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- Title
Research on Parameter Uncertainty Analysis of Xin'anjiang Model Based on GLUE Method.
- Authors
He, Bin; Feng, Jiaojiao; Wang, GuoLi; Liang, Guohua
- Abstract
The parameter optimization is a very complicated task because of many parameters and theirmutual constraints of the hydrological model of the basin. In order to solve the problemof large initial optimization of hydrological model parameters, long optimizationtime, lack of precision and prone to local optimization in optimization process, amulti-objective GLUE method is used to analyze the uncertainty of the sensitiveparameters of Xin ’ Anjiang model and determine the posterior distribution range of thesensitive parameters. On the basis of this, the parameters were optimized in theprior distribution and the posterior distribution of the model parameters under thesame conditions, taking the 12-field flood in Longwan River basin as the researchobject. The results show that, the result of using the posterior distribution range isbetter than that of the parameter selection range, which improves efficiency, and theoverall performance and prediction precision of the model prediction, and lays thefoundation for parameter identification and parameter transplant in the missing data area.
- Subjects
GLUE; UNCERTAINTY; WATERSHEDS; PROCESS optimization; PREDICTION models
- Publication
Geophysical Research Abstracts, 2019, Vol 21, p1
- ISSN
1029-7006
- Publication type
Article