03101nam a2200421 4500 20260818093959.0 170698 th eng .b10209505 AIT Thesis no. WA-93-11 Luong Thi Duy Hieu Dispersion coefficient for unsteady salinity intrusion in estuaries Bangkok : Asian Institute of Technology, 1993 135 leaves : ill. Thesis ; no. WA-93-11 Thesis (M.Eng.) - Asian Institute of Technology, 1993 A thesis submitted in partial fulfillment ofthe requirements for the Degree ofMaster of Engineering. In the past dispersion coefficient in the Mekong estuarine system has been firstly assumed to be constant and later on expressed as a function of existing salinity and its gradient along the estuary. In this study some hydrodynamic characteristics are investigated and found to be additional factors describingdispersion coefficient. In the otherword, the salinity gradientplays the mostimportant role in the mixing process between sea and river water; it has the main effect on the behavior of the dispersion coefficient. Turbulence which characterized by velocity is also involved in the dispersion process. Itis found from this study thatdispersion coefficientin Mekongestuarine system can beexpressed as a function in space and in time of parameters such as: salinity concentration, salinity concentration gradient, hydraulic radius, flow velocity. From the computational results, the variation of dispersion coefficient along every branch in the Mekong estuarine system is also specified. That is a very convenienttool forthe estimation ofdispersioncoefficientwhen solving the Advective-Dispersion equation to predict the salinity intrusion in the Mekong estuarine system. Saltwater encroachment Suphat Vongvisessomjai, Chairperson Gupta, Ashim Das, Examination Committee Tanaka, Hitoshi, Examination committee Sutat Weesakul, Examination committee The Government of Denmark, Scholarship donor Asian Institute of Technology. Thesis ; no. WA-93-11 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B16381 .b10209505 mnait s 240329 2 951012 m a s 0 mnait mnait mnarc 20 40 Barcode : 30050003055752 CREATED : 1994-05-16 RECORD # : i10253257 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 1 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050120325633 CREATED : 1994-05-16 RECORD # : i10253269 LPATRON : 1026204 LCHKIN : 2017-03-28 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 1 TOT CHKOUT : 13 TOT RENEW : 1 Barcode : 30050160032941 CREATED : 2016-02-15 RECORD # : i12882987 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 30905 30905 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. WA-93-11 30050003055752 2026-08-18 09:39:59 1 2026-08-18 20 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. WA-93-11 30050120325633 2026-08-18 09:39:59 2 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no. WA-93-11 30050160032941 2026-08-18 09:39:59 2026-08-18 40