| Revista: | Anais da Academia Brasileira de Ciencias |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000420315 |
| ISSN: | 0001-3765 |
| Autores: | Beskow, Samuel1 Nunes, Gabriela S2 Mello, Carlos R. de3 Caldeira, Tamara L4 Norton, Lloyd D5 Steinmetz, Alice A2 Vargas, Marcelle M1 Avila, Leo F2 |
| Instituciones: | 1Universidade Federal de Pelotas, Engenharia Hídrica, Pelotas, Rio Grande do Sul. Brasil 2Universidade Federal de Pelotas, Programa de Pos-Graduacao em Recursos Hidricos, Pelotas, Rio Grande do Sul. Brasil 3Universidade Federal de Lavras, Departamento de Engenharia, Lavras, Minas Gerais. Brasil 4Universidade Federal de Pelotas, Engenharia Civil, Pelotas, Rio Grande do Sul. Brasil 5Purdue University, Department of Agricultural and Biological Engineering, West Lafayette, Indiana. Estados Unidos de América |
| Año: | 2018 |
| Periodo: | Jun |
| Volumen: | 90 |
| Número: | 2 |
| Paginación: | 1873-1890 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Analítico |
| Resumen en inglés | Heavy rainfall in conjunction with an increase in population and intensification of agricultural activities have resulted in countless problems related to flooding in watersheds. Among the techniques available for direct surface runoff (DSR) modeling and flood risk management are the Unit Hydrograph (UH) and Instantaneous Unit Hydrograph (IUH). This study focuses on the evaluation of predictive capability of two conceptual IUH models (Nash and Clark), considering their original (NIUH and CIUH) and geomorphological approaches (NIUH GEO and CIUH GEO ), and their advantages over two traditional synthetics UH models – Triangular (TUH) and Dimensionless (DUH), to estimate DSR hydrographs taking as reference two Brazilian watersheds with contrasting geomorphological and climatic characteristics. The main results and conclusions were: i) there was an impact of the differences in physiographical characteristics between watersheds, especially those parameters associated with soil; the dominant rainfall patterns in each watershed had an influence on flood modeling; and ii) CIUH was the most satisfactory model for both watersheds, followed by NIUH, and both models had substantial superiority over synthetic models traditionally employed; iii) although geomorphological approaches for IUH had performances slightly better than TUH and DUH, they should not be considered as standard tools for flood modeling in these watersheds |
| Disciplinas: | Geociencias, Ingeniería, Matemáticas |
| Palabras clave: | Hidrología, Ingeniería hidráulica, Matemáticas aplicadas, IUH de Clark, IUH de Nash, Escorrentía, Hidrogramas, Geomorfología |
| Keyword: | Hydrology, Hydraulic engineering, Applied mathematics, Clarks IUH, Nashs IUH, Surface runoff, Hydrographs, Geomorphology |
| Texto completo: | Texto completo (Ver PDF) |
