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Synthetic Drought Hydrograph
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DOI：10.3390/hydrology10010010.png)
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Droughts are natural disasters with a significant impact on the economy and social life. Prolonged droughts can cause even more damage than floods. The novelty of this work lies in the definition of a synthetic drought hydrograph (SDH) which can be derived at each gaging station of a river network. Based on drought hydrographs (DHs) recorded for a selected gaging station, the SDH is statistically characterized and provides valuable information to water managers regarding available water resources during the drought period. The following parameters of the registered drought hydrograph (DH) are proposed: minimum drought discharge Q(D)(min), drought duration DD and deficit volume V-D. All these parameters depend on the drought threshold Q(T), which is chosen based on either pure hydrological considerations or on socio-economic consequences. For the same statistical parameters of the drought, different shapes of the synthetic drought hydrograph (SDH) can be considered. In addition, the SDH varies according to the probabilities of exceedance of the minimum drought discharge and deficit volume.
Keyword:
drought hydrograph
drought parameters
statistical analysis
shape of the drought hydrograph
synthetic drought hydrograph
期刊
IF:
6.3
论文数:
2.4W
被引数:
9.8W
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