| Author | Mah, Youn Chin |
| Call Number | AIT SSPR no. CA-82-13 |
| Subject(s) | Hydrological forecasting
|
| Note | A special study submitted in partial fulfillment of the requirements for the degree of Master of Science, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Abstract | Daily river streamflows at one station (Vientiane) along the Mekong River are studied using a historical approach to obtain a long range flood forecast, with the objective of over-coming short-term hydrological uncertainty and the narrow limitations in time of process- based models. Only daily discharge data are used in the present approach . Sixty
years of data are considered as one continuous time series; a suitable linear filter is applied to separate short period variations due to rain storms from the main hydrograph . Cross-correlation coefficients between all years are computed and arranged in the upper triangle of a matrix. This matrix is then used to identify the groupings of years of closest correlation or 'fit' to each other. Given the first few months of a year, the group
which best fits a current flood season can be identified by used cross-correlation coefficients . It is proposed to use the average filtered hydrograph of that groups to forecast the future of the on-going season. Apart from the mean curve, the short period residues, filtered from the original curves, are analyzed statistically . The frequencies and return periods of these residue heights are used for short term forecasting. |
| Year | 1982 |
| Type | Special Study Project Report (SSPR) |
| School | School of Engineering and Technology |
| Department | Department of Information and Communications Technologies (DICT) |
| Academic Program/FoS | Computer Application (CA) |
| Chairperson(s) | Radok, Rainer |
| Examination Committee(s) | Huynh, Ngoc Phien ; Le Huu Ti
|
| Scholarship Donor(s) | The Government of Australia |
| Degree | Special Studies Project Report (M. Sc.) - Asian Institute of Technology, 1982 |