Effects of Nonhomogeneous Soil Characteristics on the Hydrologic Response: A Case Study
| Autor: | Jihyeong Hwang, Khil H. Lee, Hyungkeun Lee |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Watershed
lcsh:Hydraulic engineering Hydrological modelling Geography Planning and Development Drainage basin Soil science Aquatic Science Runoff curve number Biochemistry Soil characteristics lcsh:Water supply for domestic and industrial purposes lcsh:TC1-978 hydrologic modeling uncertainty Water Science and Technology parameters geography lcsh:TD201-500 geography.geographical_feature_category aggregation flood nonhomogeneous catchments Infiltration (hydrology) Environmental science Spatial variability Arithmetic mean |
| Zdroj: | Water, Vol 12, Iss 2416, p 2416 (2020) Water Volume 12 Issue 9 |
| ISSN: | 2073-4441 |
| Popis: | This study examined how different nonhomogeneous soil characteristics affected hydrologic responses in rainfall-runoff models. The cell-based FLO-2D and lumped Hydrologic Engineering Center Hydrologic Modeling System (HEC-HMS) were setup. Then, water loss parameters of both the Green-Ampt infiltration approach and curve number method were prescribed and applied in three different ways: (i) a separate value for each cell (mosaic (ii) a representative as a most frequent occurring value for a large area (predominant) (iii) and a representative as an arithmetic mean value for a watershed (arithmetic mean). The spatial variability of nonhomogeneous catchment parameters was disregarded in lumped models, while each cell had distinct surface parameters in the distributed models. This study shows that the hydrologic response was meaningfully different in different representations. For the study site, the mosaic method was recommended for distributed models, and arithmetic mean was recommended for lumped models. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|