DOI: 10.5194/hess-21-5315-2017
Scopus记录号: 2-s2.0-85032288026
论文题名: Consistency assessment of rating curve data in various locations using Bidirectional Reach (BReach)
作者: Van Eerdenbrugh K ; , Van Hoey S ; , Coxon G ; , Freer J ; , Verhoest N ; E ; C
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2017
卷: 21, 期: 10 起始页码: 5315
结束页码: 5337
语种: 英语
Scopus关键词: Hydraulic models
; Rating
; Stream flow
; Time series analysis
; Current situation
; Data consistency
; Historical changes
; Model evaluation
; Operational hydrologies
; Regional information
; Reliable assessment
; Systematic deviation
; Uncertainty analysis
; assessment method
; data set
; discharge
; estimation method
; hydrological modeling
; model validation
; performance assessment
; rating curve
; river basin
; spatiotemporal analysis
; Belgium
; New Zealand
; United Kingdom
英文摘要: When estimating discharges through rating curves, temporal data consistency is a critical issue. In this research, consistency in stage-discharge data is investigated using a methodology called Bidirectional Reach (BReach), which departs from a (in operational hydrology) commonly used definition of consistency. A period is considered to be consistent if no consecutive and systematic deviations from a current situation occur that exceed observational uncertainty. Therefore, the capability of a rating curve model to describe a subset of the (chronologically sorted) data is assessed in each observation by indicating the outermost data points for which the rating curve model behaves satisfactorily. These points are called the maximum left or right reach, depending on the direction of the investigation. This temporal reach should not be confused with a spatial reach (indicating a part of a river). Changes in these reaches throughout the data series indicate possible changes in data consistency and if not resolved could introduce additional errors and biases. In this research, various measurement stations in the UK, New Zealand and Belgium are selected based on their significant historical ratings information and their specific characteristics related to data consistency. For each country, regional information is maximally used to estimate observational uncertainty. Based on this uncertainty, a BReach analysis is performed and, subsequently, results are validated against available knowledge about the history and behavior of the site. For all investigated cases, the methodology provides results that appear to be consistent with this knowledge of historical changes and thus facilitates a reliable assessment of (in)consistent periods in stage-discharge measurements. This assessment is not only useful for the analysis and determination of discharge time series, but also to enhance applications based on these data (e.g., by informing hydrological and hydraulic model evaluation design about consistent time periods to analyze). © 2017 Author(s). This work is distributed under the Creative Commons Attribution 3.0 License. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79019
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Laboratory of Hydrology and Water Management, Ghent University, Coupure Links 653, Ghent, Belgium; Research Institute for Nature and Forest (INBO), Kliniekstraat 25, Brussels, Belgium; School of Geographical Sciences, University of Bristol, University Road, Bristol, United Kingdom
Recommended Citation:
Van Eerdenbrugh K,, Van Hoey S,, Coxon G,et al. Consistency assessment of rating curve data in various locations using Bidirectional Reach (BReach)[J]. Hydrology and Earth System Sciences,2017-01-01,21(10)