Regional frequency analysis of extreme rainfalls in Hong Kong

Man Wong, Yeou-Koung Tung

研究成果: Conference contribution同行評審

摘要

In this study, regional frequency analysis of extreme rainfalls in Hong Kong is presented using the index-event L-moment based method of Hosking and Wallis. Data analyzed are annual maximum rainfall series of different durations (from 5-min to 1440-min) at a total of 122 automatic raingauges with record lengths varying from 10 to 26 years. The entire territory of Hong Kong was divided into three to five hydrologically homogeneous sub-regions according to geographical attributes (latitude, longitude, and elevation) and mean annual rainfall. Goodness-of-fit Z-test and L-moment ratio diagram were used to select the best-fit regional distributions from five three-parameter probability distributions (GEV, GLO, GPA, LN3, and PE3) and the five-parameter Wakeby distribution. Several factors associated with the sample data used in regional frequency analysis (varying site record lengths, number of sites within region, and regional heterogeneity) were also studied through Monte Carlo simulation.

原文English
主出版物標題World Environmental and Water Resources Congress 2013
主出版物子標題Showcasing the Future - Proceedings of the 2013 Congress
頁面3276-3285
頁數10
DOIs
出版狀態Published - 18 十一月 2013
事件World Environmental and Water Resources Congress 2013: Showcasing the Future - Cincinnati, OH, United States
持續時間: 19 五月 201323 五月 2013

出版系列

名字World Environmental and Water Resources Congress 2013: Showcasing the Future - Proceedings of the 2013 Congress

Conference

ConferenceWorld Environmental and Water Resources Congress 2013: Showcasing the Future
國家United States
城市Cincinnati, OH
期間19/05/1323/05/13

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