Regional flood frequency analysis for Southwest Peninsular Malaysia by LQ-moments

A. Shabri, Abdul Aziz Jemain

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

A regional flood frequency analysis based on the L-moments procedure has been applied successfully for modelling floods. In this study, we propose an alternative regional frequency analysis by using LQ-moments. Annual maximum stream flow data observed at 12 sites in Southwest Peninsular Malaysia are investigated. Three probability distributions, the generalised extreme value (GEV), generalised Pareto (GPA) and generalised logistic (GLO) distributions, were derived and used to develop the regional frequency analysis procedure. The moment ratio diagram and Z-test were developed using LQ-moments to determine the best fitting distribution. A comparative study was performed between LQ-moments and L-moments for the study area. Analyses showed that the GLO and GEV distributions were suitable for a homogeneous region based on L-moments and LQ-moments. The robustness of the designated regional frequency distributions was further investigated by assessing the relative root mean square error (RRMSE) and regional average relative bias (RBIAS) by Monte Carlo.

Original languageEnglish
Pages (from-to)360-371
Number of pages12
JournalJournal of Flood Risk Management
Volume6
Issue number4
DOIs
Publication statusPublished - Dec 2013

Fingerprint

frequency analysis
flood frequency
Malaysia
Logistics
natural disaster
regional analysis
Stream flow
Mean square error
Probability distributions
logistics
analysis procedure
frequency distribution
streamflow
comparative study
diagram
distribution
trend
modeling

Keywords

  • L-moments
  • LQ-moments
  • Regional frequency analysis
  • Stream flow

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Environmental Engineering
  • Water Science and Technology
  • Geography, Planning and Development

Cite this

Regional flood frequency analysis for Southwest Peninsular Malaysia by LQ-moments. / Shabri, A.; Jemain, Abdul Aziz.

In: Journal of Flood Risk Management, Vol. 6, No. 4, 12.2013, p. 360-371.

Research output: Contribution to journalArticle

Shabri, A. ; Jemain, Abdul Aziz. / Regional flood frequency analysis for Southwest Peninsular Malaysia by LQ-moments. In: Journal of Flood Risk Management. 2013 ; Vol. 6, No. 4. pp. 360-371.
@article{d4ee3d707db14d91b643326e7badc631,
title = "Regional flood frequency analysis for Southwest Peninsular Malaysia by LQ-moments",
abstract = "A regional flood frequency analysis based on the L-moments procedure has been applied successfully for modelling floods. In this study, we propose an alternative regional frequency analysis by using LQ-moments. Annual maximum stream flow data observed at 12 sites in Southwest Peninsular Malaysia are investigated. Three probability distributions, the generalised extreme value (GEV), generalised Pareto (GPA) and generalised logistic (GLO) distributions, were derived and used to develop the regional frequency analysis procedure. The moment ratio diagram and Z-test were developed using LQ-moments to determine the best fitting distribution. A comparative study was performed between LQ-moments and L-moments for the study area. Analyses showed that the GLO and GEV distributions were suitable for a homogeneous region based on L-moments and LQ-moments. The robustness of the designated regional frequency distributions was further investigated by assessing the relative root mean square error (RRMSE) and regional average relative bias (RBIAS) by Monte Carlo.",
keywords = "L-moments, LQ-moments, Regional frequency analysis, Stream flow",
author = "A. Shabri and Jemain, {Abdul Aziz}",
year = "2013",
month = "12",
doi = "10.1111/jfr3.12023",
language = "English",
volume = "6",
pages = "360--371",
journal = "Journal of Flood Risk Management",
issn = "1753-318X",
publisher = "Blackwell Publishing",
number = "4",

}

TY - JOUR

T1 - Regional flood frequency analysis for Southwest Peninsular Malaysia by LQ-moments

AU - Shabri, A.

AU - Jemain, Abdul Aziz

PY - 2013/12

Y1 - 2013/12

N2 - A regional flood frequency analysis based on the L-moments procedure has been applied successfully for modelling floods. In this study, we propose an alternative regional frequency analysis by using LQ-moments. Annual maximum stream flow data observed at 12 sites in Southwest Peninsular Malaysia are investigated. Three probability distributions, the generalised extreme value (GEV), generalised Pareto (GPA) and generalised logistic (GLO) distributions, were derived and used to develop the regional frequency analysis procedure. The moment ratio diagram and Z-test were developed using LQ-moments to determine the best fitting distribution. A comparative study was performed between LQ-moments and L-moments for the study area. Analyses showed that the GLO and GEV distributions were suitable for a homogeneous region based on L-moments and LQ-moments. The robustness of the designated regional frequency distributions was further investigated by assessing the relative root mean square error (RRMSE) and regional average relative bias (RBIAS) by Monte Carlo.

AB - A regional flood frequency analysis based on the L-moments procedure has been applied successfully for modelling floods. In this study, we propose an alternative regional frequency analysis by using LQ-moments. Annual maximum stream flow data observed at 12 sites in Southwest Peninsular Malaysia are investigated. Three probability distributions, the generalised extreme value (GEV), generalised Pareto (GPA) and generalised logistic (GLO) distributions, were derived and used to develop the regional frequency analysis procedure. The moment ratio diagram and Z-test were developed using LQ-moments to determine the best fitting distribution. A comparative study was performed between LQ-moments and L-moments for the study area. Analyses showed that the GLO and GEV distributions were suitable for a homogeneous region based on L-moments and LQ-moments. The robustness of the designated regional frequency distributions was further investigated by assessing the relative root mean square error (RRMSE) and regional average relative bias (RBIAS) by Monte Carlo.

KW - L-moments

KW - LQ-moments

KW - Regional frequency analysis

KW - Stream flow

UR - http://www.scopus.com/inward/record.url?scp=84887563009&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84887563009&partnerID=8YFLogxK

U2 - 10.1111/jfr3.12023

DO - 10.1111/jfr3.12023

M3 - Article

VL - 6

SP - 360

EP - 371

JO - Journal of Flood Risk Management

JF - Journal of Flood Risk Management

SN - 1753-318X

IS - 4

ER -