| Author | Sivapalan, Murugesu |
| Call Number | AIT Thesis no. 940 |
| Subject(s) | Hydrologic models
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering of the Asian Institute of Technology, Bangkok, Thailand |
| Publisher | Asian Institute of Technology |
| Abstract | Many designs such as reservoir capacity estimation, flood and drought measures are usually based on synthetic streamflows. Synthetic streamflows require that the generating mechanism of the flows be known. This being generally unknown, an approximation procedure is usually adopted whereby a
generating mechanism is postulated with a set of driving parameters and these
parameter values are estimated from historic sequences. Thus the designs are subject to uncertainty in driving parameters estimated from the
historical data and also uncertainty in the type of model postulated. In this study, the variation of some designs with various parameters of some streamflow models is analyzed with the intention of assessing the impact of the ·above uncertainties on the designs. The designs used were storage by Sequent Peak Algorithm, flood storage, flow duration curves and flow frequency curves. They were calculated with monthly flows generated by each of three models, namely, Markov, ARIMA and FFGN. Storage by SPA is found directly proportional to the persistence parameters at all levels of development. But storage for low levels of
development decreases with increasing skew. The storage is a stochastic quantity and its variance is found to decrease for increasing parameter e of ARIMA. On the other hand, flow duration curves and flow frequency curves were found to be insensitive to any of the parameters considered. |
| Year | 1977 |
| Type | Thesis |
| School | Student Research Before 1979 |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Thesis (Year <=1979) |
| Chairperson(s) | Selvalingam, Selvadore
|
| Examination Committee(s) | Arbhabhirama Anat ;Suphat Vongvisessomjai
|
| Scholarship Donor(s) | KEIDANREN, Japan |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1977 |