Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017WR021543 |
Hydraulic Causes for Basin Hydrograph Skewness | |
Collischonn, Walter1; Fleischmann, Ayan1; Paiva, Rodrigo C. D.1; Mejia, Alfonso2 | |
2017-12-01 | |
发表期刊 | WATER RESOURCES RESEARCH
![]() |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2017 |
卷号 | 53期号:12 |
文章类型 | Article |
语种 | 英语 |
国家 | Brazil; USA |
英文摘要 | It has been suggested that hydrograph skewness depends on the relative dominance between hillslope and channel network transport processes, where the former ones make the hydrograph positively skewed while the latter tends to make it negatively skewed. More recently, however, the role of river hydraulics in shaping the hydrograph has been highlighted. We present a set of numerical modeling experiments using a hydrodynamic model of river networks in which we investigate how channel hydraulics influence the shape of the hydrograph, particularly its skewness. We further investigate the influence of base flow, rainfall intensity, cross section geometry, and basin scale on unit hydrograph response. We show that river hydraulics has a decisive role because positively skewed hydrographs may occur even when water inputs to the river network are negatively skewed, and in catchments whose width function is also negatively skewed. We show additional results related to the effect of the degree of nonlinearity in the relationship between celerity and discharge, the effects of base flow and rainfall intensity. These further confirm that hydraulic factors may be decisive in determining hydrograph shape. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000423299000034 |
WOS关键词 | KINEMATIC DISPERSION ; HYDROLOGIC RESPONSE ; NETWORK ; RUNOFF ; SCALE ; CHANNEL ; MODEL ; TIME ; NONLINEARITY ; EQUATION |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/21174 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Fed Rio Grande do Sul, Inst Pesquisas Hidraul, Porto Alegre, RS, Brazil; 2.Penn State Univ, University Pk, PA 16802 USA |
推荐引用方式 GB/T 7714 | Collischonn, Walter,Fleischmann, Ayan,Paiva, Rodrigo C. D.,et al. Hydraulic Causes for Basin Hydrograph Skewness[J]. WATER RESOURCES RESEARCH,2017,53(12). |
APA | Collischonn, Walter,Fleischmann, Ayan,Paiva, Rodrigo C. D.,&Mejia, Alfonso.(2017).Hydraulic Causes for Basin Hydrograph Skewness.WATER RESOURCES RESEARCH,53(12). |
MLA | Collischonn, Walter,et al."Hydraulic Causes for Basin Hydrograph Skewness".WATER RESOURCES RESEARCH 53.12(2017). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论