Dez Basin Flood Frequency Analysis
In this research, from data of 26 hydrometric station records and l-moment approach, regional and stational flood frequency of Dez basin was analyzed. For identifying homogeneous regions, Ward hierarchical cluster method was used. The appropriate number of homogeneous regions was determinate from no...
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| Format: | Article |
| Language: | fas |
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Marvdasht Branch, Islamic Azad University
2009-09-01
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| Series: | مهندسی منابع آب |
| Online Access: | https://wej.marvdasht.iau.ir/article_1669_eb68b2f026b5b01e1a250d0419e77acd.pdf |
| _version_ | 1827385561052086272 |
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| author | R R H S A M |
| author_facet | R R H S A M |
| author_sort | R R |
| collection | DOAJ |
| description | In this research, from data of 26 hydrometric station records and l-moment approach, regional and stational flood frequency of Dez basin was analyzed. For identifying homogeneous regions, Ward hierarchical cluster method was used. The appropriate number of homogeneous regions was determinate from nonhomogeneity test and discordancy measure. The Dez Basin was divided into three homogeneous regions. In these regions parameters of the regional frequency distribution were evaluated by the L-moment ratios. The L-moment diagram, goodness of fit test, and plotting position methods were used for the selection of appropriate distribution and plotting position formula. Generalized Extreme-Value distribution and Chegodieve plotting position formula is appropriate for region A, generalized logistic distribution and Greengurten plotting position formula for region B and Generalized Extreme-Value distribution and Greengurten plotting position formula for region C were selected. The relative root mean square error (rRMSE) between observed and estimated data, in all stations, in high return periods is small and in small return periods is vicversa. Regional models evaluated for determination of flood discharge magnitude in different frequency by linear and multiple regression method |
| first_indexed | 2024-03-08T15:28:12Z |
| format | Article |
| id | doaj.art-2cdc81669c6941bc8c028fa29eb1ddfa |
| institution | Directory Open Access Journal |
| issn | 2008-6377 2423-7191 |
| language | fas |
| last_indexed | 2024-03-08T15:28:12Z |
| publishDate | 2009-09-01 |
| publisher | Marvdasht Branch, Islamic Azad University |
| record_format | Article |
| series | مهندسی منابع آب |
| spelling | doaj.art-2cdc81669c6941bc8c028fa29eb1ddfa2024-01-10T07:59:06ZfasMarvdasht Branch, Islamic Azad Universityمهندسی منابع آب2008-63772423-71912009-09-012361701669Dez Basin Flood Frequency AnalysisR R0H S1A M2دانشجوی دکتری هیدرولوژی، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات تهران- استاد دانشگاه آزاد اسلامی، واحد علوم و تحقیقات تهراندانشجوی دکتری هیدرولوژی، دانشگاه آزاد اسلامی واحد علوم و تحقیقات تهرانIn this research, from data of 26 hydrometric station records and l-moment approach, regional and stational flood frequency of Dez basin was analyzed. For identifying homogeneous regions, Ward hierarchical cluster method was used. The appropriate number of homogeneous regions was determinate from nonhomogeneity test and discordancy measure. The Dez Basin was divided into three homogeneous regions. In these regions parameters of the regional frequency distribution were evaluated by the L-moment ratios. The L-moment diagram, goodness of fit test, and plotting position methods were used for the selection of appropriate distribution and plotting position formula. Generalized Extreme-Value distribution and Chegodieve plotting position formula is appropriate for region A, generalized logistic distribution and Greengurten plotting position formula for region B and Generalized Extreme-Value distribution and Greengurten plotting position formula for region C were selected. The relative root mean square error (rRMSE) between observed and estimated data, in all stations, in high return periods is small and in small return periods is vicversa. Regional models evaluated for determination of flood discharge magnitude in different frequency by linear and multiple regression methodhttps://wej.marvdasht.iau.ir/article_1669_eb68b2f026b5b01e1a250d0419e77acd.pdf |
| spellingShingle | R R H S A M Dez Basin Flood Frequency Analysis مهندسی منابع آب |
| title | Dez Basin Flood Frequency Analysis |
| title_full | Dez Basin Flood Frequency Analysis |
| title_fullStr | Dez Basin Flood Frequency Analysis |
| title_full_unstemmed | Dez Basin Flood Frequency Analysis |
| title_short | Dez Basin Flood Frequency Analysis |
| title_sort | dez basin flood frequency analysis |
| url | https://wej.marvdasht.iau.ir/article_1669_eb68b2f026b5b01e1a250d0419e77acd.pdf |
| work_keys_str_mv | AT rr dezbasinfloodfrequencyanalysis AT hs dezbasinfloodfrequencyanalysis AT am dezbasinfloodfrequencyanalysis |