دورية أكاديمية
Estimating design hydrographs at the basin scale: from event-based to continuous hydrological simulation
| العنوان: | Estimating design hydrographs at the basin scale: from event-based to continuous hydrological simulation |
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| المؤلفون: | Ayan Santos Fleischmann, Walter Collischonn, Rodrigo Cauduro Dias de Paiva |
| المصدر: | Revista Brasileira de Recursos Hídricos, Vol 24 (2019) |
| بيانات النشر: | Associação Brasileira de Recursos Hídricos, 2019. |
| سنة النشر: | 2019 |
| المجموعة: | LCC:Technology LCC:Hydraulic engineering LCC:River, lake, and water-supply engineering (General) LCC:Geography. Anthropology. Recreation LCC:Environmental sciences |
| مصطلحات موضوعية: | Design hydrograph, Continuous simulation, Event-based simulation, Rainfall-runoff model, Hydrological modeling, Technology, Hydraulic engineering, TC1-978, River, lake, and water-supply engineering (General), TC401-506, Geography. Anthropology. Recreation, Environmental sciences, GE1-350 |
| الوصف: | ABSTRACT Design hydrographs are widely used in practical hydrologic engineering problems. Typical applications adopt event-based (EBM) methods, using rainfall-runoff models to convert design hyetographs into design hydrographs. Uncertainties include the definition of antecedent conditions and the assumption of equivalence between hyetograph and hydrograph return periods. An alternative is to use continuous simulation (CSM) methods, by forcing a rainfall-runoff model with long precipitation series, and directly analyzing the output discharges. To better understand uncertainties in the EBM method and differences between CSM and EBM ones, we applied a hydrological model in the Itajaí-Açu river basin to compare a CSM method with 730 different simulations of an EBM one, considering different basin antecedent conditions and design hyetographs (10- and 50-years). Results indicated that the EBM method leads to a large range of design discharges depending on the antecedent condition. CS-based 10- and 50-years maximum discharges corresponded to percentiles between 30% and 50% of the EBM estimates. Higher discharge variation occurred in sub-basins with larger maximum soil water storage. Our conclusions agree with the literature, which points towards CSM-based methods to estimate design discharges. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English Portuguese |
| تدمد: | 2318-0331 |
| Relation: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2318-03312019000100206&tlng=en; https://doaj.org/toc/2318-0331 |
| DOI: | 10.1590/2318-0331.241920180109 |
| URL الوصول: | https://doaj.org/article/56c1767b6ce64d2e96cd705615d32357 |
| رقم الأكسشن: | edsdoj.56c1767b6ce64d2e96cd705615d32357 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 23180331 |
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| DOI: | 10.1590/2318-0331.241920180109 |