02141nam a2200253   450000500170000000800410001703500150005810000260007324500920009926000520019130000100024349000270025350001440028050200580042452010400048265000230152265000270154570000350157270000520160770000460165971000580170581000590176385600650182220260817171100.0190598         th                  eng    a.b100236410 aSurasiti Intarapracha12aA basic approach to estimate sediment dispersion from offshore tin mining waste outfall  aBangkok :bAsian Institute of Technology,c1984  a49 p.1 aThesis ;vno. WA-85-13  aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology  aThesis (M.Eng.) - Asian Institute of Technology, 1984  aAt the present time, the disposal of waste material into sea regions or open channels is one of the most interesting problems which go to creating the adverse effect on the environment, especially for human beings. The mechanism of pollutant which transports, mixes and spreads into water is quite complicated. There are several factors which control and make the pollutant transport's behavior change. Among those, the most important one is diffusion process. The estimation of the diffusion coefficient proposed here is based on the theory of turbulent shear flow. To predict the distribution of sediment concentration from dredging spoil in the sea region, a finite difference method, namely the CRANK-NICOLSON scheme, which is transformed from the partial differential diffusion equation is used to predict its behavior. By using this knowledge, the suitable method for disposal of dredging spoil will be provided in the future, and the adverse effect of disposal of pollutant discharged into the sea is expected to be controlled.  0aSediment transport 0aDiffusion in hydrology0 aPrida Thimakorn, eChairperson0 aSuphat Vongvisessomjai, eExamination Committee1 aGupta, Ashim Das, eExamination Committee2 aThe Federal Republic of Germany, e Scholarship Donor2 aAsian Institute of Technology.tThesis ;vno. WA-85-13  3Full-Textuhttp://203.159.5.9/ait-thesis/detail.php?q=B20141