Identifying the pool-point bar location based on experimental investigation
Morphological relationships of meander evolution in terms of hydraulic and geometric characteristics are essential for river management. In present study, an experimental based study of meander evolution was employed to develop a prediction formula for identifying the pool-point bar location by usin...
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doaj-c9cd1fc2f3ae4dddac18cf8eb99b79a02020-11-25T02:28:49ZengSciendoJournal of Water and Land Development2083-45352019-12-0143110611210.2478/jwld-2019-0068jwld-2019-0068Identifying the pool-point bar location based on experimental investigationMaatooq Jaafar S.0Hameed Luay1University of Technology, Faculty of Civil Engineering, PO Box 35010, Tel Mohammad, Baghdad, IraqUniversity of Kufa, Faculty of Engineering, Kufa, Najaf Governorate, IraqMorphological relationships of meander evolution in terms of hydraulic and geometric characteristics are essential for river management. In present study, an experimental based study of meander evolution was employed to develop a prediction formula for identifying the pool-point bar location by using the dimensional analysis technique and multiple nonlinear regressions. Through the experimental work on a race of the non-uniform river sand, a set of experimental runs have been carried out through combining different hydraulic and geometric parameters to produce different empirical conditions that have a direct impact on the pool-point bar location. Based on the experimental observations and measurements, the variation in pool–point bar locations could be interpreted to that the hydraulic and morphologic properties through the meander evolution were varied during the time causes the variations in the patterns of the pool-point bar formations accordingly. The developed formula was verified by using another set of the experimental data and tested with three statistical indicators. The predicted results indicated that the proposed formula had high reliability for practical estimation of the pool-point bar location. This reliability was tested by the statistical indicators, where the less values have been resulted for bias and mean absolute error (MAE), 0.0004 and 0.0110 respectively, whereas the higher values 0.935 and 0.930 are achieved for the Nash–Sutcliffe efficiency (NSE) and the determination coefficient R2, respectively.http://www.degruyter.com/view/j/jwld.2019.43.issue-1/jwld-2019-0068/jwld-2019-0068.xml?format=INTexperimental investigationmeander evolutionmorphologic propertiespool-point barriver sand |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Maatooq Jaafar S. Hameed Luay |
spellingShingle |
Maatooq Jaafar S. Hameed Luay Identifying the pool-point bar location based on experimental investigation Journal of Water and Land Development experimental investigation meander evolution morphologic properties pool-point bar river sand |
author_facet |
Maatooq Jaafar S. Hameed Luay |
author_sort |
Maatooq Jaafar S. |
title |
Identifying the pool-point bar location based on experimental investigation |
title_short |
Identifying the pool-point bar location based on experimental investigation |
title_full |
Identifying the pool-point bar location based on experimental investigation |
title_fullStr |
Identifying the pool-point bar location based on experimental investigation |
title_full_unstemmed |
Identifying the pool-point bar location based on experimental investigation |
title_sort |
identifying the pool-point bar location based on experimental investigation |
publisher |
Sciendo |
series |
Journal of Water and Land Development |
issn |
2083-4535 |
publishDate |
2019-12-01 |
description |
Morphological relationships of meander evolution in terms of hydraulic and geometric characteristics are essential for river management. In present study, an experimental based study of meander evolution was employed to develop a prediction formula for identifying the pool-point bar location by using the dimensional analysis technique and multiple nonlinear regressions. Through the experimental work on a race of the non-uniform river sand, a set of experimental runs have been carried out through combining different hydraulic and geometric parameters to produce different empirical conditions that have a direct impact on the pool-point bar location. Based on the experimental observations and measurements, the variation in pool–point bar locations could be interpreted to that the hydraulic and morphologic properties through the meander evolution were varied during the time causes the variations in the patterns of the pool-point bar formations accordingly. The developed formula was verified by using another set of the experimental data and tested with three statistical indicators. The predicted results indicated that the proposed formula had high reliability for practical estimation of the pool-point bar location. This reliability was tested by the statistical indicators, where the less values have been resulted for bias and mean absolute error (MAE), 0.0004 and 0.0110 respectively, whereas the higher values 0.935 and 0.930 are achieved for the Nash–Sutcliffe efficiency (NSE) and the determination coefficient R2, respectively. |
topic |
experimental investigation meander evolution morphologic properties pool-point bar river sand |
url |
http://www.degruyter.com/view/j/jwld.2019.43.issue-1/jwld-2019-0068/jwld-2019-0068.xml?format=INT |
work_keys_str_mv |
AT maatooqjaafars identifyingthepoolpointbarlocationbasedonexperimentalinvestigation AT hameedluay identifyingthepoolpointbarlocationbasedonexperimentalinvestigation |
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