03279nam a2200433 4500 20260817162818.0 150598 th eng .b1008700x AIT Thesis no. WA-83-4 Jivajirajah, Thambirajah Applicability of some statistical distributions in hydrology Bangkok : Asian Institute of Technology, 1982 v, 73 p. Thesis ; no. WA-83-4 A thesis submitted in partial fulfillment of the requirement for the degree of Master of Engineering, school of Engineering and Technology Thesis (M.Eng.) - Asian Institute of Technology, 1982 Three statistical distributions namely log Pearson type- 3, Johnson's Sb and transformed gamma distributions-were considered in order to investigate their applicability to hydrology with regards to their flexibility and difficulties in estimating the parameters. Log Pearson type-3 distribution was applied t o annual streamflow, annual rainfall , annual flood peaks and annual maximum rainfall its parameters were estimated using seven different methods. Johnson' s Sb and transformed gamma distributions were applied to annual streamflow and Annual rainfall, since these are bounded on both sides. Two and four methods for parameters estimation were employed to transformed gamma and SB distributions respectively. It was found that the log Pearson type- 3 distribution using method of mixed moments for its parameter estimation is superior for the application in hydrology. However, care should be taken in using the log Pearson type-3 distribution in flood analysis, as it in most of the cases tends to have an upper bound. The transformed gamma distribution was found to be better than the Sb distribution in both annual streamflow and annual rainfall . Hydrology Statistical methods Huynh Ngoc Phien, Chairperson Hoshi, Kiyoshi, Examination Committee Suphat 'Vongvisessomjai, Examination Committee Royal Government of Netherlands, Scholarship Donor Asian Institute of Technology. Thesis ; no. WA-83-4 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B21405 .b1008700x mnait s 241004 2 951012 m a s 0 mnait mnait mnarc mnarc 20 40 Barcode : 30050003069886 CREATED : 1994-05-16 RECORD # : i10092195 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050003069894 CREATED : 1994-05-16 RECORD # : i10092201 LPATRON : 1014193 LCHKIN : 2000-07-24 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 2 TOT RENEW : 0 Barcode : 30050160036082 CREATED : 2016-05-02 RECORD # : i12877517 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050121098965 CREATED : 2023-12-10 RECORD # : i13469022 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 6394 6394 0 0 0 0 MAIN MAIN mnait 2026-08-17 10.00 0 AIT Thesis no. WA-83-4 30050003069886 2026-08-17 16:28:18 1 2026-08-17 20 0 0 0 0 MAIN MAIN mnait 2026-08-17 10.00 0 AIT Thesis no. WA-83-4 30050003069894 2026-08-17 16:28:18 2 2026-08-17 20 0 0 0 0 MAIN MAIN mnarc 2026-08-17 0 AIT Thesis no. WA-83-4 30050160036082 2026-08-17 16:28:18 2026-08-17 40 0 0 0 0 MAIN MAIN mnarc 2026-08-17 0 AIT Thesis no. WA-83-4 30050121098965 2026-08-17 16:28:18 3 2026-08-17 20