000 02825nam a2200385 4500
005 20260817162313.0
008 041297 th eng
035 _a.b10080521
099 9 _aAIT Thesis no. 458
100 1 _aShirahatti, Prahalad Prabhu
245 1 0 _aAnalysis of 'black box' relationship between sediment discharge, rainfall and runoff
260 _aBangkok :
_bAsian Institute of Technology,
_c1972
300 _a118 p.
490 1 _aThesis ;
_vno. 458
500 _aA thesis submitted in partial fulfillment 0f the requirements of the degree of Master of Engineering of the Asian Institute of Technology, Bangkok Thailand.
502 _aThesis (M.Eng.) - Asian Institute of Technology, 1972
520 _aIn the present study an attempt was made to find a relationship between sediment discharge, rainfall and runoff. A 'Black Box' method of analysis was used. The relationship was assumed to be nonlinear and time variant. A decomposition model was devised which consisted of a linear filter combinations connected in series with a nonlinear filter. The data for the study was obtained from twelve plots in the evergreen forests of Northern Thailand. Two different models were compiled after testing eighteen different models. The memory of the system was processed by using linear low pass and Laguerre filter combination. The nonlinearity was accounted for by using second degree terms and cross product terms. The effect of number of linear and nonlinear filters on the model sensitivity and stability were also studied. Two models gave fairly good results. The use of more than one linear and nonlinear filters resulted in system instability and damping the sensitivity of the model. The nonlinearity was found to be overestimated by second degree term.
650 0 _aHydrology
700 0 _aSubin Pinkayan,
_eChairperson
710 2 _aBritish Government,
_eScholarship Donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. 458
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B24332
907 _a.b10080521
_bmnait
_cv
902 _a260610
998 _b3
_c951012
_dm
_ea
_fv
_g0
945 _lmnait
945 _lmnait
945 _lmnarc
942 _c20
942 _c40
909 _aBarcode : 30050003099263
_bCREATED : 1995-10-13
_cRECORD # : i10082116
_dLPATRON : 0
_eLCHKIN : -
_f# RENEWALS : 0
_g# OVERDUE : 0
_hIUSE3 : 0
_iTOT CHKOUT : 0
_jTOT RENEW : 0
909 _aBarcode : 30050003099289
_bCREATED : 1995-10-13
_cRECORD # : i10082128
_dLPATRON : 0
_eLCHKIN : -
_f# RENEWALS : 0
_g# OVERDUE : 0
_hIUSE3 : 0
_iTOT CHKOUT : 0
_jTOT RENEW : 0
909 _aBarcode : 30050160108030
_bCREATED : 2016-04-20
_cRECORD # : i12942558
_dLPATRON : 0
_eLCHKIN : -
_f# RENEWALS : 0
_g# OVERDUE : 0
_hIUSE3 : 0
_iTOT CHKOUT : 0
_jTOT RENEW : 0
999 _c4614
_d4614