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Flood frequency analysis for Sarawak using Weibull, Gringorten and L-Moments formula

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Main Authors: Onni Suhaiza, Selaman, Dr., Salim, Said, Prof. Dr., Frederik, Josep Putuhena, Prof. Dr.
Other Authors: onni70@yahoo.com
Format: Article
Language:English
Published: The Institution of Engineers, Malaysia 2011
Subjects:
Gringorten
Gumbel distribution
L-Moments
Weibull
Online Access:http://dspace.unimap.edu.my/xmlui/handle/123456789/13763
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spelling my.unimap-137632011-09-14T17:47:39Z Flood frequency analysis for Sarawak using Weibull, Gringorten and L-Moments formula Onni Suhaiza, Selaman, Dr. Salim, Said, Prof. Dr. Frederik, Josep Putuhena, Prof. Dr. onni70@yahoo.com ssalim@feng.unimas.my Gringorten Gumbel distribution L-Moments Weibull Link to publisher's homepage at http://www.myiem.org.my/ The objective of this study is to determine the magnitude and frequency of floods for Sarawak using Gumbel distribution. Nineteen stations were selected for the study based on the criteria stated in Hydrological Procedure No. 4 (HP4). The probability plot and flood-frequency curves by Gumbel distribution of each individual station are prepared using three different plotting position formulas (i.e. Weibull, Gringorten and L-Moments). From the results and analysis of each individual station, Gumbel distribution based on L-Moments always give the least ratio of peak discharge of T year’s recurrence interval over mean annual flood (QT/MAF) but at some stations, it gives unreasonable return period (T) and reduced variate (y) range. The appropriateness of L-moments with Gumbel distribution had some limitation. It is only good for small samples data. If compared between Gumbel distribution by Weibull formula and Gumbel distribution by Gringorten formula, the latter is better because it gives the least ratio (which is in agreement with the literature). Therefore, it could be concluded that for some stations, LMoments method is the best, but since L-Moments method had some limitations, Gringorten formula is still the best plotting position method to be applied with Gumbel distribution. 2011-09-14T17:47:39Z 2011-09-14T17:47:39Z 2007-03 Article The Journal of the Institution of Engineers, Malaysia, vol. 68(1), 2007, pages 43-52 0126-513X http://myiem.org.my/content/iem_journal_2007-178.aspx http://hdl.handle.net/123456789/13763 en The Institution of Engineers, Malaysia
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Gringorten
Gumbel distribution
L-Moments
Weibull
spellingShingle Gringorten
Gumbel distribution
L-Moments
Weibull
Onni Suhaiza, Selaman, Dr.
Salim, Said, Prof. Dr.
Frederik, Josep Putuhena, Prof. Dr.
Flood frequency analysis for Sarawak using Weibull, Gringorten and L-Moments formula
description Link to publisher's homepage at http://www.myiem.org.my/
author2 onni70@yahoo.com
author_facet onni70@yahoo.com
Onni Suhaiza, Selaman, Dr.
Salim, Said, Prof. Dr.
Frederik, Josep Putuhena, Prof. Dr.
format Article
author Onni Suhaiza, Selaman, Dr.
Salim, Said, Prof. Dr.
Frederik, Josep Putuhena, Prof. Dr.
author_sort Onni Suhaiza, Selaman, Dr.
title Flood frequency analysis for Sarawak using Weibull, Gringorten and L-Moments formula
title_short Flood frequency analysis for Sarawak using Weibull, Gringorten and L-Moments formula
title_full Flood frequency analysis for Sarawak using Weibull, Gringorten and L-Moments formula
title_fullStr Flood frequency analysis for Sarawak using Weibull, Gringorten and L-Moments formula
title_full_unstemmed Flood frequency analysis for Sarawak using Weibull, Gringorten and L-Moments formula
title_sort flood frequency analysis for sarawak using weibull, gringorten and l-moments formula
publisher The Institution of Engineers, Malaysia
publishDate 2011
url http://dspace.unimap.edu.my/xmlui/handle/123456789/13763
_version_ 1643790959020867584
score 13.214268

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