| Autor: |
Rianna, M., Lombardo, F., Boccanera, B., Giglioni, M. |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2016, Vol. 1738 Issue 1, p430005-1-430005-4, 4p, 2 Graphs, 1 Map |
| Abstrakt: |
Flow duration curves (FDCs) are commonly used for various hydrological applications, particularly for the sustainable management of water resources. These curves can be easily derived if observed streamflow time series data are available. However, flow gauge sites are scarce or non-existing in many river basins worldwide. To overcome this problem, various regionalization approaches to predict FDCs have been proposed, based, to date, on geomorphological descriptors of catchments. However, regional analyses may fail to adequately represent the variability of the flow regime, especially in small catchments. In this study, a regional, dimensionless FDC is developed for a hydrologically homogeneous region in Central Italy and used to estimate the FDC in 10 catchments within the region. In particular, we aim to construct a representative, site-specific FDC by combining regional flow data with instantaneous flow measurements. We conducted an investigation to determine the number of measurements that are needed to estimate a reliable FDC from the regional curve for each catchment. From instantaneous measures we derive a mean value that is used calculate the site-specific FDC. To obtain this mean value, we progressively increase the sample size thus forming various data sets. A Monte Carlo approach is used to evaluate the median value for the single set, and efficiency parameters are then calculated to determine if a reasonable sampling requirement exists. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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