Development of a cell-based model to derive direct runoff hydrographs for ungauged mountainous basins
文献类型：期刊论文
| 作者 | Hunukumbura, P. B. ; Weerakoon, S. B. ; Herath, Srikantha |
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2007-12 |
| 卷号 | 4期号:4页码:309–320 |
| 关键词 | ungauged basin GIS unit hydrograph mountainous basin direct runoff hydrograph model cell-based model cell-basin model |
| ISSN号 | 1672-6316 |
| 通讯作者 | Weerakoon, SB |
| 英文摘要 | A model to derive direct runoff hydrograph for an ungauged basin using the physical properties of the basin is presented. The basin is divided into grid cells and canal elements. Overland flow is generated from each grid cell of the basin by application of continuous effective rainfall of 1 mm/hr to the basin. The flow generated is routed through downstream grid cells and the canal elements using the kinematic wave approach. The travel time for direct runoff from each grid cell to the basin outlet is calculated and the S-curve is derived for the basin. The S-curve is used to derive the unit hydrograph of a given duration for the basin. The model, referred as Cell-basin model was applied to the Upper Kotmale Basin in Sri Lanka and the model predictions of direct runoff hydrographs for rainfall events agreed with the observations to a reasonable accuracy. Comparison of the unit hydrographs obtained from the model and from the conventional Snyder's synthetic unit hydrograph using regionalized parameters assuming the basin as an ungauged basin, with the unit hydrograph derived from the observations showed that the model predicted unit hydrograph was more suitable than that obtained by Snyder's method for Sri Lankan up country basins. Thus, the present model is a useful tool to obtain direct runoff hydrograph for ungauged basins. |
| 语种 | 英语 |
| 公开日期 | 2013-08-15 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/6089]  |
| 专题 | 成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2007_Vol4 No.4 |
| 推荐引用方式 GB/T 7714 | Hunukumbura, P. B.,Weerakoon, S. B.,Herath, Srikantha. Development of a cell-based model to derive direct runoff hydrographs for ungauged mountainous basins[J]. JOURNAL OF MOUNTAIN SCIENCE,2007,4(4):309–320. |
| APA | Hunukumbura, P. B.,Weerakoon, S. B.,&Herath, Srikantha.(2007).Development of a cell-based model to derive direct runoff hydrographs for ungauged mountainous basins.JOURNAL OF MOUNTAIN SCIENCE,4(4),309–320. |
| MLA | Hunukumbura, P. B.,et al."Development of a cell-based model to derive direct runoff hydrographs for ungauged mountainous basins".JOURNAL OF MOUNTAIN SCIENCE 4.4(2007):309–320. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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