adcp discharge measurement using gum framework
Experimental study on uncertainty assessment of adcp discharge measurement using gum framework
Acoustic Doppler Current Profilers (ADCPs) have been widely utilized for assessing streamflow discharge, yet few
comprehensive studies were conducted to evaluate discharge uncertainty in consideration of individual uncertainty
components. It could be mostly because it was not easy to determine which uncertainty framework can be appropriate to
rigorously analyze streamflow discharge driven by ADCPs. In this regard, considerable efforts have been made by
scientific and engineering societies to develop a standardized theoretical framework for uncertainty analysis in
hydrometry. One of the well-established UA methodology based on sound statistical and engineering concepts is Guide
to the Expression of Uncertainty Measurement (GUM) adopted widely by various scientific and research communities.
This research fundamentally adapted the GUM framework to assess individual uncertainty components of ADCP
discharge measurements, and subsequently provided results of a customized experiment in a controllable real-scale
artificial river channel. We focused particularly upon sensitivities of uncertainty components in the GUM framework
driven by ADCPs direct measurements such as depths, edge distance, submerged depth, velocity gap, sampling time,
repeatability, bed roughness and so on. Both stationary and moving boat measurements of ADCPs were considered for
uncertainty analysis as well. All of measurements were carefully compared with data using other instrumentations such
as ADV to evaluate individual uncertainty components. .
File Size : 762,104 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Special sessions
Date Published : 19/08/2015
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