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| Titel |
Flood discharge measurement of a mountain river – Nanshih River in Taiwan |
| VerfasserIn |
Y.-C. Chen |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 17, no. 5 ; Nr. 17, no. 5 (2013-05-23), S.1951-1962 |
| Datensatznummer |
250018881
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| Publikation (Nr.) |
 copernicus.org/hess-17-1951-2013.pdf |
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| Zusammenfassung |
| This study proposes a more efficient method of flood discharge measurement
in mountain rivers that accounts for personal safety, accuracy, and
reliability. Because it is based on the relationships between mean and
maximum velocities and between cross-sectional area and gauge height, the
proposed method utilizes a flood discharge measurement system composed of an
acoustic Doppler profiler and crane system to measure velocity
distributions, cross-sectional area, and water depths. The flood discharge
measurement system can be used to accurately and quickly measure flood data
that is difficult to be collected by the conventional instruments. The
measured data is then used to calibrate the parameters of the proposed
method for estimating mean velocity and cross-sectional area. Then these
observed discharge and gauge height can be used to establish the water
stage–discharge rating curve. Therefor continuous and real-time estimations
of flood discharge of a mountain river can become possible. The measurement
method and system is applied to the Nanshih River at the Lansheng Bridge.
Once the method is established, flood discharge of the Nanshih River could
be efficiently estimated using maximum velocity and the water stage. Results
of measured and estimated discharges of the Nanshih River at the Lansheng
Bridge differed only slightly from each other, demonstrating the efficiency
and accuracy of the proposed method. |
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