Browsing by Author "Sai Hin Lai"

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    Analysis of rainfall events over Peninsular Malaysia
    (Wiley, 2016) Ren Jie Chin; Sai Hin Lai; Kian Boon Chang; Faridah Othman; Wan Zurina Wan Jaafar
    In this study the data collected by 16 automatic rainfall stations distributed uniformly across Peninsular Malaysia are analysed using a Rainfall Event Mining Tool (RainEMT) developed by the authors in Microsoft Access, using Visual Basic for Applications. RainEMT allows the easy extraction of large-scale rainfall event data such as the total number of yearly or monthly rainfall events, annual maximum rainfall or annual maxima series, and event total rainfall, with threshold selection from a large time series rainfall dataset. The rainfall events are separated by a user-defined minimum inter-event time (MIT).
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    Modelling the flood vulnerability of deltaic Kuching City, Malaysia
    (Springer, 2011) Darrien Yau Seng Mah; Frederik Josep Putuhena; Sai Hin Lai
    The main objective of this writing is to present a practical way to envisage the flood vulnerability in deltaic region, particularly on the concern of sea level rise. Kuching city of Malaysia is established on banks of Sarawak River, 30 km from the sea. Therefore, it is subjected to fluvial and tidal floods.
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    Relationship between minimum inter-event time and the number of rainfall events in Peninsular Malaysia
    (Wiley, 2016) Ren Jie Chin; Sai Hin Lai; Kian Boon Chang; Wan Zurina Wan Jaafar; Faridah Othman
    The minimum inter-event time (MIT) between two wet periods has to be set in order to separate rainfall events. The objective of this study is to analyse the effect of MIT on rainfall events in Peninsular Malaysia. Rainfall event data from 16 rainfall stations, containing the annual number of rainfall events together with the number of events that exceed a certain range of duration values, have been extracted using RainEMT. It is found that the average total number of rainfall events will be higher with smaller MIT values.
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    Water quality assessment and pollution threat to safe water supply for three river basins in Malaysia
    (Elsevier, 2022) Jia Xing Loi; Adeline Seak May Chua; Mohamad Fairus Rabuni; Chee Keong Tan; Sai Hin Lai; Yasuyuki Takemura; Kazuaki Syutsubo
    Pollution in raw water poses increasing threats to safe water supply in many developing countries. Therefore, a comprehensive water quality assessment is essential to provide various stakeholders the information to deal with this problem. This study applies chemometrics to interpret a recent 10-year water quality data from three major river basins (Selangor River basin, Langat River basin, and Klang River basin) frequented by water supply disruptions in Selangor, Malaysia.