Statistical and trend analysis of annual maximum daily rainfall (AMDR) for Kuching City, Sarawak, Malaysia
Kuching city and its surrounding urban areas frequently experience extreme high annual maximum daily rainfall (AMDR), resulting in flash floods. This study aims to carry out statistical and trend analysis of extreme AMDR events for Kuching Airport rainfall station from 1975 to 2017. From the analysi...
| Main Authors: | , , , , |
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| Format: | Proceedings |
| Language: | English English |
| Published: |
ResearchGate
2023
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| Subjects: | |
| Online Access: | https://eprints.ums.edu.my/id/eprint/38975/1/ABSTRACT.pdf https://eprints.ums.edu.my/id/eprint/38975/2/FULL%20TEXT.pdf |
| _version_ | 1811136392093237248 |
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| author | C. H. J. Bong S. C. Liew M. Neging E. Matthew Ruji D. Gabda |
| author_facet | C. H. J. Bong S. C. Liew M. Neging E. Matthew Ruji D. Gabda |
| author_sort | C. H. J. Bong |
| collection | UMS |
| description | Kuching city and its surrounding urban areas frequently experience extreme high annual maximum daily rainfall (AMDR), resulting in flash floods. This study aims to carry out statistical and trend analysis of extreme AMDR events for Kuching Airport rainfall station from 1975 to 2017. From the analysis, the AMDR records a high variability with a value of 36.9% while January has the highest occurrence of AMDR with 53.5% of the total data. Findings from the linear regression plot have shown that the AMDR has a slight decreasing trend over the past four decades though the trend was insignificant. Based on the drainage design capacity of Kuching city, AMDR of magnitude 180 mm was identified as a threshold. The frequency analysis results showed that the return period of flooding events with daily rainfall exceeding 180 mm was 2.69 years. The occurrence probability of the flood event at least once in 1, 2, 3, 4 and 5 years was 0.37, 0.60, 0.75, 0.84 and 0.90, respectively. This study contributed to understanding the magnitude and frequency of extreme high AMDR which could lead to flooding events in Kuching city. |
| first_indexed | 2024-09-24T00:49:51Z |
| format | Proceedings |
| id | ums.eprints-38975 |
| institution | Universiti Malaysia Sabah |
| language | English English |
| last_indexed | 2024-09-24T00:49:51Z |
| publishDate | 2023 |
| publisher | ResearchGate |
| record_format | dspace |
| spelling | ums.eprints-389752024-06-28T06:57:43Z https://eprints.ums.edu.my/id/eprint/38975/ Statistical and trend analysis of annual maximum daily rainfall (AMDR) for Kuching City, Sarawak, Malaysia C. H. J. Bong S. C. Liew M. Neging E. Matthew Ruji D. Gabda QC81-114 Weights and measures QE521-545 Volcanoes and earthquakes Kuching city and its surrounding urban areas frequently experience extreme high annual maximum daily rainfall (AMDR), resulting in flash floods. This study aims to carry out statistical and trend analysis of extreme AMDR events for Kuching Airport rainfall station from 1975 to 2017. From the analysis, the AMDR records a high variability with a value of 36.9% while January has the highest occurrence of AMDR with 53.5% of the total data. Findings from the linear regression plot have shown that the AMDR has a slight decreasing trend over the past four decades though the trend was insignificant. Based on the drainage design capacity of Kuching city, AMDR of magnitude 180 mm was identified as a threshold. The frequency analysis results showed that the return period of flooding events with daily rainfall exceeding 180 mm was 2.69 years. The occurrence probability of the flood event at least once in 1, 2, 3, 4 and 5 years was 0.37, 0.60, 0.75, 0.84 and 0.90, respectively. This study contributed to understanding the magnitude and frequency of extreme high AMDR which could lead to flooding events in Kuching city. ResearchGate 2023 Proceedings PeerReviewed text en https://eprints.ums.edu.my/id/eprint/38975/1/ABSTRACT.pdf text en https://eprints.ums.edu.my/id/eprint/38975/2/FULL%20TEXT.pdf C. H. J. Bong and S. C. Liew and M. Neging and E. Matthew Ruji and D. Gabda (2023) Statistical and trend analysis of annual maximum daily rainfall (AMDR) for Kuching City, Sarawak, Malaysia. https://www.researchgate.net/publication/364386434_STATISTICAL_AND_TREND_ANALYSIS_OF_ANNUAL_MAXIMUM_DAILY_RAINFALL_AMDR_FOR_KUCHING_CITY_SARAWAK_MALAYSIA |
| spellingShingle | QC81-114 Weights and measures QE521-545 Volcanoes and earthquakes C. H. J. Bong S. C. Liew M. Neging E. Matthew Ruji D. Gabda Statistical and trend analysis of annual maximum daily rainfall (AMDR) for Kuching City, Sarawak, Malaysia |
| title | Statistical and trend analysis of annual maximum daily rainfall (AMDR) for Kuching City, Sarawak, Malaysia |
| title_full | Statistical and trend analysis of annual maximum daily rainfall (AMDR) for Kuching City, Sarawak, Malaysia |
| title_fullStr | Statistical and trend analysis of annual maximum daily rainfall (AMDR) for Kuching City, Sarawak, Malaysia |
| title_full_unstemmed | Statistical and trend analysis of annual maximum daily rainfall (AMDR) for Kuching City, Sarawak, Malaysia |
| title_short | Statistical and trend analysis of annual maximum daily rainfall (AMDR) for Kuching City, Sarawak, Malaysia |
| title_sort | statistical and trend analysis of annual maximum daily rainfall amdr for kuching city sarawak malaysia |
| topic | QC81-114 Weights and measures QE521-545 Volcanoes and earthquakes |
| url | https://eprints.ums.edu.my/id/eprint/38975/1/ABSTRACT.pdf https://eprints.ums.edu.my/id/eprint/38975/2/FULL%20TEXT.pdf |
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