Validation of hershfield probable maximum precipitation estimation using homogeneous region in Malaysia.
Probable maximum precipitation (PMP) is used to design major hydraulic structures, such as dams and spillways, flood protection works, and nuclear power plants. Long observation data are required for PMP estimates using the Hershfield statistical approach. In Malaysia, the PMP calculated using state...
| Main Authors: | , , |
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| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
2023
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| Subjects: | |
| Online Access: | http://eprints.utm.my/108286/1/RParamasivam2023_ValidationOfHershfieldProbableMaximumPrecipitation.pdf |
| _version_ | 1817854285282541568 |
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| author | Paramasivam, R. Alias, N. E. Lokoman, R. M. |
| author_facet | Paramasivam, R. Alias, N. E. Lokoman, R. M. |
| author_sort | Paramasivam, R. |
| collection | ePrints |
| description | Probable maximum precipitation (PMP) is used to design major hydraulic structures, such as dams and spillways, flood protection works, and nuclear power plants. Long observation data are required for PMP estimates using the Hershfield statistical approach. In Malaysia, the PMP calculated using state boundary is commonly used, but the estimated PMP values are close to historical maximums. Homogeneous regions are regions containing stations with similar rainfall characteristics. Therefore, homogeneous region boundaries could be used for PMP estimations. In this paper, 1-day rainfall data of more than 25 years for 161 stations in Peninsular Malaysia; were analysed to estimate the PMP for 1-day duration based on an appropriate frequency factor by considering homogeneous regions. Using PMP estimates, a generalised graph was prepared to show the spatial distribution of 1-day PMP. The 1-day PMP estimates in Peninsular Malaysia by considering state boundary, varied from 146 to 1364.7 mm and by considering the homogeneous regions, the 1-day PMP estimates varied from 208.5 to 2094 mm. Hence, the PMP considering homogeneous regions is considered more accurate and safe to be used in designs. |
| first_indexed | 2024-12-08T06:55:42Z |
| format | Conference or Workshop Item |
| id | utm.eprints-108286 |
| institution | Universiti Teknologi Malaysia - ePrints |
| language | English |
| last_indexed | 2024-12-08T06:55:42Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | utm.eprints-1082862024-10-28T09:57:52Z http://eprints.utm.my/108286/ Validation of hershfield probable maximum precipitation estimation using homogeneous region in Malaysia. Paramasivam, R. Alias, N. E. Lokoman, R. M. TA Engineering (General). Civil engineering (General) Probable maximum precipitation (PMP) is used to design major hydraulic structures, such as dams and spillways, flood protection works, and nuclear power plants. Long observation data are required for PMP estimates using the Hershfield statistical approach. In Malaysia, the PMP calculated using state boundary is commonly used, but the estimated PMP values are close to historical maximums. Homogeneous regions are regions containing stations with similar rainfall characteristics. Therefore, homogeneous region boundaries could be used for PMP estimations. In this paper, 1-day rainfall data of more than 25 years for 161 stations in Peninsular Malaysia; were analysed to estimate the PMP for 1-day duration based on an appropriate frequency factor by considering homogeneous regions. Using PMP estimates, a generalised graph was prepared to show the spatial distribution of 1-day PMP. The 1-day PMP estimates in Peninsular Malaysia by considering state boundary, varied from 146 to 1364.7 mm and by considering the homogeneous regions, the 1-day PMP estimates varied from 208.5 to 2094 mm. Hence, the PMP considering homogeneous regions is considered more accurate and safe to be used in designs. 2023 Conference or Workshop Item PeerReviewed application/pdf en http://eprints.utm.my/108286/1/RParamasivam2023_ValidationOfHershfieldProbableMaximumPrecipitation.pdf Paramasivam, R. and Alias, N. E. and Lokoman, R. M. (2023) Validation of hershfield probable maximum precipitation estimation using homogeneous region in Malaysia. In: 2nd International Conference on Environmental Sustainability and Resource Security, IC-ENSURES 2022, 8 March 2022 - 9 March 2022, Johor Bahru, Johor, Malaysia - Virtual, Online. http://dx.doi.org/10.1088/1755-1315/1143/1/012009 |
| spellingShingle | TA Engineering (General). Civil engineering (General) Paramasivam, R. Alias, N. E. Lokoman, R. M. Validation of hershfield probable maximum precipitation estimation using homogeneous region in Malaysia. |
| title | Validation of hershfield probable maximum precipitation estimation using homogeneous region in Malaysia. |
| title_full | Validation of hershfield probable maximum precipitation estimation using homogeneous region in Malaysia. |
| title_fullStr | Validation of hershfield probable maximum precipitation estimation using homogeneous region in Malaysia. |
| title_full_unstemmed | Validation of hershfield probable maximum precipitation estimation using homogeneous region in Malaysia. |
| title_short | Validation of hershfield probable maximum precipitation estimation using homogeneous region in Malaysia. |
| title_sort | validation of hershfield probable maximum precipitation estimation using homogeneous region in malaysia |
| topic | TA Engineering (General). Civil engineering (General) |
| url | http://eprints.utm.my/108286/1/RParamasivam2023_ValidationOfHershfieldProbableMaximumPrecipitation.pdf |
| work_keys_str_mv | AT paramasivamr validationofhershfieldprobablemaximumprecipitationestimationusinghomogeneousregioninmalaysia AT aliasne validationofhershfieldprobablemaximumprecipitationestimationusinghomogeneousregioninmalaysia AT lokomanrm validationofhershfieldprobablemaximumprecipitationestimationusinghomogeneousregioninmalaysia |