River flow modelling using nonparametric functional data analysis
| Autor: | Alejandro Quintela-del-Río, Mario Francisco-Fernández |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Environmental Engineering
0208 environmental biotechnology Geography Planning and Development Nonparametric statistics Functional data analysis Estimator Context (language use) 02 engineering and technology 01 natural sciences 020801 environmental engineering 010104 statistics & probability Statistics Econometrics Statistics::Methodology Autoregressive integrated moving average 0101 mathematics Safety Risk Reliability and Quality Extreme value theory Water Science and Technology Parametric statistics Mathematics Quantile |
| Zdroj: | Journal of Flood Risk Management. 11:S902-S915 |
| ISSN: | 1753-318X |
| DOI: | 10.1111/jfr3.12282 |
| Popis: | Time series and extreme value analyses are two statistical approaches usually applied to study hydrological data. Classical techniques, such as ARIMA models (in the case of mean flow predictions), and parametric generalised extreme value (GEV) fits and nonparametric extreme value methods (in the case of extreme value theory) have been usually employed in this context. In this paper, nonparametric functional data methods are used to perform mean monthly flow predictions and extreme value analysis, which are important for flood risk management. These are powerful tools that take advantage of both, the functional nature of the data under consideration and the flexibility of nonparametric methods, providing more reliable results. Therefore, they can be useful to prevent damage caused by floods and to reduce the likelihood and/or the impact of floods in a specific location. The nonparametric functional approaches are applied to flow samples of two rivers in the U.S. In this way, monthly mean flow is predicted and flow quantiles in the extreme value framework are estimated using the proposed methods. Results show that the nonparametric functional techniques work satisfactorily, generally outperforming the behaviour of classical parametric and nonparametric estimators in both settings. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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