干旱区生态环境知识资源中心(Arid): Rainfall Intensity-Duration-Frequency Curves Using Cluster and Regional Frequency Analyses

Arid

DOI	10.1061/JHYEFF.HEENG-6167
	Rainfall Intensity-Duration-Frequency Curves Using Cluster and Regional Frequency Analyses
	Iresh, Attidiyage Don Shashika; Obeysekera, Jayantha; Athapattu, Bandunee Champika Liyanage; Fernando, W. C. D. K.
通讯作者	Obeysekera, J
来源期刊	JOURNAL OF HYDROLOGIC ENGINEERING
ISSN	1084-0699
EISSN	1943-5584
出版年	2024
卷号	29 期号:5
英文摘要	This study exemplifies the need for updated intensity-duration-frequency curves in Sri Lanka to better reflect current climate conditions. The coupled use of cluster analysis and regional frequency analysis was effective for identifying 11 meteorologically homogeneous regions, leading to the development of new regional intensity-duration-frequency curves. Data screening techniques identified reliable daily and hourly maximum rainfall records, enabling the classification of Sri Lanka into these regions. The regions capture the varying rainfall patterns across the country, from wet zones to arid zones. The curves were constructed for return periods ranging from 2 to 200 years for the selected meteorologically homogeneous regions covering durations up to 72 h. The curves provide updated empirical formulas for estimating rainfall intensity for different durations and return periods, crucial for hydrological designs. Comparison with previous intensity-duration-frequency curves highlights significant differences, especially in short-term intensities, likely due to recent climate variability. The newly developed regional intensity-duration-frequency curves are recommended for water resource management projects, although the study suggests further analysis over longer periods with additional data for enhanced accuracy. Overall, the study fills a long-standing need for updated intensity-duration-frequency relationships in Sri Lanka.
英文关键词	Regional intensity-duration-frequency (IDF) Cluster analysis Regional frequency analysis Discordancy Heterogeneity
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001291950500011
WOS关键词	IDF CURVES ; EXTREME PRECIPITATION ; RIVER-BASIN ; FRAMEWORK ; DROUGHT ; ORDER ; CITY
WOS类目	Engineering, Civil ; Environmental Sciences ; Water Resources
WOS研究方向	Engineering ; Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/404540
推荐引用方式 GB/T 7714	Iresh, Attidiyage Don Shashika,Obeysekera, Jayantha,Athapattu, Bandunee Champika Liyanage,et al. Rainfall Intensity-Duration-Frequency Curves Using Cluster and Regional Frequency Analyses[J],2024,29(5).
APA	Iresh, Attidiyage Don Shashika,Obeysekera, Jayantha,Athapattu, Bandunee Champika Liyanage,&Fernando, W. C. D. K..(2024).Rainfall Intensity-Duration-Frequency Curves Using Cluster and Regional Frequency Analyses.JOURNAL OF HYDROLOGIC ENGINEERING,29(5).
MLA	Iresh, Attidiyage Don Shashika,et al."Rainfall Intensity-Duration-Frequency Curves Using Cluster and Regional Frequency Analyses".JOURNAL OF HYDROLOGIC ENGINEERING 29.5(2024).