Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017WR020990 |
Prerequisites for Accurate Monitoring of River Discharge Based on Fixed-Location Velocity Measurements | |
Kastner, K.1; Hoitink, A. J. F.1; Torfs, P. J. J. F.1; Vermeulen, B.2; Ningsih, N. S.3; Pramulya, M.4 | |
2018-02-01 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2018 |
卷号 | 54期号:2页码:1058-1076 |
文章类型 | Article |
语种 | 英语 |
国家 | Netherlands; Indonesia |
英文摘要 | River discharge has to be monitored reliably for effective water management. As river discharge cannot be measured directly, it is usually inferred from the water level. This practice is unreliable at places where the relation between water level and flow velocity is ambiguous. In such a case, the continuous measurement of the flow velocity can improve the discharge prediction. The emergence of horizontal acoustic Doppler current profilers (HADCPs) has made it possible to continuously measure the flow velocity. However, the profiling range of HADCPs is limited, so that a single instrument can only partially cover a wide cross section. The total discharge still has to be determined with a model. While the limitations of rating curves are well understood, there is not yet a comprehensive theory to assess the accuracy of discharge predicted from velocity measurements. Such a theory is necessary to discriminate which factors influence the measurements, and to improve instrument deployment as well as discharge prediction. This paper presents a generic method to assess the uncertainty of discharge predicted from range-limited velocity profiles. The theory shows that a major source of error is the variation of the ratio between the local and cross-section-averaged velocity. This variation is large near the banks, where HADCPs are usually deployed and can limit the advantage gained from the velocity measurement. We apply our theory at two gauging stations situated in the Kapuas River, Indonesia. We find that at one of the two stations the index velocity does not outperform a simple rating curve. |
英文关键词 | discharge index velocity velocity profile rating curve Indonesia Kapuas River |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000428474500022 |
WOS关键词 | FLOW ; WAKE ; LAW |
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/21421 |
专题 | 资源环境科学 |
作者单位 | 1.Wageningen Univ & Res, Hydrol & Quantitat Water Management Grp, Wageningen, Netherlands; 2.Univ Twente, Fac Engn Technol Water Engn & Management, Enschede, Netherlands; 3.Bandung Inst Technol, Fac Earth Sci & Technol, Res Grp Oceanog, Bandung, Indonesia; 4.Tanjungpura Univ, Fac Agr, Pontianak, Indonesia |
推荐引用方式 GB/T 7714 | Kastner, K.,Hoitink, A. J. F.,Torfs, P. J. J. F.,et al. Prerequisites for Accurate Monitoring of River Discharge Based on Fixed-Location Velocity Measurements[J]. WATER RESOURCES RESEARCH,2018,54(2):1058-1076. |
APA | Kastner, K.,Hoitink, A. J. F.,Torfs, P. J. J. F.,Vermeulen, B.,Ningsih, N. S.,&Pramulya, M..(2018).Prerequisites for Accurate Monitoring of River Discharge Based on Fixed-Location Velocity Measurements.WATER RESOURCES RESEARCH,54(2),1058-1076. |
MLA | Kastner, K.,et al."Prerequisites for Accurate Monitoring of River Discharge Based on Fixed-Location Velocity Measurements".WATER RESOURCES RESEARCH 54.2(2018):1058-1076. |
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