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| Titel |
Simulating typhoon-induced storm hydrographs in subtropical mountainous watershed: an integrated 3-layer TOPMODEL |
| VerfasserIn |
J.-C. Huang, T.-Y. Lee, S.-J. Kao |
| 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 ; 13, no. 1 ; Nr. 13, no. 1 (2009-01-23), S.27-40 |
| Datensatznummer |
250011724
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| Publikation (Nr.) |
 copernicus.org/hess-13-27-2009.pdf |
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| Zusammenfassung |
| A three-layer TOPMODEL is constructed by integrating diffusion wave approach
into surface flow, soil moisture deficit into inter flow and exponential
recession curve function into base flow. A subtropical mountainous watershed,
Heng-Chi, and 22 rain storms with various rainfall types and wide ranges of
total rainfall (from 81 to 1026 mm) were applied. The global best-fitted
parameter set gives an average efficient coefficient of 82% for calibration
and 80% for validation. Sensitivity analysis reveals that soil
transmissivity dominates the discharge volume and recession coefficient
dominates the hydrograph shape in TOPMODEL framework. Over 90% observed
discharges of validation events falls within the 90% confidence interval
derived form calibration events. The resembling performances between
calibration and validation as well as good results of the confidence interval
demonstrate the capability of 3-layer TOPMODEL on simulating cyclones with
various rainfall intensity and pattern in subtropical watershed. Meanwhile,
the upper confidence limit is suggested preferably when considering flood
assessment. |
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