Application of physiographic soil erosion–deposition model in estimating sediment flushing efficiency of empty storage
| Autor: | Ching-Nuo Chen |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Hydrology
Spillway Watershed 010504 meteorology & atmospheric sciences 0208 environmental biotechnology Sediment Storm 02 engineering and technology 01 natural sciences Deposition (geology) 020801 environmental engineering Typhoon medicine General Earth and Planetary Sciences Environmental science Flushing medicine.symptom Surface runoff 0105 earth and related environmental sciences |
| Zdroj: | Journal of Earth System Science. 127 |
| ISSN: | 0973-774X 0253-4126 |
| DOI: | 10.1007/s12040-018-0989-1 |
| Popis: | In this study, we developed a physiographic soil erosion–deposition model to simulate sediment yield from a watershed into Agongdian reservoir and sediment flushing to estimate the efficiency of empty flushing. The model was verified using data related to Typhoons Morakot and Fanapi. Thereafter, we calculated the sediment flushing efficiency of empty storage under the conditions of 1- and 2-day storms with seven return periods. The simulated results revealed that the amount of sediment yield from Joushui River watershed was approximately 70% on average, whereas that from Wanglai River watershed was approximately 30%. These results are consistent with those of a government research report, which suggested that the sediment yield figures from Joushui and Wanglai River watersheds were 72 and 28%, respectively. Furthermore, the efficiency of empty flushing was more than 55% when using the shaft spillway pipe, suggesting that the model can be applied to estimate sediment yield and flushing efficiency. |
| Databáze: | OpenAIRE |
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