Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Spatial total load rating curve for a large river: A Case study of the Tigris River at Baghdad
College of Engineering, University of Baghdad, Baghdad, Iraq .
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.ORCID iD: 0000-0002-6790-2653
College of Science, University of Baghdad, Baghdad, Iraq.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.ORCID iD: 0000-0002-1365-8552
2019 (English)In: International Journal of River Basin Management, ISSN 1571-5124, E-ISSN 1814-2060Article in journal (Refereed) Epub ahead of print
Abstract [en]

The Tigris River in Baghdad is a large sand-bed river, supply-limited because of the implementation of a water flow regulation scheme comprising a series of reservoirs and barrages.  The significant reduction in the water discharge has affected the hydraulic performance of the river and turned it into an under-fit river of complicated morphology where many islands and bank deposits have been showed up across an 18km reach in addition to the essential sinuosity. Measuring sediment load at individual cross-sections in the river gives misleading estimates and the corresponding sediment rating curve has a locally limited using. A spatially sediment rating by investigating sediment loads over the complicated reach is required to overcome the local limitations. Sediment transport rates have been investigated at 16 cross-sections along the study reach by collecting suspended load, bed load and bed material samples. Velocity profiles were measured at the sampling stations using an Acoustic Doppler Current Profiler (ADCP). The measurement results indicated that the suspended load is the dominant mode of transport (93.5%). However, bedloads were considered in determining the total loads. A spatial total load rating curve in the form of a power function was established and examined against the sediment measurements. Twenty-two previously published total load formulae where applied at the same sections and of these the Colby1964 formula gave the closest fit to the measured loads. Based on the results from this study a recommended procedure is established for using a spatial total load rating curve to estimate sediment transport rates for similar morphologically complicated rivers. Average annual transport rates during the period 2009-13 was estimated at 3.21 million tons.

Place, publisher, year, edition, pages
UK: Taylor & Francis, 2019.
Keywords [en]
Sediment sampling, Total sediment load, Sediment rating curve, Spatial variation, Supply-limited, Under-fit river, Tigris River
National Category
Engineering and Technology Geotechnical Engineering
Research subject
Soil Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-75479DOI: 10.1080/15715124.2019.1653305ISI: 000482070100001OAI: oai:DiVA.org:ltu-75479DiVA, id: diva2:1341886
Available from: 2019-08-12 Created: 2019-08-12 Last updated: 2019-09-13

Open Access in DiVA

fulltext(2500 kB)5 downloads
File information
File name FULLTEXT01.pdfFile size 2500 kBChecksum SHA-512
bae33dbb96d5546c0c6bf62bedc326d6ce8f4332fbbf627cd701f8635cea61cbf7a7cc44400bf1e90b3b1c3dffe7299f042fe4cf8abc7f1d01e3697cd3868192
Type fulltextMimetype application/pdf

Other links

Publisher's full text

Search in DiVA

By author/editor
Al-Ansari, NadhirKnutsson, Sven
By organisation
Mining and Geotechnical Engineering
In the same journal
International Journal of River Basin Management
Engineering and TechnologyGeotechnical Engineering

Search outside of DiVA

GoogleGoogle Scholar
Total: 5 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 85 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf