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Drought parameters in relation to truncation levels

✍ Scribed by T. C Sharma

Publisher
John Wiley and Sons
Year
2000
Tongue
English
Weight
667 KB
Volume
14
Category
Article
ISSN
0885-6087

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✦ Synopsis

Drought parameters\ namely the longest duration\ largest severity and the intensity have been calculated in relation to the truncation levels ranging from 9 to -9=4 in the standardized domain for the normal\ gamma and log!normal probability distribution functions "PDFs# of the drought variables[ The drought variables taken in the investigation are the annual rainfall and runo} time!series evolving randomly and obeying the Markovian dependence[ The analysis showed that the assumption of independence of the drought duration and intensity works well in deriving the expression for drought severity at various truncation levels[ An estimate of drought intensity has been realized from the concept of the truncated normal distribution of the standardized form of the time!series of drought variables in the normalized domain[ Furthermore the non!normality and the dependence in the time!series have a signi_cant e}ect on the drought parameters at the truncation levels under consideration[

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