Revisiting hysteresis of flow variables in monitoring unsteady streamflows

Marian Muste; Kyutae Lee; Dongsu Kim; Ciprian Bacotiu; Marcela Rojas Oliveros; Zhengyang Cheng; Felipe Quintero

doi:10.1080/00221686.2020.1786742

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Revisiting hysteresis of flow variables in monitoring unsteady streamflows

Journal article

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Revisiting hysteresis of flow variables in monitoring unsteady streamflows

Marian Muste, Kyutae Lee, Dongsu Kim, Ciprian Bacotiu, Marcela Rojas Oliveros, Zhengyang Cheng and Felipe Quintero

Journal of hydraulic research, Vol.58(6), pp.867-887

11/09/2020

DOI: 10.1080/00221686.2020.1786742

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Abstract

Conventional streamflow monitoring methods entail one-to-one relationships between two flow variables obtained by combining direct flow measurements with statistical analyses. These relationships (i.e. ratings) are used to monitor both steady and unsteady flows despite that in the latter cases the flow variables display an inherent hysteretic behaviour. Such behaviour is prominent if the wave passing through the gauging station is non-kinematic. This paper demonstrates that the index-velocity and continuous slope-area methods are more suitable to monitor unsteady flows in comparison with the widely used stage-discharge approach. Case studies are presented to show that, contrary to current perceptions in practical applications, hysteresis can be captured even in small streams and frequently-occurring run-off events. The paper also highlights the separation of the flow variable hydrographs in unsteady flows. This hysteresis-related aspect is less investigated so far despite having important practical implications for both hydrometric and fluvial transport applications.

slope-area method

index-velocity rating

Hysteresis

streamflow monitoring

unsteady open-channel flow

stage-discharge rating

Details

Title: Subtitle: Revisiting hysteresis of flow variables in monitoring unsteady streamflows
Creators: Marian Muste - IIHR-Hydroscience & Engineering, The University of Iowa
Kyutae Lee - South Florida Water Management District
Dongsu Kim - Civil and Environmental Engineering, Dankook University
Ciprian Bacotiu - Faculty of Building Services Engineering, Technical University of Cluj-Napoca
Marcela Rojas Oliveros - IIHR-Hydroscience & Engineering, The University of Iowa
Zhengyang Cheng - Hydrologic Research Center
Felipe Quintero - IIHR-Hydroscience & Engineering, The University of Iowa
Resource Type: Journal article
Publication Details: Journal of hydraulic research, Vol.58(6), pp.867-887
DOI: 10.1080/00221686.2020.1786742
ISSN: 0022-1686
eISSN: 1814-2079
Publisher: Taylor & Francis
Grant note: DOI: 10.13039/100000001, name: NSF, award: EAR-1331906; DOI: 10.13039/100008893, name: The University of Iowa
Language: English
Date published: 11/09/2020
Academic Unit: IIHR--Hydroscience and Engineering; Geographical and Sustainability Sciences; Mechanical Engineering
Record Identifier: 9984066112902771

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