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035 _a.b10210660
099 9 _aAIT Thesis no. WA-85-20
100 0 _aSanit Piriyapongpun
245 1 0 _aDistribution function approach to watershed model
260 _aBangkok :
_bAsian Institute of Technology,
_c1984
300 _a61 p.
490 1 _aThesis ;
_vno. WA-85-20
500 _aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology
502 _aThesis (M.Eng.) - Asian Institute of Technology, 1984
520 _aLumped representation of distribution function approach is replaced by the spatial heterogeneity of the processes and parameters. The model parameters can be computed distributivity from basin geomorphology. This is the advantage to apply the developed model to ungauge watershed. Exponential, bivariate exponential and gamma distributions are studied and compared. The obtained results are fairly reasonable for Lam Chi Long and Huai Yang basins. There are small differences of values of parameters of three distribution functions which are acceptable. This may be due to the procedure to estimate storage depth are still under investigated and information of time distribution of daily rainfall is not known. Although the total volume of predicted discharge are less than observed ones, the shape of hydrograph can be predicted with fair accuracy of runoff with several peaks.
650 0 _aWatersheds
_xMathematical models
700 0 _aSuphat Vongvisessomjai,
_eChariperson
700 1 _aHoshi, Kiyoshi,
_eExaminaion Committee
700 1 _aYoganarasimhan, G. N.,
_eExamination Committee
700 1 _aHuynh, Ngoc Phien,
_eExamination Committee
710 2 _aThe Government of France,
_eScholarship Donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. WA-85-20
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B20148
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