A bivariate gamma model for drought

被引：22
|
作者：
Nadarajah, Saralees [1 ]
机构：
[1] Univ Manchester, Sch Math, Manchester M60 1QD, Lancs, England
来源：
WATER RESOURCES RESEARCH | 2007年 / 43卷 / 08期
关键词：
D O I：
10.1029/2006WR005641
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
[1] A drought application is described by deriving the exact distributions of the sum X + Y and the ratio X/( X + Y) and the corresponding moment properties when X and Y are drought duration and nondrought duration, respectively. The values of X and Y are modeled by a bivariate gamma distribution. Drought data from the State of Nebraska are used.
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页数：6
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