Emdad, Hadi
(2005)
An Efficient Method of Estimating Sediment Discharge in Rivers.
Doctoral Dissertation, University of Pittsburgh.
(Unpublished)
Abstract
Quantifying of sediment discharge with conventional measurement techniques is expensive and labor intensive. An efficient method that can estimate the average cross-sectional sediment concentration and discharge in a river channel by single-point sampling was developed. This method relies on the Chiu's velocity and sediment distribution models, which are based on a probability concept. The advantage of this approach compared to conventional methods is that the velocity and sediment concentration can be accurately estimated throughout the water depth, including the channel bed and water surface. This method requires determining the location of a vertical hereinafter is referred to as the y-axis, where the maximum velocity of the entire cross section occurs. The correlation between the mean sediment concentration on each vertical and the cross-sectional mean concentration is computed. It has been found that the optimal location of sediment sampling should be on y-axis at a point where sediment concentration is equal to the mean concentration on y-axis. A family of plots for selection of the sampling location was developed. Finally, a method based on Chiu's sediment transport model and data analysis was developed to estimate the mean sediment concentration in a channel section. This sediment concentration can be used to calculate the sediment discharge.
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Details
| Item Type: |
University of Pittsburgh ETD
|
| Status: |
Unpublished |
| Creators/Authors: |
|
| ETD Committee: |
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| Date: |
31 January 2005 |
| Date Type: |
Completion |
| Defense Date: |
3 December 2004 |
| Approval Date: |
31 January 2005 |
| Submission Date: |
7 December 2004 |
| Access Restriction: |
No restriction; Release the ETD for access worldwide immediately. |
| Institution: |
University of Pittsburgh |
| Schools and Programs: |
Swanson School of Engineering > Civil and Environmental Engineering |
| Degree: |
PhD - Doctor of Philosophy |
| Thesis Type: |
Doctoral Dissertation |
| Refereed: |
Yes |
| Uncontrolled Keywords: |
estimating river sediment discharge; mean sediment concentration; sedimant sampling in rivers; single-point sediment sampling |
| Other ID: |
http://etd.library.pitt.edu/ETD/available/etd-12072004-112035/, etd-12072004-112035 |
| Date Deposited: |
10 Nov 2011 20:08 |
| Last Modified: |
15 Nov 2016 13:53 |
| URI: |
http://d-scholarship.pitt.edu/id/eprint/10120 |
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