02619nam a2200229   450000500170000000800410001703500150005810000230007324500600009626000520015630000100020849000220021850001640024050200580040450016680046265000150213070000350214570000390218070000510221981000540227085600650232420260817162258.0070198         th                  eng    a.b100800411 aChi, John Wen-yung10aAnalysis and synthesis of the Mekong River monthly flow  aBangkok :bAsian Institute of Technology,c1975  a95 p.1 aThesis ;vno. 737  aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering of the Asian Institute of Technology, Bangkok, Thailand .  aThesis (M.Eng.) - Asian Institute of Technology, 1975  aThe purpose of this study is to analyze the streamflow record of the Mekong River· and to establish an adequate data.-generation model for the  synthesis of monthly flow time series. The streainflow data at Vientiane station on the Meko.ng River was chosen for this purpose.· The historical record was assumed trend free and power spectrum analysis was applied to detect the significant periods of the streainflow time series. Since there is no more than one year periodicity of significance, the monthly flows in each calendar month were assumed to be independently distributed following three types of probability distribution. Three data-generation models were  constructed based on this assumption, which neglected serial correlations between consecutive monthly flows. The generated monthly flow series were investigated using the capacity requirements as criteria. The Thomas-Fiering  generation model, which incorporated serial correlation between consecutive monthly flows, was also used for comparison purpose, The result showed that for water supply purpose, for most practical  range of assumed water demands, the normal distribution model and Thomas-Fiering  model gave more consistent result with the historical record than the other two models. For flood control purpose, for practical range of assumed flood  cut levels, the three probabilistic models gave more consistent results with the historical record than the Thomas-Fiering model. The inadequacy of using  capacity requirements as criteria for assessing the generated streamflow series, was shown in this study to be due to the somewhat similar results  obtained for the different models, 0aHydraulics1 aOkamoto, Masami, eChairperson1 aNir, Zeev, eExamination Committee0 aSuphat Vongvisessomja, eExamination Committee2 aAsian Institute of Technology.tThesis ;vno. 737  3Full-Textuhttp://203.159.5.9/ait-thesis/detail.php?q=B23991