| Autor: |
R.H. McCuen, T.V. Hromadka |
| Rok vydání: |
1988 |
| Předmět: |
|
| Zdroj: |
Advances in Water Resources. 11:2-14 |
| ISSN: |
0309-1708 |
| DOI: |
10.1016/0309-1708(88)90016-4 |
| Popis: |
A lower bound for variance in surface runoff modelling estimates is advanced. The bound is derived using a linear unit hydrograph approach which utilizes a discretization of the catchment into an arbitrary number of subareas, a linear routing technique for channel flow effects, a variable effective rainfall distribution over the catchment, and calibration parameter distributions developed in correlating rainfall-runoff data by the model. The uncertainty bound reflects the dominating influence of the unknown rainfall distribution over the catchment and is expressed as a distribution function that can be reduced only by supplying additional rainfall-runoff data. It is recommended that this uncertainty distribution in modelling results be included in flood control design studies in order to incorporate a prescribed level of confidence in flood protection facilities. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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