On the definition of droughts

In this paper, several considerations for developing a practical, analytical definition of droughts are discussed

John A. Dracup

2008

Scholarcy highlights

  • In this paper, several considerations for developing a practical, analytical definition of droughts are discussed
  • Several considerations for developing a practical, analytical definition of droughts are discussed. These considerations include selection of the nature of the water deficit to be studied; selection of the averaging period used to discretize a continuous time series; selection of the truncation level used to separate droughts from the remainder of the time series; and method of regionalization or standardization. These decisions are discussed in terms of their impacts on various approaches to drought frequency analysis
  • Drought events are considered to be composed of duration, magnitude, and severity
  • An application of the proposed drought definition procedure is presented for the case of a frequency analysis of multiyear hydrologic droughts

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