03878nam a2200421 4500 20260817162956.0 170698 th eng .b10089317 AIT Thesis no. WA-93-8 Raut, Om Bahadur Application of the kriging technique in the design of an optimal rainfall network in the Karnali River Basin, Nepal Bangkok : Asian Institute of Technology, 1993 94 leaves : ill. Thesis ; no. WA-93-8 Thesis (M.Eng.) - Asian Institute of Technology, 1993 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering. Analysis of the hydrological data of the Karnali river basin, Nepal has been carried out by kriging. A theoretical outline of the geostatistical principles and the kriging system has been presented in a concise form. Based on the principles of kriging a methodology has been developed for selecting the best locations for a given number ofrain gauges planned to be added in a network with an objective to improve the reliability of the data. Use has been made of the software Geo-EAS for structure identification in the form of variogram analysis and for carrying out point and block kriging. The kriging technique has been utilized to interpolate precipitation depths at ungauged sites, to estimate the areal average of precipitation and most importantly for optimal network design. The results are compared with other interpolation methods in practice. Kriging, principally the 'best linear unbiased estimator' (BLUE) is found to be superior to other traditional approaches in the sense that kriging provides a quantitative measure of the accuracy of estimation in the form of 'kriging estimation variance' where as the other interpolation techniques involve subjective bias andfail to quantify the accuracy of estimation. It has been demonstrated that kriging can be of valuable use in identifying the optimal locations for a set of additional rain gauges using Kriging Standard Deviation as an indicator. The results obtained from kriging are realistic to the extent the stationarity assumptions are true. Therefore, if sufficient sample data points are available a large basin should be divided into smaller homoge.neous regions where the assumption of stationary mean can be considered valid. Difficulty involved in such a regionalization approach is delineation of the homogeneous zones and identification of the true structure due to lack of sufficient sample data points. Rain and rainfall Nepal Karnali River Basin Hjorth, Peder, Chairperson Liang, S., Examination committee Loof, Rainer, Examination Committee Takeuchi, K., Examination committee Royal Dutch Government, The Netherlands, Scholarship donor Asian Institute of Technology. Thesis ; no. WA-93-8 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B16378 .b10089317 mnait s 240411 2 951012 m a s 0 mnait mnait mnarc 20 40 Barcode : 30050003055703 CREATED : 1994-05-16 RECORD # : i10095482 LPATRON : 1019269 LCHKIN : 2007-12-13 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 2 TOT RENEW : 12 Barcode : 30050003351854 CREATED : 1994-05-16 RECORD # : i10095494 LPATRON : 1016166 LCHKIN : 2003-11-29 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 9 TOT RENEW : 15 Barcode : 30050160032982 CREATED : 2016-02-15 RECORD # : i12882951 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 6890 6890 0 0 0 0 MAIN MAIN mnait 2026-08-17 10.00 0 AIT Thesis no. WA-93-8 30050003055703 2026-08-17 16:29:56 1 2026-08-17 20 0 0 0 0 MAIN MAIN mnait 2026-08-17 10.00 0 AIT Thesis no. WA-93-8 30050003351854 2026-08-17 16:29:56 2 2026-08-17 20 0 0 0 0 MAIN MAIN mnarc 2026-08-17 0 AIT Thesis no. WA-93-8 30050160032982 2026-08-17 16:29:56 2026-08-17 40