Application of non-parametric approaches to identify trend in streamflow during 1976–2007 (Naula watershed)
| Autor: | Chow Ming Fai, Haitham Abdulmohsin Afan, Anurag Malik, Anil Kumar, Ahmed El-Shafie, Ali Najah Ahmed, Ahmed Sefelnasr, Mohsen Sherif |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Mann-Kendall test
Watershed 020209 energy General Engineering Nonparametric statistics Magnitude (mathematics) 02 engineering and technology Innovative-Şen trend method Sen-slope method Engineering (General). Civil engineering (General) 01 natural sciences Hazard 010305 fluids & plasmas Water resources Streamflow 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Environmental science Catchment area Physical geography Temporal trend TA1-2040 Scale (map) Naula watershed |
| Zdroj: | Alexandria Engineering Journal, Vol 59, Iss 3, Pp 1595-1606 (2020) |
| ISSN: | 1110-0168 |
| Popis: | The identification of trends in hydrological data is crucial for sustainable planning and management of water resources under the climate-change scenario. This research, identify the long-term temporal trend and magnitude (m3/s/time scale) in monthly, seasonal, and annual streamflow by employing three non-parametric approaches conventional Mann-Kendall (MK), Innovative-Sen trend (IST), and Sen-slope (SS) on 5% level of significance. The monthly streamflow data of 32-years (1976–2007) were recorded at Naula and Kedar stations positioned in the upper Ramganga River catchment (RRC), Uttarakhand State (India). Results of scrutiny reveal a significant negative trend in 17 time-series was detected by conventional MK test, and significant positive/negative trend in 1/30 time-series was inspected by the IST method with changing magnitude over monthly, seasonal, and annual scales at both stations, respectively. Furthermore, a comparison among results of the MK and IST showed that the IST method examined the unseen trend that cannot be detected by the MK technique at the Naula watershed. The pattern of trend detected on annual, seasonal, and monthly time-scales by three non-parametric approaches can help the water resources management authorities and hydrologists to comprehend the hazard and vulnerability under climate-change scenario over the study catchment area. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|