Hydrological System Complexity Induces a Drought Frequency Paradox

A drought frequency formula

The important elements of a drought phenomenon are the longest duration and the largest severity for a desired return period. These elements form a basis for designing water storage systems to cope with droughts. At times, a third element, drought intensity, is also used and is defined as the ratio of severity to duration. The commonly available statistics for the causative drought variables su...

Assessing water resource system vulnerability to unprecedented hydrological drought using copulas to characterize drought duration and deficit

Global climate models suggest an increase in evapotranspiration, changing storm tracks, and moisture delivery in many parts of the world, which are likely to cause more prolonged and severe drought, yet the weakness of climate models in modeling persistence of hydroclimatic variables and the uncertainties associated with regional climate projections mean that impact assessments based on climate...

Hydrological Aspects of the Drought Event in Nigeria-1972/1973

The drought event which reached severe levels in 1972 and 1973 caused a major disaster in the Sahalian and sub-Sahalian zones in Africa. This disaster has drawn attention to the need for data surveys and detailed studies for meaningful long-term measures to combat the effects of future droughts. The study reported in this paper is an attempt to assess the hydrological aspects of the drought eve...

Provide a model for prediction of hydrological drought in Karoon-1 basin

Multivariate quantiles in hydrological frequency analysis

2 Several hydrological phenomena are described by two or more correlated characteristics. 3 These dependent characteristics should be considered jointly to be more representative of the 4 multivariate nature of the phenomenon. Consequently, probabilities of occurrence cannot be 5 estimated on the basis of univariate frequency analysis (FA). The quantile, representing the value 6 of the variable...