Bypassing Determination of Time of Concentration
| Autor: | Arie Ben-Zvi |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Hydrology
Watershed area Interval (mathematics) Regression Hydrology (agriculture) Statistics Environmental Chemistry Surface runoff Nonlinear regression Time of concentration Intensity (heat transfer) General Environmental Science Water Science and Technology Civil and Structural Engineering Mathematics |
| Zdroj: | Journal of Hydrologic Engineering. 18:1674-1683 |
| ISSN: | 1943-5584 1084-0699 |
| Popis: | Reanalysis of the records, upon which the 120-year-old Rational Formula is based, reveals that the published linear relationship between rainfall duration and the ratio of peak discharge to the product of rainfall intensity and watershed area can also be replaced by a logarithmic regression. Such a regression is found, with reasonable correlation, suitable for two-dimensional laboratory watersheds, for four experimental urban watersheds, and for five small watersheds in Israel. Combining this regression with a power-law regression between rainfall intensity and duration, associated with any given recurrence interval, yields a general relationship between the variables. From this and through simple mathematical operations, the maximum discharge associated with that recurrence interval is determined. The variables in the new equation are watershed area and the empirical parameters of the regressions. Application of this equation bypasses determination of the highly influential time of concentration,... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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