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 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : The Study of Flood Peak Analysis at Khlong Tha Taphao and Khlong Chumphon Basins by Hydrologic Model) ผู้เขียน: Wisuwat Taesombut,  ดร.วีระพล แต้สมบัติ, รองศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractKhlong Tha Taphao and Khlong Chumphon Basins are subbasins of Peninsula East Coast Basin. The catchment areas of these subbasins are 2,227 and 521 square kilometers, respectively. Chumphon city which is located in the downstream portion of these subbasins has always faced up with several flood problems each year because of heavy rains from both moonsoon and tropical storm. Two severe floods which caused serious disaster were Gay Typhoon Storm at the beginning of November, 1989 and Zita Tropical Storm at the end of August, 1997. Two hydrologic models namely NAM model developed by the Danish Hydraulic Institute (DHI), Denmark, and Hydrologic Flood model using Unit Hydrograph technique to calculate flood runoff from rainfall were used in this study. In calibration and verification of NAM model, the relevant data for the period 1998-2001 were evaluated. These two Hydrologic models were then applied for flood forecasting from Zita Tropical Storm occurred during 22-27 August, 1997 and Depression Storm occurred during 10- 15 March, 2001. The performance of these two hydrologic models was investigated by comparing the obtained results with observed data at stations X.46, X.64, X.158 and X.53A. It was found that both NAM and Hydrologic Flood models could be used for flood analysis in the studied subbasins with certain accuracy. Both models could be applied to estimate flood peak from storm rainfall to be used for making decision in flood management. However, NAM model is more reliable in determining flood estimation than using Hydrologic Flood model. |
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 Researcherนาย สุรชัย ลิปิวัฒนาการ, รองศาสตราจารย์ที่ทำงาน:ภาควิชาวิศวกรรมทรัพยากรน้ำ คณะวิศวกรรมศาสตร์ สาขาที่สนใจ:วิศวกรรมทรัพยากรน้ำ แบบจำลองโครงข่ายประสาทเทียม, Water Supply and Pipe Network System, Mathematical Model in Water Resources, Groundwater Resume |
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หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Hydrologic Models with Radar Precipitation Data Input) ผู้เขียน:Sudarat Compliew, Bancha Kwuanyuen สื่อสิ่งพิมพ์:pdf AbstractThis study is intended to assess performance of radar quantitative precipitation estimate (QPE) input from Doppler Meteorology radar with two hydrologic models. Principal interest is not only streamflow outputs accuracy but also time require to run model simulations. The latter is crucial to determine whether it is feasible to run the models in near-real-time for decision assistance to water management officials along Lower Chi and Lower Mun rivers. This study has been intended with a goal of accuracy assessing in near-real-time inflows from numerous sideflows of the Upper Chi and Upper Mun rivers. These inflows are problematic to reservoir operations in rare event of a heavy widespread rainfall into sideflow basins. The radar quantitative precipitation estimates (QPE) are obtained from WSR-8500S radar type of the Bureau of Royal Rainmaking and Agricultural Aviation at Pimai site, A.Pimai, Nakhon Ratchasima province in the Northeast of Thailand, which used a reflectivity-rain intensity (Z-R) ; Z=294R1.33 relationship tailored for the 10-14 August 2001 rain event. The results of hydrologic models performance with this QPE input found that both two hydrologic models, Vflo TM model and HEC-HMS model can give hydrographs output trend as similar to the hydrograph record, it indicated high performance of radar input. |
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