Statistical analysis of annual maximum daily rainfall for Nelspruit and its environs

Jàmbá: Journal of Disaster Risk Studies

 
 
Field Value
 
Title Statistical analysis of annual maximum daily rainfall for Nelspruit and its environs
 
Creator Masereka, Eric M. Ochieng, George M. Snyman, Jacques
 
Subject engineering; civil engineering annual maximum daily rainfall; generalized extreme value distribution; generalized logistic distribution; goodness of fit tests; empirical frequency analysis; best fit distribution function
Description Nelspruit and its environs frequently experience extreme high annual maximum daily rainfall (AMDR) events resulting in flood hazards. These flood hazards have caused flood disasters that have resulted in loss of property and lives. The main objective of this study was to carry out statistical analysis of extreme high AMDR events that have caused flood hazards, which in turn have caused flood disasters in Nelspruit and its environs. Empirical continuous probability distribution functions (ECPDF) and theoretical continuous probability distribution functions (TCPDF) were applied to carry out the statistical analysis of the extreme high AMDR events. Annual maximum daily rainfall event of magnitude 100 mm was identified as a threshold. Events 100 mm were considered as extreme high events resulting in flood disasters. The results of empirical frequency analysis showed that the return period of flood disasters was 10 years. The occurrence probability of flood disaster event at least once in 1, 2, 3, 4 and 5 years was 0.10, 0.19, 0.27, 0.34 and 0.41, respectively. Generalised logistic PDF was identified as the best-fit theoretical PDF for statistical analysis of the extreme high AMDR events in Nelspruit and its environs. The results of this study contributed to the understanding of frequency and magnitude of extreme high AMDR events that could lead to flood disasters. The results could be applied in developing flood disaster management strategies in Nelspruit and its environs.
 
Publisher AOSIS
 
Contributor
Date 2018-03-26
 
Type info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion — —
Format text/html application/epub+zip application/xml application/pdf
Identifier 10.4102/jamba.v10i1.499
 
Source Jàmbá: Journal of Disaster Risk Studies; Vol 10, No 1 (2018); 10 pages 2072-845X 1996-1421
 
Language eng
 
Relation
The following web links (URLs) may trigger a file download or direct you to an alternative webpage to gain access to a publication file format of the published article:

https://jamba.org.za/index.php/jamba/article/view/499/796 https://jamba.org.za/index.php/jamba/article/view/499/795 https://jamba.org.za/index.php/jamba/article/view/499/797 https://jamba.org.za/index.php/jamba/article/view/499/778
 
Coverage Nelspruit and its environs; South Africa — —
Rights Copyright (c) 2018 Eric M. Masereka, George M. Ochieng, Jacques Snyman https://creativecommons.org/licenses/by/4.0
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