Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018WR023509 |
The Influence of Spatial Variability of Width Functions on Regional Peak how Regressions | |
Perez, Gabriel; Mantilla, Ricardo; Krajewski, Witold F. | |
2018-10-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2018 |
卷号 | 54期号:10页码:7651-7669 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The authors investigated the relation between the width function and the regional variability of peak flows. The authors explored 34 width function descriptors (WFDs), in addition to drainage area, as potential candidates for explaining the regional peak flow variability. First, using hydrologic simulations of uniform rainfall events with variable rainfall duration and constant rainfall intensity for 147 watersheds across the state of Iowa, they demonstrated that WFDs are capable of explaining spatial variability of peak flows for individual rainfall-runoff events under idealized physical conditions. This theoretical exercise indicates that the inclusion of WFDs should drastically improve regional peak flow estimates with a reduction of the root mean square error by more than half in comparison with a regression model based on drainage area only. The authors followed the simulation with an analysis of estimated peak flow quantiles from 94 stream gauges in Iowa to determine if the WFDs have a similar explanatory power. The correlations between WFDs and peak flow quantiles are not as high as those found for simulated events, which indicates that results from event scale simulations do not translate directly to peak flow quantiles. The spatial variability of peak flow quantiles is influenced by other physical and statistical processes that are also variable in space. These results are consistent with recent work on event-based scaling of peak flows that shows that the spatiotemporal variability of flood mechanisms is larger than the one expected from geomorphology alone. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000450726000030 |
WOS关键词 | FLOOD-FREQUENCY-ANALYSIS ; UNIT-HYDROGRAPH ; CHANNEL ; BASIN ; RUNOFF ; MODEL ; EXTRACTION ; CATCHMENTS ; FRAMEWORK ; NETWORKS |
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/21324 |
专题 | 资源环境科学 |
作者单位 | Univ Iowa, Dept Civil & Environm Engn, IIHR Hydrosci & Engn, Iowa City, IA 52242 USA |
推荐引用方式 GB/T 7714 | Perez, Gabriel,Mantilla, Ricardo,Krajewski, Witold F.. The Influence of Spatial Variability of Width Functions on Regional Peak how Regressions[J]. WATER RESOURCES RESEARCH,2018,54(10):7651-7669. |
APA | Perez, Gabriel,Mantilla, Ricardo,&Krajewski, Witold F..(2018).The Influence of Spatial Variability of Width Functions on Regional Peak how Regressions.WATER RESOURCES RESEARCH,54(10),7651-7669. |
MLA | Perez, Gabriel,et al."The Influence of Spatial Variability of Width Functions on Regional Peak how Regressions".WATER RESOURCES RESEARCH 54.10(2018):7651-7669. |
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